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MAX9725

Features: * Low Quiescent Current (2.1mA)* Single-Cell, 0.9V to 1.8V Single-Supply Operation*Fixed Gain Eliminates External Feedback Network MAX9725A: -2V/V MAX9725B: -1.5V/V MAX9725C: -1V/V MAX9725D: -4V/V* Ground-Referenced Outputs Eliminate DC Bias* No Degradation of Low-Frequency Response Due ...

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SeekIC No. : 004412849 Detail

MAX9725: Features: * Low Quiescent Current (2.1mA)* Single-Cell, 0.9V to 1.8V Single-Supply Operation*Fixed Gain Eliminates External Feedback Network MAX9725A: -2V/V MAX9725B: -1.5V/V MAX9725C: -1V/V MAX9725...

MAX9725 Data Sheet

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Part Number:
MAX9725
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

* Low Quiescent Current (2.1mA)
* Single-Cell, 0.9V to 1.8V Single-Supply Operation
* Fixed Gain Eliminates External Feedback Network
   MAX9725A: -2V/V
   MAX9725B: -1.5V/V
   MAX9725C: -1V/V
   MAX9725D: -4V/V
* Ground-Referenced Outputs Eliminate DC Bias
* No Degradation of Low-Frequency Response Due
   to Output Capacitors
* 20mW per Channel into 32Ω
* Low 0.006% THD+N
* High PSRR (80dB at 1kHz)
* Integrated Click-and-Pop Suppression
* Low-Power Shutdown Control
* Short-Circuit Protection
* ±8kV ESD-Protected Amplifier Outputs
* Available in Space-Saving Packages
   12-Bump UCSP (1.54mm x 2.02mm x 0.6mm)
   12-Pin Thin QFN (4mm x 4mm x 0.8mm)


Application

* MP3 Players
* Cellular Phones
* PDAs
* Smart Phones
* Portable Audio Equipment


Pinout

Connection Diagram


Specifications

SGND to PGND ..............................................................-0.3V to +0.3V
VDD to SGND or PGND ......................................................-0.3V to +2V
VSS to PVSS ..................................................................-0.3V to +0.3V
C1P to PGND.......................................................-0.3V to (VDD + 0.3V)
C1N to PGND.....................................................(PVSS - 0.3V) to +0.3V
VSS, PVSS to GND ............................................................+0.3V to -2V
OUTR, OUTL, INR, INL to SGND ................(VSS - 0.3V) to (VDD + 0.3V)
SHDN to SGND or PGND...................................................-0.3V to +4V
Output Short-Circuit Current ............................................Continuous
Continuous Power Dissipation (TA = +70)
   12-Bump UCSP (derate 6.5mW/ above +70)...............518.8mW
   12-Pin Thin QFN (derate 16.9mW/ above +70) ........1349.1mW
Junction Temperature..............................................................+150
Operating Temperature Range ....................................-40 to +85
Storage Temperature Range .....................................-65 to +150
Bump Temperature (soldering) Reflow.....................................+230
Lead Temperature (soldering, 10s) .........................................+300


Description

The MAX9725 fixed-gain, stereo headphone amplifier is ideal for portable equipment where board space is at a premium. The MAX9725 uses a unique, patented DirectDriveTM architecture to produce a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, board space, and component height. Fixed gains of -2V/V (MAX9725A), 1.5V/V (MAX9725B), -1V/V (MAX9725C), and -4V/V (MAX9725D) further reduce external component count.

The MAX9725 delivers up to 20mW per channel into a 32Ω load and achieves 0.006% THD+N. An 80dB at 1kHz power-supply rejection ratio (PSRR) allows the MAX9725 to operate from noisy digital supplies without an additional linear regulator. The MAX9725 includes ±8kV ESD protection on the headphone output. Comprehensive click-andpop circuitry suppresses audible clicks and pops at startup and shutdown. A low-power shutdown mode reduces supply current to 0.6µA (typ).

The MAX9725 operates from a single 0.9V to 1.8V supply, allowing the device to be powered directly from a single AA or AAA battery. The MAX9725 consumes only 2.1mA of supply current, provides short-circuit protection, and is specified over the extended -40°C to +85°C temperature range. The MAX9725 is available in a tiny (1.54mm x 2.02mm x 0.6mm) 12-bump chip-scale package (UCSP™) and a 12-pin thin QFN package (4mm x 4mm x 0.8mm).




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