MAX9750 查看數據表（PDF） - Maxim Integrated

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MAX9750

2.6W Stereo Audio Power Amplifiers and DirectDrive Headphone Amplifiers

Maxim Integrated 

19-3006; Rev 4; 12/04

2.6W Stereo Audio Power Amplifiers and

DirectDrive Headphone Amplifiers

General Description

The MAX9750/MAX9751/MAX9755 combine a stereo,

2.6W audio power amplifier and stereo DirectDrive

110mW headphone amplifier in a single device. The

headphone amplifier uses Maxim’s patented DirectDrive

architecture that produces a ground-referenced output

from a single supply, eliminating the need for large DC-

blocking capacitors, saving cost, space, and component

height. A high 90dB PSRR and low 0.01% THD+N

ensures clean, low-distortion amplification of the audio

signal.

The MAX9750 features an analog volume control, and a

BEEP input. The MAX9751 features a 2:1 input multiplexer,

allowing multiple audio sources to be selected. All devices

feature a single-supply voltage, a shutdown mode, logic-

selectable gain, and a headphone sense input. Industry-

leading click-and-pop suppression eliminates audible

transients during power and shutdown cycles.

The MAX9750/MAX9751/MAX9755 are offered in space-

saving, thermally efficient 28-pin thin QFN (5mm x 5mm

x 0.8mm) and 28-pin TSSOP packages. Both devices

have thermal-overload and output short-circuit protec-

tion, and are specified over the extended -40°C to +85°C

temperature range.

Applications

Notebook PCs

Flat-Panel TVs

Tablet PCs

PC Displays

Portable DVD Players LCD Projectors

Simplified Block Diagrams

VOL

BEEP

Features

♦ No DC-Blocking Capacitors Required—Provides

Industry’s Most Compact Notebook Audio

Solution

♦ PC2001 Compliant

♦ 5V Single-Supply Operation

♦ Class AB 2.6W Stereo BTL Speaker Amplifiers

♦ 110mW DirectDrive Headphone Amplifiers

♦ High 90dB PSRR

♦ Low-Power Shutdown Mode

♦ Industry-Leading Click-and-Pop Suppression

♦ Low 0.01% THD+N at 1kHz

♦ Short-Circuit and Thermal Protection

♦ Selectable Gain Settings

♦ Analog Volume Control (MAX9750)

♦ Beep Input with Glitch Filter (MAX9750)

♦ 2:1 Stereo Input MUX (MAX9751)

♦ ±8kV ESD-Protected Headphone Driver Outputs

♦ Available in Space-Saving, Thermally Efficient

Packages

28-Pin Thin QFN (5mm x 5mm x 0.8mm)

28-Pin TSSOP

Ordering Information

PART

TEMP RANGE

PIN-

PACKAGE

MAXIMUM

GAIN (dB)

MAX9750AETI+ -40°C to +85°C 28 Thin QFN 13.5

MAX9750AEUI -40°C to +85°C 28 TSSOP

13.5

MAX9750BETI+ -40°C to +85°C 28 Thin QFN 19.5

MAX9750BEUI -40°C to +85°C 28 TSSOP

19.5

MAX9750CETI+ -40°C to +85°C 28 Thin QFN 10.5

MAX9750CEUI -40°C to +85°C 28 TSSOP

10.5

MAX9751ETI+ -40°C to +85°C 28 Thin QFN 10.5

MAX9751EUI

-40°C to +85°C 28 TSSOP

10.5

MAX9755ETI+ -40°C to +85°C 28 Thin QFN 10.5

MAX9755EUI

-40°C to +85°C 28 TSSOP

10.5

+Lead-free package.

MAX9750

Simplified Block Diagrams continued at end of data sheet.

________________________________________________________________ Maxim Integrated Products 1

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.

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