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CAT5191: Digital Potentiometer (POT), 256-Tap, I2C Compatible, Extended Temperature Range

Datasheet: Digital Potentiometer (POT), 256-Tap, I2C Compatible
Rev. 0 (130kB)
Product Overview
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The CAT5191 is a 256-position linear taper digital POT ideally suited for replacing mechanical potentiometers and variable resistors.

The wiper settings are controlled through an I2C-compatible digital interface. Upon power-up, the wiper assumes a midscale position and may be repositioned anytime after the power is stable. The device can be programmed to reset the wiper position to midscale or to go to a shutdown state during operation. An address input pin, AD0, allows the connection of two devices onto the same I2C bus.

The CAT5191 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 CAT5191 ideal for battery-powered portable applications.

The CAT5191 is designed as a pin for pin replacement for the AD5245 and operates over the -40°C to +85°C industrial temperature range.
Features
 
  • 256-position
  • End-to-End Resistance: 50 kΩ
  • I2C 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
  • Extended Operating Temperature -40°C to +125°C
Applications   End Products
  • Potentiometer Replacement
  • Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors
  • RF Amplifier Biasing
  • Gain Control and Offset Adjustment
 
  • Industrial Equipment
Technical Documentation & Design Resources
Tutorials (1) Package Drawings (1)
Data Sheets (1)  
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
CAT5191TBE-50GT3 Active
Pb-free
Halide free
CAT5191 SOT-23-8 527AK 1 260 Tape and Reel 3000 $0.6133
Market Leadtime (weeks) : 4 to 8

Product
Description
Pricing ($/Unit)
Compliance
Status
# of Pots
# of Taps
Type
Control Interface
Resistance Typ (kΩ)
VH Max (V)
Wiper Position Memory
VDD Max (V)
Package Type
CAT5191TBE-50GT3  
 $0.6133 
Pb
H
 Active   
1
256
Potentiometer
I2C
50
VCC
No
5.5
SOT-23-8
Case Outlines
527AK   
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