Digital Potentiometers (POTs) | CAT5172

Digital Potentiometer (POT), 256-Tap, SPI Compatible

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Overview

The CAT5172 is a 256-position linear taper digital POT ideally suited for replacing mechanical potentiometers and variable resistors. Like mechanical potentiometers, the CAT5172 has a resistive element, which can span VCC to Ground or float anywhere between the power supply rails.

Wiper settings are controlled through an SPI-compatible digital interface. Upon power-up, the wiper assumes a mid-span position and may be repositioned anytime after the power is stable.

The CAT5172 operates from 2.7 V to 5.5 V, while consuming less than 2 µA. This low operating current, combined with a small package footprint, makes the CAT5172 ideal for battery powered portable appliance.

  • Potentiometer Replacement
  • Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors
  • RF Amplifier Biasing
  • Gain Control and Offset Adjustment
  • Industrial Equipment
  • 256-position
  • End-to-End Resistance: 50 kΩ, 100 kΩ
  • SPI Compatible Interface
  • Power-on Preset to Midscale
  • Single Supply 2.7 V to 5.5 V
  • Low Temperature Coefficient 100 ppm/°C
  • Low Power, IDD 2 µA max
  • Wide Operating Temperature -40°C to +85°C

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MSL Type

MSL Temp (°C)

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# of Pots

# of Taps

Type

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Resistance Typ (kΩ)

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Wiper Position Memory

VDD Max (V)

Pricing ($/Unit)

CAT5172TBI-50GT3

Last Shipments

CAD Model

Pb

A

H

P

SOT-23-8

527AK

1

260

REEL

3000

N

1

256

Potentiometer

SPI

50

VCC

No

5.5

Price N/A

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