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MAX9725 - Stereo Headphone Amplifier

General Description

The MAX9725 fixed-gain, stereo headphone amplifier is ideal for portable equipment where board space is at a premium.

Key Features

  • Low Quiescent Current (2.1mA).
  • Single-Cell, 0.9V to 1.8V Single-Supply Operation.
  • Fixed Gain Eliminates External Feedback Network MAX9725A: -2V/V MAX9725B: -1.5V/V MAX9725C: -1V/V MAX9725D: -4V/V.
  • Ground-Referenced Outputs Eliminate DC Bias.
  • No Degradation of Low-Frequency Response Due to Output Capacitors.
  • 20mW per Channel into 32Ω.
  • Low 0.006% THD+N.
  • High PSRR (80dB at 1kHz).
  • Integrated Click-and-Pop Suppression.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com 19-3465; Rev 0; 11/04 1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown General Description The MAX9725 fixed-gain, stereo headphone amplifier is ideal for portable equipment where board space is at a premium. The MAX9725 uses a unique, patented DirectDriveTM architecture to produce a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, board space, and component height. Fixed gains of -2V/V (MAX9725A), 1.5V/V (MAX9725B), -1V/V (MAX9725C), and -4V/V (MAX9725D) further reduce external component count. The MAX9725 delivers up to 20mW per channel into a 32Ω load and achieves 0.006% THD+N.