Maxim > Products > Audio > MAX9756, MAX9757, MAX9758

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

Overview

Technical Documents

Ordering Info

Status

All versions are No Longer Available.

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 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.

Data Sheet

Download	Rev 1	(PDF, 792kB)
E-Mail

Key Features

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

Applications/Uses

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

Diagram

Simplified Block Diagrams

Application Notes

Application Note 3673		An Overview of Automatic Level Control
Application Note 3877		ALC Improves Sound Quality While Protecting Speakers

Product Guides

Audio (PDF)

Reliability Reports

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Software/Models

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Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9756ETX+		N/A	No Longer Available	TQFN;36 pin;37.2 mm² Outline Drawing:21-0141 (PDF) Land Pattern: 90-0052 (PDF) Use pkgcode/variation: T3666N+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9756ETX+T		N/A	No Longer Available	TQFN;36 pin;37.2 mm² Outline Drawing:21-0141 (PDF) Land Pattern: 90-0052 (PDF) Use pkgcode/variation: T3666N+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9757ETJ+		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0015 (PDF) Use pkgcode/variation: T3255N+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9757ETJ+T		N/A	No Longer Available	QFN;32 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9758ETJ+		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0015 (PDF) Use pkgcode/variation: T3255N+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9758ETJ+T		N/A	No Longer Available	QFN;32 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* 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.

Products with Similar Part Numbers

MAX9756EVKIT

Evaluation Kit for the MAX9756

More Information

New Product Press Release

[ 2005-11-04 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-3782 Rev 1; 2006-01-24
This page last modified: 2010-05-26