Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers

Low-Cost Speaker Amplifiers Offer Up to 1.3W into 4Ω, Headphone Sensing, and Pin-for-Pin Compatible Packaging

Please check latest availability status for a specific part variant.


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.

A low-power shutdown mode disables the bias generator and amplifiers, reducing quiescent current consumption to less than 10nA. These devices feature Maxim's industry-leading, comprehensive click-and-pop suppression that reduces audible clicks and pops during startup and shutdown.

The MAX9717 features a headphone sense input (active-low BTL/SE) that senses when a headphone is connected to the device, disables the BTL slave driver, muting the speaker while driving the headphone as a single-ended load. The MAX9716 is pin compatible with the LM4890 and is available in 9-bump UCSP™, 8-pin TDFN (3mm x 3mm), and 8-pin µMAX® packages. The MAX9717 is available in 9-bump UCSP, 8-pin TDFN, and 8-pin µMAX packages. Both devices operate over the -40°C to +85°C extended temperature range.
MAX9716, MAX9717: Pin Configuration MAX9716, MAX9717: Pin Configuration Enlarge+

Key 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)
  • Active-Low 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


  • Mobile Phones
  • PDAs
  • Portable Devices
Part NumberClassSpkr. Amp. VCC
Spkr. Amp. VCC
Spkr. Amp. ICC
POUT into 4Ω @ 1% THD+N
POUT into 4Ω @ 10% THD+N
POUT into 8Ω @ 1% THD+N
POUT into 8Ω @ 10% THD+N
Spkr. Amp. Half Pwr. THD+N
minmaxtypminminminminA- WeightedminSee Notes
MAX9716 AB2.
UCSP (B)/9
$0.46 @1k
UCSP (B)/9
$0.36 @1k
See All Speaker Amplifiers (33)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

App Note 3924 Thermal Considerations for a UCSP Package

Quality and Environmental Data

Request Reliability Report for: MAX9717 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX9717AEBL+T
  • MAX9717AEBL-T
  • MAX9717AETA+
  • MAX9717AETA+T
  • MAX9717AETA-T
  • MAX9717BEBL+T
  • MAX9717BEBL-T
  • MAX9717BETA+
  • MAX9717BETA+T
  • MAX9717BETA-T
  • MAX9717CEBL+T
  • MAX9717CEBL-T
  • MAX9717CETA+
  • MAX9717CETA+T
  • MAX9717CETA-T
  • MAX9717DEBL+T
  • MAX9717DEBL-T
  • MAX9717DETA+
  • MAX9717DETA+T
  • MAX9717DETA-T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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