General Description

The MAX9716/MAX9717 audio power amplifiers are ideal for portable audio devices with internal speakers. A bridge-tied load (BTL) architecture minimizes external component count, while providing high-quality audio reproduction. Both devices deliver 1.4W continuous power into a 4Ω load with less than 1 Total Harmonic Distortion (THD) while operating from a single +5V supply. With an 8Ω load, both devices deliver 1W continuous power. These devices also deliver 350mW continuous power into an 8Ω load while operating from a single +3.0V supply. The devices are available as adjustable gain amplifiers (MAX9716/MAX9717A) or with internally fixed gains of 6dB, 9dB, and 12dB (MAX9717B/MAX9717C/MAX9717D), reducing component count.

Features

♦ 2.7V to 5.5V Single-Supply Operation

♦ 1.4W into 4Ω at 1 THD+N

♦ 10nA Low-Power Shutdown Mode

♦ 73dB PSRR at 1kHz

♦ No Audible Clicks or Pops at Power-Up/Down

♦ Internal Fixed Gain to Reduce Component Count

   (MAX9717B/C/D)

♦ Adjustable Gain Option (MAX9716/MAX9717A)

♦ BTL/SE Input Senses when Headphones are

   Connected (MAX9717)

♦ Pin Compatible with LM4890 (MAX9716)

♦ Pin Compatible with TPA711 (MAX9717A)

♦ Available in Compact, Thermally Enhanced µMAX

   and TDFN (3mm x 3mm) Packages

Applications

   Mobile Phones

   PDAs

   Portable Devices