ENGLISH 简体中文 日本語 한국어  

    Login | Register 


   
 
Enter keywords or part number    



MAX4409
80mW, DirectDrive, Stereo Headphone Amplifier with Common-Mode Sense

80mW, DirectDrive, Stereo Headphone Amplifier with Common-Mode Sense


  QuickView     Technical Documents     Ordering Info     More Information     User Comments (1)     All  
Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 516kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail


Description
The MAX4409 stereo headphone amplifier combines Maxim's DirectDrive™ architecture and a common-mode sense input, which allows the amplifier to reject common-mode noise. Conventional headphone amplifiers require a bulky DC-blocking capacitor between the headphone and the amplifier. DirectDrive produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, which saves cost, board space, and component height. The common-mode voltage sensing corrects for any difference between SGND of the amplifier and the headphone return. This feature minimizes ground-loop noise when the HP socket is used as a line out connection to other grounded equipment, for example, a PC connected to a home hi-fi system.

The MAX4409 draws only 5mA of supply current, delivers up to 80mW per channel into a 16Ω load, and has a low 0.002% THD+N. A high 86dB power-supply rejection ratio allows this device to operate from noisy digital supplies without additional power-supply conditioning. The MAX4409 includes ±8kV ESD protection on the headphone outputs. Comprehensive click-and-pop circuitry eliminates audible clicks and pops on startup and shutdown. A low-power shutdown mode reduces supply current draw to only 6µA.

The MAX4409 operates from a single 1.8V to 3.6V supply, has short-circuit and thermal overload protection, and is specified over the extended -40°C to +85°C temperature range. The MAX4409 is available in tiny 20-pin thin QFN (4mm x 4mm x 0.8mm) and 14-pin TSSOP packages.

Key Features   Applications/Uses
  • No Bulky DC-Blocking Capacitors Required
  • Ground-Referenced Outputs Eliminate DC-Bias Voltages on Headphone Ground Pin
  • Common-Mode Voltage Sensing Eliminates Ground-Loop Noise
  • 96dB CMRR
  • No Degradation of Low-Frequency Response Due to Output Capacitors
  • 80mW per Channel into 16Ω
  • Low 0.002% THD+N
  • High 86dB PSRR
  • Integrated Click-and-Pop Suppression
  • 1.8V to 3.6V Single-Supply Operation
  • Low Quiescent Current
  • Low-Power Shutdown Mode
  • Short-Circuit and Thermal-Overload Protection
  • ±8kV ESD-Protected Amplifier Outputs
  • Available in Space-Saving Packages
    • 14-Pin TSSOP
    • 20-Pin Thin QFN (4mm x 4mm x 0.8mm)

 
  • Cell Phones
  • Desktop PCs
  • MP3 Players
  • Notebook Computers
  • PDAs
  • Portable Audio Equipment
  • Tablet PCs

    Key Specifications:  Headphone Amplifiers
    Part Number Hdph. Amp. VCC
    (V)
    Hdph. Amp. VCC
    (V)
    Hdph. Amp. ICC
    (mA)
    Hdph. Amp. POUT into 32Ω
    (mW)
    Hdph. Amp. Half Pwr. THD+N
    (%)
    SNR
    (dB)
    PSRR
    (dB)
    Hdph. Amp. Ext. Gain Features Package/Pins Smallest Available Pckg.
    (mm2)
    Price
    min max typ @ 1% THD+N A- Weighted min max w/pins See Notes
    MAX4409  1.8 3.6 5 65 0.005 98 86 Yes Common-Mode Sense
    TQFN/20
    17 $0.49 @1k
    See All Headphone Amplifiers (15)

    Diagram
    MAX4409: Typical Application Circuit
    Typical Application Circuit

    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: 1-4 of 4

    MAX4409 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4409ETP  
    Active TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044-3*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4409ETP-T    
    Active

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX4409ETP+  
    Active TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044+3*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4409ETP+T    
    Active TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044+3*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  • New Product Press Release 2003-05-27 

    Related Products

    More Like This: View Product Families for Similar Products

    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.: 19-2842; Rev 2; 2007-12-13
    This page last modified: 2009-10-13


            •         •         •     Privacy Policy     •     Legal Notices

        Copyright © 2009 by Maxim Integrated Products