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MAX9765, MAX9766, MAX9767
750mW Audio Amplifiers with Headphone Amp, Microphone Preamp, and Input Mux

750mW Audio Amplifier with Headphone Amp, Microphone Preamp, and Mux Optimized for Portable Audio Applications


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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, 840kB)
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Description
The MAX9765/MAX9766/MAX9767 family combines speaker, headphone, and microphone amplifiers, all in a small thin QFN package. The MAX9765 is targeted at stereo speaker playback applications and includes a stereo bridge-tied load (BTL) speaker amp, stereo headphone amp, single-ended output mic amp, input MUX, and I²C control. The MAX9766 is targeted at mono speaker playback applications and includes a mono BTL speaker amp, stereo headphone amp, differential output mic amp, input MUX, and I²C control. The MAX9767 is targeted at applications that do not require a headphone amp and includes a stereo BTL speaker amp, differential output mic amp, and parallel control.

These devices operate from a single 2.7V to 5.5V supply. A high 95dB PSRR allows these devices to operate from noisy supplies without additional power conditioning. An ultra-low 0.003% THD+N ensures clean, low distortion amplification of the audio signal. Patented click-and-pop suppression eliminates audible transients on power and shutdown cycles.

In speaker mode, the amplifiers can deliver up to 750mW of continuous average power into a 4Ω load. In headphone mode, the amplifier can deliver up to 65mW of continuous average power into a 16Ω load. The gain of the amplifiers is externally set, allowing maximum flexibility in optimizing output levels for a given load. The MAX9765/MAX9766 also feature a 2:1 input multiplexer, allowing multiple audio sources to be selected. The various functions are controlled by either an I²C-compatible (MAX9765/MAX9766) or simple parallel control interface (MAX9767).

All devices include two low-noise microphone preamps, a differential amp for internal microphones, and a single-ended amplifier for additional external microphones. A microphone bias output is provided, reducing external component count.

The MAX9765/MAX9766/MAX9767 are available in a thermally efficient 32-pin thin QFN package (5mm x 5mm x 0.8mm). All devices have short-circuit and thermal-overload protection (OVP) and are specified over the extended -40°C to +85°C temperature range.

An evaluation kit is available:  MAX9765EVCMAXQU, MAX9765EVKIT  

Key Features   Applications/Uses
  • 750mW BTL Stereo Speaker Amplifier
  • 65mW Stereo Headphone Amplifier
  • 2.7V to 5.5V Single-Supply Operation
  • Patented Click-and-Pop Suppression
  • Low 0.003% THD+N
  • Low Quiescent Current: 13mA
  • Low-Power Shutdown Mode: 5µA
  • MUTE Function
  • Headphone Sense Input
  • Stereo 2:1 Input Multiplexer
  • Optional 2-Wire, I²C-Compatible, or Parallel Interface
  • Small 32-Pin Thin QFN (5mm x 5mm x 0.8mm) Package

 
  • Cell Phones
  • Digital Cameras
  • Notebook Computers
  • PDA Audio Systems
  • Tablet PCs

    Evaluation Kits
  • MAX9765EVCMAXQU, MAX9765EVKIT

    Design Guides
  • Video (PDF)
  • Audio (PDF)

    Reliability Reports
  • Show FIT data for:
  • Request Reliability Report for:

    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: 1-12 of 12

    MAX9765 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9765ETJ    
    Last Time Buy TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0012 (PDF)
    Use pkgcode/variation: T3255-4*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9765ETJ-T    
    Last Time Buy

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX9765ETJ+    
    Last Time Buy TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0012 (PDF)
    Use pkgcode/variation: T3255+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9765ETJ+T    
    Last Time Buy

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX9766 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9766ETJ+    
    Last Time Buy TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0012 (PDF)
    Use pkgcode/variation: T3255+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9766ETJ    
    Last Time Buy TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0012 (PDF)
    Use pkgcode/variation: T3255-4*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9766ETJ-T    
    Last Time Buy

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX9766ETJ+T    
    Last Time Buy TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0012 (PDF)
    Use pkgcode/variation: T3255+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9767 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9767ETJ+    
    Last Time Buy TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0012 (PDF)
    Use pkgcode/variation: T3255+4*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9767ETJ+T    
    Last Time Buy

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX9767ETJ    
    Last Time Buy TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0012 (PDF)
    Use pkgcode/variation: T3255-4*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9767ETJ-T    
    Last Time Buy

    Land Pattern: Not Available

    -40°C to +85°C See data sheet

    More Information
  • New Product Press Release 2003-05-12 

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    Document Ref.: 19-2832; Rev 2; 2007-04-19
    This page last modified: 2007-08-08


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