MAX9758 Maxim Integrated Products, MAX9758 Datasheet

MAX9758

Manufacturer Part Number

MAX9758

Description

2.3W Stereo Speaker Amplifiers and DirectDrive Headphone Amplifiers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX9758.pdf (31 pages)

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The MAX9756/MAX9757/MAX9758 combine dual, 2.3W,

bridge tied load (BTL) stereo audio power amplifiers and

a DirectDrive

These devices feature single-supply voltage operation,

shutdown mode, logic-selectable gain, a headphone

sense input, a 31-step analog volume control, and indus-

try-leading click-and-pop suppression. The headphone

amplifier uses Maxim’s patent-pending DirectDrive archi-

tecture 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 speak-

er in the event of an overpowered output.

The MAX9756/MAX9758s’ 150mA internal linear regula-

tor 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.

19-3782; Rev 0; 8/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Headphone Amplifiers with Automatic Level Control

Notebook PCs

Tablet PCs

Portable DVD

Players

BEEP

VOL

HPS

SINGLE SUPPLY 4.5V TO 5.5V

2.3W Stereo Speaker Amplifiers and DirectDrive

MAX9756

headphone amplifier in a single device.

________________________________________________________________ Maxim Integrated Products

ALC

LDO

General Description

1.2V TO 5V

Applications

Flat-Panel TVs

PC Displays

LCD Projectors

Portable Audio

BEEP

VOL

HPS

SINGLE SUPPLY 4.5V TO 5.5V

MAX9757

ALC

♦ Automatic Level Control—Protects Speakers

♦ Analog Volume Control

♦ 120mW DirectDrive Headphone Amplifiers (16Ω)

♦ 150mA Adjustable LDO

♦ Class AB, 2.3W, Stereo BTL Speaker Amplifiers

♦ High 95dB PSRR

♦ Low-Power Shutdown Mode

♦ Industry-Leading Click-and-Pop Suppression

♦ Short-Circuit and Thermal Protection

♦ Beep Input

Note: All devices specified for -40°C to +85°C operating

temperature range.

+Denotes lead-free package.

*Future product—contact factory for availability.

**EP = Exposed paddle.

MAX9756ETX+

MAX9757ETJ+*

MAX9758ETJ+*

(3Ω)

PART

Simplified Block Diagrams

ALC

—

√

BEEP

Ordering Information

VOL

HPS

SINGLE SUPPLY 4.5V TO 5.5V

MAX9758

LDO

—

√

LDO

PIN-PACKAGE

36 Thin QFN-EP**

32 Thin QFN-EP**

www.DataSheet4U.com

Features

1.2V TO 5V

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