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MAX9787
2.2W Stereo Audio Power Amplifier with Analog Volume Control

High PSRR, Low 0.01% Total Harmonic Distortion (THD)


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Status
All versions are being discontinued and are subject to Last Time Buy, after which new orders can not be placed.

Data Sheet
FULL DATA SHEET (PDF, 324kB)
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Description
The MAX9787 combines a stereo, 2.2W audio power amplifier with an analog volume control in a single device. A high 90dB PSRR and low 0.01% THD+N ensures clean, low-distortion amplification of the audio signal.

The analog volume control can be driven with a potentiometer, an RC-filtered PWM source, or a DAC output. A BEEP input allows the addition of alert signals from the controller to the audio path.

Industry-leading, click-and-pop suppression eliminates audible transients during power and shutdown cycles. Other features include single-supply voltage, a shutdown mode, logic-selectable gain, thermal-overload, and output short-circuit protection.

The MAX9787 is offered in a space-saving, thermally efficient, 28-pin thin QFN (5mm x 5mm x 0.8mm) package, and is specified over the extended -40°C to +85°C temperature range.

Key Features   Applications/Uses
  • Class AB, 2.2W, Stereo BTL Speaker Amplifiers
  • Analog Volume Control
  • BEEP Input with Glitch Filter
  • 5V Single-Supply Operation
  • High 90dB PSRR
  • Low-Power Shutdown Mode
  • Industry-Leading Click-and-Pop Suppression
  • Low 0.01% THD+N at 1kHz
  • Short-Circuit and Thermal Protection
  • Selectable-Gain Settings
  • Space-Saving 28-Pin TQFN (5mm x 5mm x 0.8mm)

 
  • Flat-Panel TVs
  • LCD Projectors
  • Multimedia Monitors
  • Notebook PCs
  • PC Displays
  • Portable DVD Players
  • Tablet PCs

    Diagram
    MAX9787: Typical Operating Circuit
    Typical Operating Circuit

    Design Guides
  • Low-Power Notebook ICs (PDF)
  • Audio (PDF)
  • Displays (PDF)
  • Flat-Panel Display (PDF)

    Reliability Reports
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    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-2 of 2

    MAX9787 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9787ETI+T    
    Last Time Buy

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX9787ETI+  
    Last Time Buy TQFN;28 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0029 (PDF)
    Use pkgcode/variation: T2855N+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  • New Product Press Release 2005-12-02 

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    Document Ref.: 19-3882; Rev 1; 2007-02-16
    This page last modified: 2007-11-19


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