Overview

The ISL90842 integrates four digitally controlled potentiometers (DCP) configured as variable resistors on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2C bus interface. Each potentiometer has an associated Wiper Register (WR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. The DCPs can be used as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.

ISL90842 Functional Diagram
ISL90842 Functional Diagram
  • Four variable resistors in one package
  • 256 resistor taps - 0.4% resolution
  • I2C serial interface
  • Wiper resistance: 70Ω typical @ 3.3V
  • Standby current <5µA max
  • Power supply: 2.7V to 5.5V
  • 50kΩ, 10kΩ total resistance
  • 14 Lead TSSOP
  • Pb-free plus anneal available (RoHS compliant)

Documentation

Design & Development

Software Downloads
Type Title Date
Library
DCP Evaluation Board Software v6.03
EXE 2.56 MB
1 item

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    ISL90842UIV1427Z
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    Samples Available
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    		TSSOP Tube 2 3.32 Get Samples,
    ISL90842UIV1427Z-TK
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    Samples Available
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    		TSSOP Reel 2 2.475 Get Samples,
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