2.3. Power domain separation and ESD protection

The epc901 chip has internally 5 different power domains and 3 ground references which are interconnected with ESD protection diodes.

All pins are also equipped with ESD protection diodes. Figure 5 shows this functional circuit. The diodes have a breakthrough voltage of

0.3V. The designer has to take care that none of these diodes become conductive either at power-up, power-down or normal operation.

© 2016 ESPROS Photonics Corporation

Characteristics subject to change without notice

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Datasheet_epc901-V5.6

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Figure 5: ESD protection diode circuit

DGND

AGND

GND_OA

VIDEO_P

VIDEO_N

VIDEO_CM

I_BIAS

ANA_TEST_0

ANA_TEST_1

TEST_MODE

all others

epc 901

analog pins

digital pins