The ISL22102IR20Z-EVAL evaluation board is used to evaluate the ISL22102 32-tap, push-button, dual audio logarithmic potentiometer with buffer amplifiers and audio detection (XDCP™).

The ISL22102 integrates two digitally controlled potentiometers (DCP) with buffered wiper outputs and an internal bias voltage generator (VB) on a monolithic CMOS integrated circuit. The wiper position is adjusted by the user through simple Up and Down push buttons, ideal for stereo volume control in audio applications.

Each potentiometer is implemented using 31 polysilicon resistors in a logarithmic array. Between each of the resistors are tap points connected to the wiper terminal through switches. When powered up, the wipers are reset to the -20dB position.

Features

  • Dual audio control – Two 32-tap log pots
  • Buffered wiper outputs
  • Audio detection with threshold input and controlled delay
  • Zero amplitude wiper switching (ZAWS)
  • Simple push-button interface
  • Auto increment/decrement after 1s button press
  • Standby mode
  • Mute function
  • Total resistance: 18.5kΩ each DCP (Typical)
  • Voltage operation
    • VCC = 2.7V to 5.5V
    • AVCC = 2.7V to 5.5V
  • Temp Range = -40 °C to +85 °C
  • Pb-free (RoHS compliant)

Applications

  • Set-top boxes
  • Stereo amplifiers
  • DVD players
  • Portable audio products

Product Options

Part Number Part Status Buy Sample
ISL22102IR20Z-EVAL
Active
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL22102 Datasheet Datasheet PDF 624 KB
Application Notes & White Papers
AN1699: Digital Control Potentiometers Offer Hidden Benefits for Many Designs Application Note PDF 251 KB
AN1701: Dual Audio Potentiometers Deliver Power Savings for Consumer Audio Devices Application Note PDF 381 KB
AN9675: A Tutorial in Coherent and Windowed Sampling with A/D Converters Application Note PDF 503 KB
AN9705: A Theoretical View of Coherent Sampling Application Note PDF 287 KB
Downloads
XDCP Evaluation Board Kit Documentation and Software Design File ZIP 21.07 MB
Other
DCP Evaluation Board Software v6.03 Library EXE 2.56 MB