VFAT readout electronics
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A VFAT board from CERN is evaluated for use as a readout board to convert the GEM output analog signal to a digital signal.
Ribbon cable pinouts
# | Name | Value | Test rig color Primary/Second |
B1 | DGND | Digital Ground | Black/Grey (shared) |
A1 | DVDD | +2.5V | Red/Grey (shared) |
B2 | SDA | I2C Data | Green/Yellow |
A2 | SCL | I2C Clock | Yellow/Green |
B3 | DGND | Digital Ground | Black/Grey (shared) |
A3 | DVDD | +2.5V | Red/Grey (shared) |
B4 | |||
A4 | |||
B5 | I2C ADDR 2 | I2C Address Most | White/Blue |
A5 | I2C ADDR 1 | I2C Address Middle | White/Orange |
B6 | I2C ADDR 0 | I2C Address Least | White/Green |
A6 | REH-S | Soft Reset (Program saved) | White/Grey |
B7 | |||
A7 | REH-B | Hard Reset | Grey/White |
.............. | |||
---|---|---|---|
B22 | DGND | Digital Ground?? | |
A22 | SCAN E | ||
B23 | AGND | Analog Ground | |
A23 | AVDD | 2.5V | Grey/Red |
B24 | AGND | Analog Ground | |
A24 | AVDD | 2.5V | Grey/Red |
B25 | AGNDD | Analog Ground?? | Grey/Black |
A25 | AVDD | 2.5V | Grey/Red |
The PC board-mount socket for the cable is ERNI 154765 for reel or ERNI 063197 for tube packaging.
The cable crimp-ons are ERNI 024403 or premade cables 300mm long are ERNI 173795