+30 V/±15 V Operation

128-Position Digital Potentiometer

AD7376

FEATURES

128 positions

10 kΩ, 50 kΩ, 100 kΩ

20 V to 30 V single-supply operation

±10 V to ±15 V dual-supply operation

3-wire SPI®-compatible serial interface

THD 0.006% typical

Programmable preset

Power shutdown: less than 1 µA

i

CMOS™ process technology

APPLICATIONS

High voltage DAC

Programmable power supply

Programmable gain and offset adjustment

Programmable filters, delays

Actuator control

Audio volume control

Mechanical potentiometer replacement

FUNCTIONAL BLOCK DIAGRAM

A

W

B

SDI

CLK

CS

SDO

7

7

R

7-BIT

LATCH

7-BIT

SERIAL

REGISTER

Q

D

CK

AD7376

SHDN

SHDN

RS

GND

Figure 1.

GENERAL DESCRIPTION

The AD73761 is one of the few high voltage, high performance

digital potentiometers2 on the market. This device can be used

as a programmable resistor or resistor divider. The AD7376

performs the same electronic adjustment function as mechanical

potentiometers, variable resistors, and trimmers with enhanced

resolution, solid-state reliability, and programmability. With

digital rather than manual control, the AD7376 provides layout

flexibility and allows closed-loop dynamic controllability.

The AD7376 features sleep-mode programmability in shutdown

that can be used to program the preset before device activation,

thus providing an alternative to costly EEPROM solutions.

The AD7376 is available in 14-lead TSSOP and 16-lead wide

body SOIC packages in 10 kΩ, 50 kΩ, and 100 kΩ options. All

parts are guaranteed to operate over the −40°C to +85°C

extended industrial temperature range.

1

Patent number: 54952455.

2

The terms digital potentiometer and RDAC are used interchangeably.

Rev. D

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