Texas Instruments OPT3004EVM, Руководство пользователя

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Schematic, PCB Layout, and Bill of Materials
15 SBOU220 – December 2018
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Copyright © 2018, Texas Instruments Incorporated
OPT3004EVM User's Guide
4 Schematic, PCB Layout, and Bill of Materials
4.1 Schematic
Figure 21 shows the complete schematic of the OPT3004 test board. SDA and SCK are pulled up by the
SM-USB-DIG Platform so there are no pull-up resistors present. R2 is a pull-up resistor for the interrupt
signal. C1 is a bypass capacitor for VDUT, and R4 is a jumper to tie the address pin to ground. If another
address is desired, remove R4 and install a wire to the pad or via, and then to the appropriate signal
source.
Figure 21. OPT3004 Test-Board Schematic
The OPT3004 is mounted on the back side of the board so that the LED light from the SM-USB-DIG is
directed away from the device. Also, no additional LEDs are installed on the test board to reduce total
ambient light around the device. The back side of the board is mostly planar; mounting holes are included
to accommodate evaluation.