SPI INTERFACE

WIPER

REGISTER

HA

LA

WA

VDD

GND

SCLK

DIN

CS

H

L

W

H

L

W

VOLTAGE DIVIDER MODE

RHEOSTAT MODE A

RHEOSTAT MODE B

Where D = Decimal Value of Wiper Code

Where D = Decimal Value of Wiper Code

Where D = Decimal Value of Wiper Code

H (Floating)

L

W

H

L (Floating)

W

OR

OR

W

TPL0501

SLIS136A

– SEPTEMBER 2011 – REVISED SEPTEMBER 2011

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

FUNCTIONAL BLOCK DIAGRAM

DIGITAL POTENTIOMETER CONFIGURATIONS

Figure 1. DPOT Configurations

2

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