Data Sheet

ADAS3023

Pin No.

Mnemonic

Type1

Description

27

DVDD

P

Digital 5 V Supply. Decouple the DVDD supply to DGND using a 10 μF capacitor and 0.1 μF local

capacitor.

28

AVDD

P

Analog 5 V Supply. Decouple the AVDD supply to AGND using a 10 μF capacitor and 0.1 μF local

capacitor.

31

RCAP

P

Internal 2.5 V Analog Regulator Output. RCAP supplies power to the internal reference. Decouple this

internally regulated output (RCAP) using a 10 μF capacitor and a 0.1 μF local capacitor.

32

REFIN

Internal 2.5 V Band Gap Reference Output, Reference Buffer Input, or Reference Power-Down Input.

REF1 and REF2 must be tied together externally. See the Voltage Reference Input/Output section for

more information.

33, 34

REF1, REF2

AI/O

Reference Input/Output. Regardless of the reference method, REF1 and REF2 need individual

decoupling using external 10 μF ceramic capacitors connected as close to REF1, REF2, and REFN as

possible. See the Voltage Reference Input/Output section for more information.

35

RGND

P

Reference Supply Ground. Connect RGND to the system analog ground plane.

36, 37

REFN

P

Reference Input/Output Ground. Connect the 10 μF capacitors that are on REF1 and REF2 to the REFN

pins, then connect the REFN pins to the system analog ground plane.

38

VSSH

P

High Voltage Analog Negative Supply. Nominally, the supply of VSSH is −15 V. Decouple VSSH using a

10 μF capacitor and a 0.1 μF local capacitor. Connect the exposed pad to VSSH.

39

VDDH

P

High Voltage Analog Positive Supply. Nominally, the supply of VDDH is 15 V. Decouple VDDH using a

10 μF capacitor and a 0.1 μF local capacitor.

EP

N/A

Exposed Pad. Connect the exposed pad to VSSH.

1

AI = analog input, AI/O = analog input/output, DI = digital input, DO = digital output, P = power, and N/A means not applicable.

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