MAX9892

PRODUCTION

Shunt Mode Audio Click-and-Pop Eliminator

Industry's Newest IC Eliminates Clicks and Pops for Headphone and Line Output in a Small Footprint

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • Distortion-Free, Click-and-Pop Elimination
  • Less than 1µA Supply Current
  • 1.7V to 3.6V Single-Supply Operation
  • Tiny Packages
    • 6-Bump UCSP (1mm x 1.52mm x 0.6mm)
    • 6-Pin µDFN (2mm x 2mm x 0.75mm)

The MAX9892 is an audio click-and-pop eliminator for portable multimedia devices. Operating from a 1.7V to 3.6V supply, the MAX9892 connects to the output of the existing system amplifier and provides a low-impedance path to ground during startup and shutdown. The inputs INL and INR accept voltage swings from VDD to 5.5V below VDD. See the Setting the Supply Voltage section in the full data sheet for more information. The power-up and power-down transients are shunted to ground to prevent clicks and pops from becoming audible.

The MAX9892 features two low-impedance analog switches controlled by active-low MUTE that opens and closes the switches. The switches are open during normal operation and have no impact on the output signal. During startup and shutdown of the amplifier, the MAX9892 can be activated to short the outputs to ground and prevent clicks and pops from pulling current through the headphones.

The MAX9892 is available in 6-bump UCSP™ (1mm x 1.52mm x 0.6mm) and 6-pin µDFN (2mm x 2mm x 0.75mm) packages. The MAX9892 is specified over the -40°C to +85°C temperature range.

Applications

  • Mobile Internet Devices
  • Mobile Phones
  • Notebook Computers
  • Portable Gaming Consoles
  • Portable Media Players
  • Smart Phones
MAX9892
Shunt Mode Audio Click-and-Pop Eliminator
MAX9892: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

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Software Resources

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Evaluation Kits

MAX9892EVKIT

Evaluation Kit for the MAX9892

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Features and Benefits

  • 2.7V to 5.5V DC Single-Supply Operation (On-Board Headphone Amplifier)
  • 1.7V to 5.5V DC Single-Supply Operation (External Headphone Amplifier)
  • Proven Audio PCB Layout
  • On-Board MAX4338 Headphone Amplifier
  • RCA Audio Input Jacks
  • Headphone Output Jack
  • PCB Pads for Audio Input and Output Signals
  • Evaluates the MAX9892ERT+ in a 6-Bump UCSP™ (2 x 3 Array) Package
  • Lead(Pb)-Free and RoHS Compliant
  • Fully Assembled and Tested

Product Details

The MAX9892 evaluation kit (EV kit) is an assembled and tested PCB that evaluates the MAX9892 IC. The MAX9892 is an audio click-and-pop eliminator IC. The EV kit circuit includes an on-board MAX4338 headphone amplifier, two RCA audio input jacks, and a headphone jack to demonstrate the performance of the MAX9892. The EV kit operates from a 2.7V to 5.5V DC power supply.

The MAX9892 EV kit can also eliminate the audible clicks and pops of an external headphone amplifier connected to the EV kit. When utilizing an external headphone amplifier, the MAX9892 EV kit can operate from a lower input-voltage range of 1.7V to 5.5V DC.

Applications

  • Mobile Internet Devices
  • Mobile Phones
  • Notebook Computers
  • Portable Gaming Consoles
  • Portable Media Players
  • Smart Phones
MAX9892EVKIT
Evaluation Kit for the MAX9892

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