PMB-16 Layout Details ----------------------------- Original Rev. 9-FEB-2006 Current Rev. 12-DEC-2006 This file contains a technical description of the 16 Channel Preamp Motherboard. This is basically a set of notes that collected during the design of the PMB-16 circuit board. This file is divided into the following sections: PMB-16 Description Functions and Purpose Standard Orientation and Board Size Net Lists Power, Bias Voltage, and Test Pulse Connectors Output Signal Connectors Board Layers Ground Plane and Power Plane Layer Names Net Names Mentor Layer Usage Board Stackup Trace Routing Generation of the Area Fills Generation of the Gerber Data and Hand Editing Generation of Drill Data Parts List PMB-16 Description Functions and Purpose ---------------------------------------- The intent of the PMB-16 is to provide a low cost low noise flexible front-end for a DAQ system for LArTPC test at Fermilab. The PMB-16 has the following features: - It holds 16 of the D-Zero Run II Dual FET Liquid Argon Calorimeter Pre-Amplifiers. - It provides flexible analog filtering of the output of the D-Zero PreAmps. This filtering is implemented with fully differential operational amplifiers. Two complex conjugate pole pairs plus a number of real poles are available for setting the frequency response characteristics. A voltage gain of between 15 and 25 is easy to achieve in the filter section that follows the PreAmps. - The differential analog output from the PMB-16 is isolated from the ground structure of the low level signal section of the card and is available on connectors that provide for direct connection to the ADF-2 cards (where the signals are digitized and stored in circular buffers). - Detector wire Bias Voltage filtering and distribution is provided on the PMB-16 card. The final filtering of the Bias Voltage is designed to reduce the excess noise form this source as much as possible. Up to +-500 Volts of Bias Voltage may be handled on the PMB-16 card. - Test signal distribution of provided on the PMB-16. The 16 channels are divided into two groups with separate test signal distribution networks so that cross talk between wires in the detector may be studied. The test signal distribution networks are designed to introduce the least possible amount of excess noise from this source. - Filtering and distribution of the low Voltage power supplies for the Pre-Amplifiers and PostAmp-Filters is provided on the PMB-16. PMB-16 Standard Orientation and Board Size ------------------------------------------- The standard orientation for looking at and describing the PMB-16 circuit board will be with its Bias Voltage input on the left and its analog output to the ADF-2 cards on the right. Channel #15 is at the top and channel #0 is at the bottom. The size of the PMB-16 board is 240mm in X and 230mm in Y. The 0,0 origin of the card is in its lower left hand corner. 240, 230 / ____________________________________________________________ | | | Test Pulse Output | | Input "B" Ch #15 Connector | | ... Ch 8:15 | | Ch #8 | | Bias | Bias | Volt Coupling PostAmps Output | Volt | & Test Capacitors PreAmps & Filters Connector | Input | Pulse Ch 0:15 | | Dist. | | Ch #7 | | ... Output | | Test Pulse Ch #0 Connector | | Input "A" Ch 0:7 | |____________________________________________________________| / 0,0 PMB-16 Net Lists ----------------- The net list for the PMB-16 will be maintained in 6 files: Per-Channel PreAmp (template using migt.py) This covers the Bias Voltage to detector wire resistor through to the input to the PostAmp-Filter. Per-Channel PostAmp-Filter (template using migt.py) This covers the PostAmp-Filter input through to the output series rc connecting to the output connector. Bias Voltage and Test Pulse Network This covers the Bias Voltage and Test Pulse input connectors up to the 10 meg Ohm per channel Bias Voltage resistors. PreAmp DC Low Voltage Supply, Filtering and Bypass Capacitors This covers the DC Low Voltage power supply input connectors (4 of them) through to connecting these supplies to their routing plane nets. It also covers all of the Bypass Capacitors at the PreAmp sockets. PostAmp-Filter DC Low Voltage Supply, Filtering and Bypass Capacitors This covers the DC Low Voltage power supply input connectors (2 of them) through to connecting these supplies to their routing plane nets. It also covers all of the Bypass Capacitors on the PostAmp-Filter power supply nets. Output Connectors This covers the 3 output connector. These net list files are kept in .../PMB-16/Work/Netlists/. The overall net list file for the PMB-16 is built using a script file which is also located in .../PMB-16/Work/Netlists/. There are separate script files in that directory to move the netlist file into the Mentor area and give it a Mentor version number and a script file to generate a "sorted netlist", i.e. sorted by the number of connections the net has a alphabetically. PMB-16 Power, Bias Voltage, and Test Pulse Connectors ------------------------------------------------------ The following connectors are headers with 0.025" square pins on a 0.1" grid. The pinout of these connectors is symmetric and designed so that an offset of 1 will not cause damaging power supply connections. Bias Voltage Input Connector +---+---+---+---+---+ 1 GROUND | 3 | | 2 | | 1 | 2 Bias Voltage Input +- 500 Volts +---+---+---+---+---+ 3 Ground Test Pulse Input Connector +---+---+---+ 1 GROUND | 3 | 2 | 1 | 2 Test Pulse 50 Ohm Input Termination +---+---+---+ 2.0 femto Coulombs per Volt-usec 3 Ground PreAmp Power Connector 1 DRV_VCC 7 GROUND +---+---+---+---+---+---+ 2 DRV_VEE 8 GROUND | 11| 9 | 7 | 5 | 3 | 1 | 3 DRV_VCC 9 FET_VEE +---+---+---+---+---+---+ 4 DRV_VEE 10 FET_VCC | 12| 10| 8 | 6 | 4 | 2 | 5 GROUND 11 FET_VEE +---+---+---+---+---+---+ 6 GROUND 12 FET_VCC The VCC supplies are +8 Volts and the VEE supplies are -6 Volts. PostAmp-Filter Power Connector 1 FLTR_VCC 7 GROUND +---+---+---+---+---+---+ 2 FLTR_VEE 8 GROUND | 11| 9 | 7 | 5 | 3 | 1 | 3 FLTR_VCC 9 FLTR_VEE +---+---+---+---+---+---+ 4 FLTR_VEE 10 FLTR_VCC | 12| 10| 8 | 6 | 4 | 2 | 5 GROUND 11 FLTR_VEE +---+---+---+---+---+---+ 6 GROUND 12 FLTR_VCC The VCC supplies are +5 Volts and the VEE supplies are -6 Volts. PMB-16 Output Connectors and Channel Mapping to the ADF-2 ------------------------------------------------------------ The output connectors are 36 pin 3M MDR type right angle connector. The output connectors on the PMB-16 card carry the analog signals from the PMB-16 to the ATC card and thus into the ADF-2 card which contains the ADCs and circular buffer memories. Note that there are 3 output connectors on the PMB-16. The intent is to allow operation using either all 32 channels on the ADF-2 card, in which case each channel will have a 1024 location long circular buffer memory, or to use just 16 channels on the ADF-2 card, in which case each channel will have a 2048 location long circular buffer memory. The setup for operation using all 32 channels on the ADF-2 card is clear. For operation using just 16 channels on each ADF-2 card, the channels used must be spread across both of the FPGA's, and thus you will still need to use both Pleated Foil cable input connectors on the ATC card. The channels on the ADF-2 card are numbered 0:15 EM & HD. In the internals of the ADF-2 card these channels appear in the following order: 0 EM, 0 HD, 1 EM, 1 HD, ... 30 EM, 30 HD, 31 EM, 31 HD. For operation using just 16 channels on each ADF-2 card we will use just the EM channels. The 3 Output Connectors on the PMB-16 card are: J1701 Connects PMB-16 Chs 0:7 to ADF-2 Chs 0,4,8,12,1,5,9,13 EM or to Chs 2,6,10,14,3,7,11,15 EM J1702 Connects PMB-16 Chs 0:15 to ADF-2 Chs 0,4,8,12,1,5,9,13 EM & HD or to Chs 2,6,10,14,3,7,11,15 EM & HD J1703 Connects PMB-16 Chs 8:15 to ADF-2 Chs 0,4,8,12,1,5,9,13 EM or to Chs 2,6,10,14,3,7,11,15 EM The Mentor Geometry for this 3M MDR connector will have its pin numbering setup to match the "Fermi standard" (which is not the 3M system) so that this numbering will match that on the ATC card schematics. 3M MDR Connector Pin Numbering (Fermi system) Circuit Board Foot Print Top Side of the Circuit Board | 36 18 | 35 17 | |\ 34 16 | | \ 33 15 | | \ 32 14 | | | 31 13 | | | 30 12 | | | The narrow side 29 11 | | | of the "D" is 28 10 | | | down against the 27 9 | | | top surface of 26 8 | | | the circuit board. 25 7 | | | 24 6 | | | 23 5 | | | 22 4 | | / 21 3 | | / 20 2 | |/ 19 1 | | | PCB Edge --->| PMB-16 Output Connectors Pin Connections PMB-16 Out_Conn_0 Out_Conn_1 Out_Conn_2 Channel Pin Numbers Pin Numbers Pin Numbers Number Dir Cmp Dir Cmp Dir Cmp ------- ----------- ----------- ----------- 0 17 35 17 35 N.C. 1 15 33 16 34 N.C. 2 13 31 15 33 N.C. 3 11 29 14 32 N.C. 4 9 27 13 31 N.C. 5 7 25 12 30 N.C. 6 5 23 11 29 N.C. 7 3 21 10 28 N.C. 8 N.C. 9 27 17 35 9 N.C. 8 26 15 33 10 N.C. 7 25 13 31 11 N.C. 6 24 11 29 12 N.C. 5 23 9 27 13 N.C. 4 22 7 25 14 N.C. 3 21 5 23 15 N.C. 2 20 3 21 Pins: 1, 18, 19, 36 and the connector shell are all GROUND. Reception of the analog signals on the ADF-2 Card PFC Connector Pin Numbers -------------------------- ADF-2 EM HD ADF-2 Relative Pin Numbers Pin Numbers Channel Number Eta, Phi Dir Cmp Dir Cmp -------------- -------------- ----------- ----------- 0 or 2 0,0 or 0,2 17 35 16 34 4 or 6 1,0 or 1,2 15 33 14 32 8 or 10 2,0 or 2,2 13 31 12 30 12 or 14 3,0 or 3,2 11 29 10 28 1 or 3 0,1 or 0,3 9 27 8 26 5 or 7 1,1 or 1,3 7 25 6 24 9 or 11 2,1 or 2,3 5 23 4 22 13 or 15 3,1 or 3,3 3 21 2 20 Pins: 1, 18, 19, 36 and the connector shell are all GROUND. In summary there are the following 6 ways to plug the PMB-16 into the ADF-2: Plug J1701 into Plug J1701 into the Upper ATC Connector the Lower ATC Connector PMB-16 Channel ADF-2 Channel PMB-16 Channel ADF-2 Channel -------------- ------------- -------------- ------------- 0 0 EM 0 2 EM 1 4 EM 1 6 EM 2 8 EM 2 10 EM 3 12 EM 3 14 EM 4 1 EM 4 3 EM 5 5 EM 5 7 EM 6 9 EM 6 11 EM 7 13 EM 7 15 EM Plug J1702 into Plug J1702 into the Upper ATC Connector the Lower ATC Connector PMB-16 Channel ADF-2 Channel PMB-16 Channel ADF-2 Channel -------------- ------------- -------------- ------------- 0 0 EM 0 2 EM 1 0 HD 1 2 HD 2 4 EM 2 6 EM 3 4 HD 3 6 HD 4 8 EM 4 10 EM 5 8 HD 5 10 HD 6 12 EM 6 14 EM 7 12 HD 7 14 HD 8 1 EM 8 3 EM 9 1 HD 9 3 HD 10 5 EM 10 7 EM 11 5 HD 11 7 HD 12 9 EM 12 11 EM 13 9 HD 13 11 HD 14 13 EM 14 15 EM 15 13 HD 15 15 HD Plug J1703 into Plug J1703 into the Upper ATC Connector the Lower ATC Connector PMB-16 Channel ADF-2 Channel PMB-16 Channel ADF-2 Channel -------------- ------------- -------------- ------------- 8 0 EM 8 2 EM 9 4 EM 9 6 EM 10 8 EM 10 10 EM 11 12 EM 11 14 EM 12 1 EM 12 3 EM 13 5 EM 13 7 EM 14 9 EM 14 11 EM 15 13 EM 15 15 EM As a final example of the channel numbering look at the situation when you connect two PMB-16 cards (via their J1702 16 channel output connectors) to the Upper and Lower connectors on an ATC to ADF-2 card: PMB-16 Card #0 System Channels 0:15 plugs into the Upper ATC Connector PMB-16 Card #1 System Channels 16:31 Plugs into the Lower ATC Connector System PMB-16 PMB-16 ADF-2 ADF-2 Data Channel Card Channel Channel Path FPGA ------- ------ ------- ------- ---------- 0 0 0 0 EM 0 1 0 1 0 HD 0 2 0 2 4 EM 0 3 0 3 4 HD 0 4 0 4 8 EM 1 5 0 5 8 HD 1 6 0 6 12 EM 1 7 0 7 12 HD 1 8 0 8 1 EM 0 9 0 9 1 HD 0 10 0 10 5 EM 0 11 0 11 5 HD 0 12 0 12 9 EM 1 13 0 13 9 HD 1 14 0 14 13 EM 1 15 0 15 13 HD 1 16 1 0 2 EM 0 17 1 1 2 HD 0 18 1 2 6 EM 0 19 1 3 6 HD 0 20 1 4 10 EM 1 21 1 5 10 HD 1 22 1 6 14 EM 1 23 1 7 14 HD 1 24 1 8 3 EM 0 25 1 9 3 HD 0 26 1 10 7 EM 0 27 1 11 7 HD 0 28 1 12 11 EM 1 29 1 13 11 HD 1 30 1 14 15 EM 1 31 1 15 15 HD 1 PMB-16 Board Layers -------------------- The PMB-16 is a 4 layer card. In different setions of the card the layers are used in different ways. The crossection through the card is shown below for 4 different sections of the card. Bias Voltage Output & Test Pulse PreAmp PreAmp PostAmp to ADF-2 Stack Distribution Input Driver Filter Connector Layer Network Section Section Section Section ----- ------------- ------- ------- ----------- --------- 1 Traces & Pads Trc&Pad Trc&Pad Trc&Pad Trc&Pad Top Perimeter Gnd PreAmp Socket and Diff Amps Output DC Bulk Filters & RC comps Connector 2 open Ground Ground Ground Ground 3 open FET Vcc&Vee DRV Vee&Vcc FLTR Vcc&Vee open 4 Ground under <--------------------------------> Trc&Pad Bot all of this Traces and Pads burried in section Ground Plane as required PMB-16 Ground Plane and Power Plane Layer Names Net Names ---------------------------------------------------------- The PMB-16 has 6 different Power Planes that will be implemented on just 2 layers in the Stackup. As is the custom, each of these power planes will be handled as a separate layer in the Mentor Graphics design. These layers are concatenated when the Gerber data is generated. Power Plane Power Plane Nominal Mentor Plane Function Net Name Design Voltage Logical Layer ------------------ ----------- -------------- ------------- Ground GROUND - POWER_1 PreAmp Input Vcc FET_VCC +8 Volts POWER_2 PreAmp Input Vee FET_VEE -6 POWER_3 PreAmp Driver Vcc DRV_VCC +8 POWER_4 PreAmp Driver Vee DRV_VEE -6 POWER_5 PostAmp-Filter Vcc FLTR_VCC +5 POWER_6 PostAmp-Filter Vee FLTR_VEE -6 POWER_7 All 6 Power Planes are implemented on one pcb layer. All 6 planes are plotted at once as "negative data". On a separate Mentor layer (DAM_1) there are cut lines drawn between the planes and keep outs drawn under the Bias Voltage and Output connector sections. Ground and Power Plane Implementation ------------------------------------- The Ground Plane is implemented on three layers of the stackup: - Layer #1 (Top) This is a normal "positive" Mentor signal layer. It has a perimeter of Ground all around it. This perimeter of ground is done as an area fill. - Layer #2 Is a complete normal ground plane except under the Bias Voltage section. It is implemented as a normal Mentor ground plane. It is plotted as "negative data" i.e. plot something where we do NOT want copper. The "lines" to keep the copper out of the Bias Voltage section are on a separate Mentor Layer (DAM_2) that will be plotted at the same time. There is a line splitting (disconnecting) this ground plane under the Output Connectors from the rest of the card. - Layer #3 This is the set of 6 power planes. This is normal negative Mentor plane data. Lines to separate the various planes and to keep these planes out from under the Bias Voltage and Output Connector sections are on the Mentor DAM_1 layer. - Layer #4 (Bottom) Is is normal positive Mentor signal layer with ground fill in in all sections. Specifically this is the only ground plane in the Bias Voltage section and it needs to be very well connected to the Layer #2 ground plane, e.g. riveted under the coupling capacitors. In addition there are ground plane pads on both the Top and Bottom layers for all of the board support mounting holes along the front (input signal) edge of the card. Note that the Ground connections to the shell of the output connectors and to the 4 ground pins in the output connectors are isolated from the pcb ground planes. The shell of the output connectors and to the 4 ground pins in the output connectors are connected to the Preamp shield box by a separate wire. PMB-16 Mentor Layer Usage -------------------------- The assignment of Mentor Physical Layers to Mentor Logical Layers is: Mentor Physical Mentor Plane Layer Logical Layer Net Name -------- ------------- ---------- 1 SIGNAL_1 2 POWER_1 GROUND 3 POWER_2 FET_VCC 4 POWER_3 FET_VEE 5 POWER_4 DRV_VCC 6 POWER_5 DRV_VEE 7 POWER_6 FLTR_VCC 8 POWER_7 FLTR_VEE 9 SIGNAL_2 PMB-16 Board Stackup --------------------- Stackup Layer Layer Type Content on this Layer ------------- -------------- --------------------- PCB Layer #1 Trace Layer #1 SIGNAL_1 and PAD_1 PCB Layer #2 Plane Layer #2 POWER_1 net GROUND PCB Layer #3 Plane Layer #3 POWER_2 net FET_VCC POWER_3 net FET_VEE POWER_4 net DRV_VCC POWER_5 net DRV_VEE POWER_6 net FLTR_VCC POWER_7 net FLTR_VEE PCB Layer #4 Trace Layer #4 SIGNAL_2 and PAD_2 Ceramic and Tantalum Bypass Capacitors -------------------------------------- Each Preamp socket will have 4 ceramic bypass capacitors, one for each of the 4 preamp power supplies. These will be placed on the bottom of of the pcb, close to the power supply pins on the socket that they server. They can (or should) use the same via as is used to supply the socket pin. Their ground via should not share with a socket pin ground via (and can burry into the bottom side ground plane. There are two Tantalum caps per preamp socket. They alternate servicing the 4 preamp power supplies. They should will use pairs of vias to the power and ground planes. The Filter bypass caps are setup the same as those for the preamps. The only components on the bottom of the PMB-16 are the ceramic and Tantalum bypass capacitors. PMB-16 Trace Routing --------------------- Trace widths that will be used: All HV (Bias Voltage) traces: 1.2 mm use 1mm1 land via Test Pulse Input Section traces: 1.0 mm use 1mm1 land via Preamp Connector Power 1.0 mm use 1mm1 land via and Ground traces: via center 0.8mm from pad Preamp Input and Output 0.4 mm signal traces: 0603 Ceramic Bypass Capacitor 0.8 mm 0.4mm min pad to via land Power and Ground traces: 0.7 mm trace on diff amps B Case Tantalum Bypass Capacitor Power and Ground traces: 1.2 mm Diff Amp Thermal Pad traces: 0.8 mm use 0mm65 land via via center 0.7mm from edge thermo pad Ground Power traces to Diff Amp 0.35 mm use 0mm65 land via via center 0.75mm from end of pad Analog Routing traces: 0.30 mm Output Signal Routing Section: 0.30 mm traces with 0.30 mm gap use 0mm65 land via via center 0.7mm minimum from the center of the nearest trace Output Connector: within the output connector itself use 0.25 mm trace where dual track routing to escape the connector pins Power Connector traces: 1.70 mm use 1mm1 land via PCB Design Rule Summary ----------------------- What they What is in will Build this Design --------------- ---------------- Minimum Finished Hole Diameter: 10 mil 0.25 mm 12 mil 0.30 mm Narrowest annular ring: 7 mil 0.18 mm 7 mil 0.175 mm Narrowest trace width: 8 mil 0.20 mm 10 mil 0.25 mm Narrowest trace to bla space: 8 mil 0.20 mm 10 mil 0.25 mm Inner layer minimum distance from edge of hole to unconnected copper: 15 mil 0.38 mm Vias and Terminals used in Routing Signals and Power ----------------------------------------------------- Standard Small Routing Via: name: via_mm65 Drill Hole size (finished): 12 mil 0.30 mm Land diameter: 26 mil 0.65 mm --> ring width 7 mil 0.175 mm Plane to via relief: 43 mil 1.10 mm --> plane isolation Air Gap 9 mil 0.225 mm Tented via, no opening in the Solder_Mask. Power and Ground Larger Via: name: via_1mm1 Drill Hole size (finished): 24 mil 0.60 mm Land diameter: 43 mil 1.10 mm --> ring width 10 mil 0.25 mm Plane to via relief: 61 mil 1.55 mm --> plane isolation Air Gap 9 mil 0.225 mm Tented via, no opening in the Solder_Mask. Terminal used on the one pin via component: component name: wrap_1mm1 Padstack name: TERM_0_6_MM Drill Hole size (finished): 24 mil 0.60 mm Land diameter: 43 mil 1.10 mm --> ring width 10 mil 0.25 mm Plane to via relief: 65 mil 1.65 mm --> plane isolation Air Gap 11 mil 0.275 mm Solder Mask Opening diameter: 43 mil 1.10 mm Terminal used on the 0.1" x 0.1" 25 mil square pin headers e.g. SAM2x6 The hole diameter must fit the diagonal of the 25 mil pins, i.e. a 35 mil diagonal. hole diameter 1.00 mm 39.4 mils pad land diameter 1.64 mm 64.6 mils ==> ring width 0.32 mm 12.6 mils plane relief 2.24 mm 88.2 mils ==> air gap 0.30 mm 11.8 mils With the 1.64 mm pad land diameter you can route a 0.30 mm trace that has 0.30 mm spaces on each side. DRILL_SIZE 1.00 mm PAD 1.64 mm SOLDER_MASK 1.64 mm POWER 2.24 mm Terminals used on the "High Voltage" connectors SAM1x2 and SAM1x5 GROUND High_Voltage --------- -------------- DRILL_SIZE 1.00 mm 1.00 mm PAD 1.64 1.90 SOLDER_MASK 1.64 1.90 POWER 2.24 10.00 High Voltage aspects of the pad design The 1.64 mm pad on the GND pin and the 1.90 mm pad on the HV pin are spaced 5.08 mm and thus approach each other to 3.31 mm i.e. a High Voltage clearance of 3.31 mm. The 1.90 mm HV pad has a 10.00 mm power relief. This gives an High Voltage Air Gap of 4.05 mm. Terminals used on the 27mm by 6mm 0.01 uFd "High Voltage" Capacitor GROUND High_Voltage --------- -------------- DRILL_SIZE 1.00 mm 1.00 mm PAD 3.00 3.00 SOLDER_MASK 3.00 3.00 POWER 3.80 11.00 High Voltage aspects of the pad design The 3.00 mm HV pad has a 11.00 mm power relief. This gives a High Voltage Air Gap of 4.00 mm. The 3.00 mm GND pad has a 3.80mm power relief. This gives an Air Gap of 0.40 mm. Terminals used on the 43mm by 22mm 0.33 uFd "High Voltage" Capacitor GROUND High_Voltage --------- -------------- DRILL_SIZE 1.30 mm 1.30 mm PAD 5.00 5.00 SOLDER_MASK 5.00 5.00 POWER 5.80 15.00 High Voltage aspects of the pad design The 5.00 mm HV pad has a 15.00 mm power relief. This gives a High Voltage Air Gap of 5.00 mm. The 5.00 mm GND pad has a 5.80mm power relief. This gives an Air Gap of 0.40 mm. Terminals used on the 36 pin 3M output connectors This connector has 4 columns of pins. There are 9 pins in each column. The columns are 75 mils apart. Within a column the pins are 100 mils apart. The required pin holes are 28 mils +- 4 mils. The closest approach of pins is not within a column but rather between adjacent pins in adjacent columns. They are about 90.1 mils apart, i.e. sqrt (75 sqrd + 50 sqrd). We need a one track route between adjacent pins in adjacent columns and two track route between adjacent pins in the back most column. The two track route will be the hardest. 100 - 28 is 72 mils to be divided between 2 rings, 3 spaces, and 2 traces. 72 mils divided by 7 is about 10.28 mils or about 0.26 mm. Pad Details and expected Clearances hole diameter 0.70 mm 27.6 mils pad land diameter 1.20 mm 47.2 mils ==> ring width 0.25 mm 9.8 mils plane relief 1.90 mm 74.8 mils ==> air gap 0.35 mm 13.8 mils With the 1.20 mm pad land diameter you can route two 0.25 mm traces between adjacent pins in a column and have a 0.25 mm space between the pads and the traces and between the two traces. In addition there is 0.11 mm of slop which is used to go from the English connector to the metric grid. With a plane relief of 1.90 mm you get a 0.35 mm Air Gap between a pad and the plane while still getting 0.39 mm of connectivity between adjacent pins in adjacent columents to the interior parts of the plane. Summary: DRILL_SIZE 0.70 mm PAD 1.20 mm SOLDER_MASK 1.20 mm POWER 1.90 mm Generation of the Area Fills in LAYOUT: ----------------------------------------- First recall the Mentor Net Type Rules: Default Net Type Pin Via Trace Fill ----- ----- ----- ----- Pin 0.5 - - - Via 0.25 0.35 - - Trace 0.26 0.25 0.25 - Fill 1.0 1.0 1.0 0.25 Bias Volt Net Type Pin Via Trace Fill ----- ----- ----- ----- Pin 0.5 - - - Via 0.25 0.35 - - Trace 0.25 0.25 0.25 - Fill 4.0 1.0 1.0 0.25 Setup the Area Fill clearances from the: Setup Routing --> Setup Net Type Rules menue. For the Default_Net_Type we can pick something like a 1.0 mm clearance between Fill and Pin or Via or Trace and for the Bias_Voltage nets we can use a 4.0 mm clearance between the pins with that net and the fill. Pull Down Setup Routing --> Setup Area Fill Pad Isolation : Polygon Tolerance = 0.025 mm Manufacture Aperature: 0.50 mm Slot Threshold: try 1.1 mm Solid Fill, NO Keep Islands, YES Allow Merge Do Not ignore area fill to via clearance for the same net Do Not ignore area fill to pin clearance for the same net Thernal: Pins, Via's and Pads use thermal ties all setup the same Prefer 4 ties, Minimum 3 ties, prefer 45/135 degree Tie_Bar_Width 0.5 mm then to generate the Area Fill If a special version of the PCB Geometry is needed for the Area Fill generation use Librarian to restore it. Pull Down Setup --> Shape Edit Mode ON Select the shape from the Shape Edit layer Right Click --> Change Shape to Fill: Area Fill ? vs Power Fill ? This is an Area Fill because it is on a trace layer and not on a power plane layer. Select Layer = Signal_1 or Signal_2 Select Net = GROUND Keep all Area Fill defaults NO delete the original shape typical warning: Area Fill is fractured into "N" pieces. Deletion of the Area Fill from FabLink: ----------------------------------------- Select the Area Fill on its Signal_ layer Area Fill Panel Menu --> Delete vertexes Generation of the Gerber Data from FabLink: -------------------------------------------- Assume that the Gerber Format has been setup and saved. Gerber Data is in mm 3.2 format. If necessary use: Right Click --> Artwork --> Change Artwork Format Image Scale: 1 Units: mm Mode: Absolute Plot Offsets: Manual with X=0.0 Y=0.0 G_Code: Allow Zero Suppression: None Interpolation: Linear with 8 Segments Output Format: 3 Significant and 2 decimal Data Record Length: 80 Header String: none Sub-Header String: none Trailer String: none Machine Stop Code: M02 XY-Modal: not checked Open Shutter Modal: not checked View Artwork Format: not checked Command Block End Character: * Aperature Table: Right Click --> Artwork --> Change Aperature Table --> Delete All Apertures Right Click --> Artwork --> Change Aperature Table --> Fill Aperature Table Select the Apertures for ALL Aizes Select NO ReSize and NO ReScale Flash Complex Padstacks: not checked Replace the table Report the Aperture Table (from Report Pull Down Menu) Include the ArtWork Format: yes Save and Display the Report Save Report to Design with standard filename Replace the existing Report May/Will need to Edit the Power Apertures: After the Aperture Table is filled it is necessary to edit the 5 Power Apertures (aka thermal reliefs) to get the desired layout. To edit a Power Aperture Right Click --> Artwork --> Change Aperture Table --> Change Power Aperture For each Power Aperture select the Aperture Position and then set the: Tie Width, Air Gap, and Rotation and then click OK. Note that the outer diameter of each Power Aperture is driven by its "power plane relief" diameter in its Geometry. We must set the Air Gap to get the desired pad size and set the Tie Width to get the desired amount of Copper connection. This version of Mentor lets us control the Tie Rotation. Currently the Power Apertures are at Aperture Positions: Desired for PMB-16 Outer ---------------------- D- Relief Tie Air Position Code Diameter Width Gap Rotate Function -------- ---- --------- ----- ----- ------ ---------- 27 127 1.55 0.25 0.225 45 via_1mm1 29 129 1.10 0.25 0.225 45 via_mm65 31 131 5.80 0.5 0.4 45 big caps 32 132 1.65 0.25 0.275 45 wrap_1mm1 34 134 2.24 0.35 0.3 45 samtec 38 138 1.90 0.35 0.35 45 3M Conn From the 28-AUG-2006 Aperture Table Report Position Shape Type Diameter Power Dcode -------- ------ ----- -------- ----- ----- 27 circle flash 1.55 true 127 29 circle flash 1.10 true 129 31 circle flash 5.80 true 131 32 circle flash 1.65 true 132 34 circle flash 2.24 true 134 38 circle flash 1.90 true 138 Gerber Data Generation: Right Click --> Artwork --> Creat Artwork Data Gerber Data is Gerber 274X format Stroke the Area Fill, Flash the Polygon ASCII Data, for the BOARD, ALL ArtWork Numbers (1:11) NO Tear Drops, REMOVE Unused Pins, REMOVE Unused Via's NO Output UnPlated Holes NO ReSize, NO ReScale Right Click --> Artwork --> Creat Artwork Data All settings are the same except create Gerber Data for just ArtWork Numbers 1 and 4 i.e. the top and bottom pcb layers, but use the option Output ALL Pins, Output ALL Via's Gerber Data Viewing: Right Click --> Artwork --> Simulate Artwork Data Hand Editing of the Final PMB-16 Gerber Data -------------------------------------------- Hand Edits of the Gerber Files 1. Need to disconnect some power connector pins from the places where they come through the Layer #3 Power Plane. To do this edit the Layer #3 file, i.e. Art_3 and add a flash of the Plane Relief aperture DCode 136 (aperture position 36) in the locations shown below. Note that in the un-edited version of the Art_3 files these 6 locations are receiving a thermo tie connect flash of DCode 134 (aperture position 34). What we need to do is to add a flash of the Plane Relief aperture at these 6 locations. Specifically to the list of locations that receive the Plane Relief flash DCode 136 add the following 6 locations: "X20581Y22073D03*X20835Y22073D03*X13481Y22327D03*X13735Y22327D03* X12465Y22073D03*X12719Y22073D03*". The D136 flash list starts at about line number 453. Search for "D136". - The Layer #3 file for the Power Planes needs to be edited to cover up (i.e. disconnect) the PostAmp-Filter Power connector pins 2 and 4 from the Power Planes. at about X = 205.8 mm Y = 220.7 mm at about X = 208.4 Y = 220.7 - The Layer #3 file for the Power Planes needs to be edited to cover up (i.e. disconnect) the Pre-Amplifier Power connector pins 1 and 3 from the Power Planes. These are the two DRV_VCC power connector pins. at about X = 134.8 mm Y = 223.3 mm at about X = 137.4 Y = 223.3 - The Layer #3 file for the Power Planes needs to be edited to cover up (i.e. disconnect) the Pre-Amplifier Power connector pins 10 and 12 from the Power Planes. These are the two FET_VCC power connector pins. at about X = 124.6 mm Y = 220.7 mm at about X = 127.2 Y = 220.7 2. The (simple) way that I know of to connect the floating sections of the Layer #3 power planes to ground it to, by hand, remove the plane relief flash from a couple of the wrap_1mm1 components in the lower right hand corner that are used to rivet together the Ground planes. Specifically: In the Art_3 the Power Planes file remove the flash of DCode 140 (Aperture Position 40) from the following 3 locations: X = 180.0 mm Y = 9.0 mm X = 195.0 Y = 9.0 X = 210.0 Y = 9.0 To find this section of the file search for, "D140". It will be at about line number 461. Remove the section, "X18000Y00900D03*X19500Y00900D03*X21000Y00900D03*". Generation of the Drill Data from FabLink: ------------------------------------------- Assume that the Drill Format has been setup and saved. Drill Data is in mm 3.2 format. Drill Table: Right Click --> Drill --> Change Drill Table --> Delete All Drills Right Click --> Drill --> Change Drill Table --> Fill Drill Table Select Replace the Drill Table Right Click --> Drill --> Creat Drill Data Excellon, Board, ASCII, Drill Hole Type: Both Output Hole Types: ALL, NO Mirror. Report the Drill Table (from Report Pull Down Menu) Include the Drill Format Save and Display the Report Save Report to Design with standard filename Replace the existing Report PMB-16 Parts List ------------------ Connectors 3M 36 pin MDR type right angle connector Qty/Card = 3 3M Part No. 10236-55G3VC Distributor: Newark Stock No. 52F7590 price about $4.43 ea PMB-16 Project Part No. Conn_36 Reference Designators: J1701, J1702, J1703 Output Connectors Milli-Grid 2x15 30 pin 2mm metric smd socket Qty/Card = 16 Molex Part No. 79109-1014 Distributor: Digi-Key Part No. WM18708-ND price $3.40 ea PMB-16 Project Part No. Connector_Pamp Reference Designators: 16_times_inc_by_100 PAMP1 Pre-Amplifier Hybrid Socket Samtek Header Posts 1x2 Qty/Card = 16 Samtek Part No. Distributor: price about $ PMB-16 Project Part No. Sam1x2 Reference Designators: Detector Wire Signal Connectors J1, J101, J201, J301, J401, J501, J601, J701, J801, J101, J1001, J1101, J1201, J1301, J1401, J1501 Samtek Header Posts 1x3 Qty/Card = 2 Samtek Part No. Distributor: price about $ PMB-16 Project Part No. Sam1x3 Reference Designators: J2002, J2003 Test Pulse Connectors Samtek Header Posts 1x5 Qty/Card = 1 Samtek Part No. Distributor: price about $ PMB-16 Project Part No. Sam1x5 Reference Designators: J2001 Bias Voltage Connector Samtek Header Posts 2x6 Qty/Card = 2 Samtek Part No. Distributor: price about $ PMB-16 Project Part No. Sam2x6 Reference Designators: J1801, J1851 Power Supply Connectors Aluminum Electrolytic Capacitors: 470 uFd 16 Volt Electrolytic Capacitor SMD mount Qty/Card = 6 Panasonic Part No. EEV-FK1C471P Distributor: Digikey 500 per reel $0.75 each PMB-16 Project Part No. Cap_470_uFd_Alum Reference Designators: C1801:C1804, C1851, C1852 Transient Voltage Suppressor: Transient Voltage Suppressor 6.0 Volt SMD mount Qty/Card = 4 OnSemi Part No. 1SMA6.0AT3 Distributor: Newark price $0.50 ea PMB-16 Project Part No. Diode_1SMA6 Reference Designators: D1802, D1803, D1851, D1852 Transient Voltage Suppressor 8.0 Volt SMD mount Qty/Card = 2 OnSemi Part No. 1SMA8.0AT3 Distributor: Newark price $0.50 ea PMB-16 Project Part No. Diode_1SMA8 Reference Designators: D1801, D1804 Tantalum Chip Capacitors: 10 uFd 16 Volt Tantalum Capacitor SMD mount Case Size B Qty/Card = 64 Kemet Part No. T491B106K016AS Distributor: Newark price about $0.30 ea PMB-16 Project Part No. Cap_10_uFd_Tant Reference Designators: C14, C214, C414, C614, C814, C1014, C1214, C1414 C15, C215, C415, C615, C815, C1015, C1215, C1415 C16, C216, C416, C616, C816, C1016, C1216, C1416 C17, C217, C417, C617, C817, C1017, C1217, C1417 C1861:C1876, C1881:C1896 Ceramic Chip Capacitors: 220 pFd 50 Volt 5% Case Size 0805 NP0 dielectric Qty/Card = 32 Panasonic Part No. ECJ-2VC1H221J Distributor: Digikey Part No. PCC221CGTR-ND 5,000 per reel price about $70 per reel PMB-16 Project Part No. Cap_220_pFd Reference Designators: 16_times_inc_by_100 C25 AB 1500 pFd 50 Volt 5% Case Size 0805 X7R dielectric Qty/Card = 16 Panasonic Part No. ECJ-2VB1H152K Distributor: Digikey Part No. PCC152BNTR-ND 5,000 per reel price about $80 per reel PMB-16 Project Part No. Cap_1.5_nFd Reference Designators: 16_times_inc_by_100 C22 4700 pFd 50 Volt 10% Case Size 0805 X7R dielectric Qty/Card = 32 Panasonic Part No. ECJ-2VB1H472K Distributor: Digikey Part No. PCC472BNTR-ND 5,000 per reel price about $55 per reel PMB-16 Project Part No. Cap_4.7_nFd Reference Designators: 16_times_inc_by_100 C34 AB 10000 pFd 50 Volt 10% Case Size 0805 X7R dielectric Qty/Card = 32 Panasonic Part No. ECJ-2VB1H103K Distributor: Digikey Part No. PCC103BNTR-ND 5,000 per reel price about $80 per reel PMB-16 Project Part No. Cap_10_nFd Reference Designators: 16_times_inc_by_100 C34 AB 22000 pFd 50 Volt 10% Case Size 0805 X7R dielectric Qty/Card = 64 Panasonic Part No. ECJ-2VB1H223K Distributor: Digikey Part No. PCC223BGTR-ND 5,000 per reel price about $55 per reel PMB-16 Project Part No. Cap_22_nFd Reference Designators: 16_times_inc_by_100 C31, C33 AB 47000 pFd 25 Volt 10% Case Size 0805 X7R dielectric Qty/Card = 64 Panasonic Part No. ECJ-2VB1E473K Distributor: Digikey Part No. PCC1820TR-ND 4,000 per reel price about $72 per reel PMB-16 Project Part No. Cap_47_nFd Reference Designators: 16_times_inc_by_100 C31, C33 AB 0.1 uFd 16 Volt 10% Case Size 0603 X7R dielectric Qty/Card = 128 Kemet Part No. C0603C104K4RAC Distributor: Newark 4,000 per reel price about $72 per reel PMB-16 Project Part No. Cap_100_nFd Reference Designators: 16_times_inc_by_100 C10:C13 16_times_inc_by_100 C41:C44 Power Supply Bypass Capacitors 0.15 uFd 16 Volt 10% Case Size 0805 X7R dielectric Qty/Card = 32 Panasonic Part No. ECJ-2VB1C154K Distributor: Digikey Part No. PCC1814TR-ND 4,000 per reel price about $100 per reel PMB-16 Project Part No. Cap_0.15_uFd Reference Designators: 16_times_inc_by_100 C20 AB 0.47 uFd 25 Volt 10% Case Size 0805 X7R dielectric Qty/Card = 32 Kemet Part No. C0805C474K3RAC Distributor: Newark 2,500 per reel price about $250 per reel PMB-16 Project Part No. Cap_470_nFd Reference Designators: 16_times_inc_by_100 C36A, C36B Output Coupling Capacitors Polypropylene Film Capacitors: 0.01 uFd 1600 Volt 10% Case Size 26.5 x 15 x 6 LHT mm Qty/Card = 18 Illinois Capacitor Part No. 103PPB162K Distributor: Newark price about $0.73 ea PMB-16 Project Part No. Cap_10_nFd_Film Reference Designators: 16_times_inc_by_100 C1 Wire Signals Coupling C2005, C2006 Test Pulse Coupling Caps 0.33 uFd 1600 Volt 10% Case Size 42.5 x 30 x 23 LHT mm Qty/Card = 4 Illinois Capacitor Part No. 334PPB162K Distributor: Newark price about $4.28 ea PMB-16 Project Part No. Cap_330_nFd_Film Reference Designators: C2001:C2004 Bias Voltage Filter Network Chip Resistors: Zero-Ohm Jumpers size 0805 RC26 AB Qty/Card = 32 20.0 Ohm 1% Tolerance Case Size 1206 Chip Resistor Qty/Card = 4 Panasonic Part No. ERJ-8ENF20R0V Distributor: Digikey Digikey Part No. P20.0FTR-ND 5,000 per reel price about $68 per reel PMB-16 Project Part No. Res_20R0_Ohm Reference Designators: R2009:R2012 Test Pulse Input Termination 40.2 Ohm 1% Tolerance Case Size 1206 Chip Resistor Qty/Card = 2 Panasonic Part No. ERJ-8ENF40R2V Distributor: Digikey Digikey Part No. P40.2FTR-ND 5,000 per reel price about $68 per reel PMB-16 Project Part No. Res_40R2_Ohm Reference Designators: R2007, R2008 Test Pulse Input Termination 78.7 Ohm 1% Tolerance Case Size 0603 Chip Resistor Qty/Card = 32 Panasonic Part No. ERJ-3EKF78R7V Distributor: Digikey Digikey Part No. P78.7HTR-ND 5,000 per reel price about $37 per reel PMB-16 Project Part No. Res_78.7_Ohm Reference Designators: 16_times_inc_by_100 R37A, R37B Output Back Termination Resistors 221 Ohm 1% Tolerance Case Size 0805 Chip Resistor Qty/Card = 32 Panasonic Part No. ERJ-6ENF2210V Distributor: Digikey Digikey Part No. P221CTR-ND 5,000 per reel price about $36 per reel PMB-16 Project Part No. Res_221_Ohm Reference Designators: 16_times_inc_by_100 R21 432 Ohm 1% Tolerance Case Size 0805 Chip Resistor Qty/Card = 16 Panasonic Part No. ERJ-6ENF4320V Distributor: Digikey Digikey Part No. P432CTR-ND 5,000 per reel price about $36 per reel PMB-16 Project Part No. Res_432_Ohm Reference Designators: 16_times_inc_by_100 R32 576 Ohm 1% Tolerance Case Size 0805 Chip Resistor Qty/Card = 32 Panasonic Part No. ERJ-6ENF5760V Distributor: Digikey Digikey Part No. P576CTR-ND 5,000 per reel price about $36 per reel PMB-16 Project Part No. Res_576_Ohm Reference Designators: 16_times_inc_by_100 R23 1.00 K Ohm 1% Tolerance Case Size 1206 Chip Resistor Qty/Card = 2 Panasonic Part No. ERJ-8ENF1001V Distributor: Digikey Digikey Part No. P1.00KFTR-ND 5,000 per reel price about $68 per reel PMB-16 Project Part No. Res_1k_Ohm Reference Designators: R2005, R2006 Bias Voltage Network 1.69k Ohm 1% Tolerance Case Size 0805 Chip Resistor Qty/Card = 32 Panasonic Part No. ERJ-6ENF1691V Distributor: Digikey Digikey Part No. P1.69KCTR-ND 5,000 per reel price about $36 per reel PMB-16 Project Part No. Res_1.69k_Ohm Reference Designators: 16_times_inc_by_100 R24 2.49k Ohm 1% Tolerance Case Size 0805 Chip Resistor Qty/Card = 32 Panasonic Part No. ERJ-6ENF2491V Distributor: Digikey Digikey Part No. P2.49KCTR-ND 5,000 per reel price about $36 per reel PMB-16 Project Part No. Res_2.49k_Ohm Reference Designators: 16_times_inc_by_100 R35 3.01 K Ohm 1% Tolerance Case Size 1206 Chip Resistor Qty/Card = 6 Panasonic Part No. ERJ-8ENF3011V Distributor: Digikey Digikey Part No. P3.01KFTR-ND 5,000 per reel price about $68 per reel PMB-16 Project Part No. Res_3.01k_Ohm Reference Designators: R2013A:R2013C, R2014A:R2014C Test Pulse Net 200 K Ohm 1% Tolerance Case Size 1206 Chip Resistor Qty/Card = 15 Panasonic Part No. ERJ-8ENF2003V Distributor: Digikey Digikey Part No. P200KFTR-ND 5,000 per reel price about $68 per reel PMB-16 Project Part No. Res_200k_Ohm Reference Designators: R2002A:R2002E, R2003A:R2003E, R2004A:R2004E Bias Voltage Filter Network 22.0 Meg Ohm 10% Tolerance Case Size 1206 Chip Resistor Qty/Card = 85 Panasonic Part No. ERJ-8GEY226V Distributor: Digikey Digikey Part No. P22METR-ND 5,000 per reel price about $43 per reel PMB-16 Project Part No. Res_22_meg_Ohm Reference Designators: 16_times_inc_by_100 R1A:R1E Wire Bias Voltage R2001A:R2001E Bias Voltage Input Bleeder ---> Try to find 20 Meg in Metal Film in 1206 Integrated Circuits: Differentail Amplifier Qty/Card = 32 Texas Instruments Part No. THS4141CDGN Distributors: Newark, Digikey, Avnet or Arrow price about $3.40 ea PMB-16 Project Part No. IC_THS4141 Reference Designators: 16_times_inc_by_100 U21 Filter 16_times_inc_by_100 U31 Differential OpAmp ======================================================================== Parts that are no longer in the design: 1000 pFd 50 Volt 10% Case Size 0805 X7R dielectric Qty/Card = 32 Panasonic Part No. ECJ-2VB1H102K Distributor: Digikey Part No. PCC102BNTR-ND 5,000 per reel price about $80 per reel PMB-16 Project Part No. Cap_1_nFd Reference Designators: 16_times_inc_by_100 C34 AB