ENGLISH 简体中文 日本語 한국어  

MAX9756, MAX9757, MAX9758
2.3W Stereo Speaker Amplifiers and DirectDrive Headphone Amplifiers with Automatic Level Control

Audio Amplifier with Automatic Level Control for Speaker Protection and Better Sound Quality


  QuickView     Technical Documents     Ordering Info     More Information     User Comments (0)     All  
Data Sheet
FULL DATA SHEET (PDF, 768kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail


Description
The MAX9756/MAX9757/MAX9758 combine dual, 2.3W, bridge tied load (BTL) stereo audio power amplifiers and a DirectDrive™ headphone amplifier in a single device. These devices feature single-supply voltage operation, shutdown mode, logic-selectable gain, a headphone sense input, a 31-step analog volume control, and industry-leading click-and-pop suppression. The headphone amplifier uses Maxim's patent-pending DirectDrive architecture that produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors.

The MAX9756/MAX9757 feature automatic level control (ALC) that automatically limits output power to the speaker in the event of an overpowered output.

The MAX9756/MAX9758s' 150mA internal linear regulator provides a complete solution for DAC- or CODEC-based designs.

The MAX9756/MAX9757/MAX9758 are offered in space-saving, thermally efficient 32-pin (5mm x 5mm x 0.8mm) and 36-pin thin QFN (6mm x 6mm x 0.8mm) packages. All devices are specified over the extended -40°C to +85°C temperature range.

Key Features   Applications/Uses
  • Automatic Level Control—Protects Speakers
  • Analog Volume Control
  • 120mW DirectDrive Headphone Amplifiers (16)
  • 150mA Adjustable LDO
  • Class AB, 2.3W, Stereo BTL Speaker Amplifiers (3)
  • High 95dB PSRR
  • Low-Power Shutdown Mode
  • Industry-Leading Click-and-Pop Suppression
  • Short-Circuit and Thermal Protection
  • Beep Input

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

    Key Specifications:   Integrated Amplifiers
    Part Number Functions Class Speaker Amp. VCC (min) (V) Speaker Amp. VCC (max) (V) Speaker Amp. ICC (typ) (mA) Speaker Amp. POUT (W) Speaker Amp. Half Pwr. THD+N (%) Headphone Amp. VCC (min) (V) Headphone Amp. VCC (max) (V) Headphone Amp. ICC (typ) (mA) Headph. Amp. POUT into 32Ω @1% THD+N (W) Headphone Amp. Half Pwr. THD+N (%) Features Package Price**
    MAX9756 
    PC Notebook Subsystem
    AB 4.5 5.5 14 2 0.02 3 5.5 7 0.068 0.01
    Automatic Level Control (ALC)
    THIN QFN/36 $1.90 @ 1k
    MAX9757  THIN QFN/32 $1.75 @ 1k
    MAX9758  THIN QFN/32 $1.75 @ 1k
    See All Integrated Amplifiers (21)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX9756, MAX9757, MAX9758: Simplified Block Diagrams
    Simplified Block Diagrams

    Application Notes
  • Application Note 3673: An Overview of Automatic Level Control - MAX9756
  • Application Note 3877: ALC Improves Sound Quality While Protecting Speakers - MAX9756

    Evaluation Kits
  • MAX9756EVKIT

    Design Guides
  • LOW-POWER NOTEBOOK ICs (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: 1-6 of 6

    MAX9756 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9756ETX+  
    THIN QFN;36 pin;
    Dwg: 21-0141I (PDF)
    Use pkgcode/variation: T3666N+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9756ETX+T  



    -40°C to +85°C See data sheet
    MAX9757 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9757ETJ+  
    THIN QFN;32 pin;
    Dwg: 21-0140L (PDF)
    Use pkgcode/variation: T3255N+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9757ETJ+T  



    -40°C to +85°C See data sheet
    MAX9758 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9758ETJ+  
    THIN QFN;32 pin;
    Dwg: 21-0140L (PDF)
    Use pkgcode/variation: T3255N+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9758ETJ+T  



    -40°C to +85°C See data sheet

    More Information
  • New Product Press Release 2005-11-04 

    Related Products
    MAX9750, MAX9751, MAX9755 2.6W Stereo Audio Power Amplifiers and DirectDrive® Headphone Amplifiers

    Didn't Find What You Need?
  • Next Day Product Selection Assistance from Applications Engineers
  • Parametric Search
  • Applications Help
  •  QuickView   Technical Documents   Ordering Info   More Information  
     Description 
     Key Features 
     Applications/Uses 
     Key Specifications 
     Diagram 

     Data Sheet 
     Application Notes 
     Design Guides 
     Engineering Journals 
     Reliability Reports 
     Software/Models 
     Evaluation Kits 

     Price and Availability 
     Samples 
     Buy Online 
     Package Information 
     Lead-Free Information 

     Related Products 
     Notes and Comments 
     Evaluation Kits 

    Document Ref.: 19-3782; Rev 1; 2006-01-24
    This page last modified: 2006-02-03



          Privacy Policy    Legal Notices

          Copyright © 2008 by Maxim Integrated Products, Dallas Semiconductor