MAX9736 Maxim Integrated Products, MAX9736 Datasheet

MAX9736

Manufacturer Part Number

MAX9736

Description

Mono/Stereo High-Power Class D Amplifier

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX9736.pdf (22 pages)

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The MAX9736A/B Class D amplifiers provide high-per-

formance, thermally efficient amplifier solutions. The

MAX9736A delivers 2 x 15W into 8Ω loads, or 1 x 30W

into a 4Ω load. The MAX9736B delivers 2 x 6W into 8Ω

loads or 1 x 12W into a 4Ω load. These devices are pin-

for-pin compatible, allowing a single audio design to

work across a broad range of platforms, simplifying

design efforts, and reducing PCB inventory.

Both devices operate from 8V to 28V and provide a

high PSRR, eliminating the need for a regulated power

supply. The MAX9736 offers up to 88% efficiency at

12V supply.

Pin-selectable modulation schemes select between fil-

terless modulation and classic PWM modulation.

Filterless modulation allows the MAX9736 to pass CE

EMI limits with 1m cables using only a low-cost ferrite

bead and capacitor on each output. Classic PWM mod-

ulation is optimized for best audio performance when

using a full LC filter.

A pin-selectable stereo/mono mode allows stereo oper-

ation into 8Ω loads or mono operation into 4Ω loads. In

mono mode, the right input op amp becomes available

as a spare device, allowing flexibility in system design.

Comprehensive click-and-pop reduction circuitry mini-

mizes noise coming into and out of shutdown or mute.

Input op amps allow the user to create summing amplifiers,

lowpass or highpass filters, and select an optimal gain.

The MAX9736A/B are available in 32-pin TQFN pack-

ages and specified over the -40°C to +85°C tempera-

ture range.

19-3108; Rev 1; 10/08

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

INPUT RESISTORS AND

CAPACITORS SELECT GAIN

AND CUTOFF FREQUENCY

AUDIO

INPUTS

Mono/Stereo High-Power Class D Amplifier

________________________________________________________________ Maxim Integrated Products

SHDN

MUTE

General Description

MONO

♦ Wide 8V to 28V Supply Voltage Range

♦ Spread-Spectrum Modulation Enables Low EMI

♦ Passes CE EMI Limits with Low-Cost Ferrite

♦ Low BOM Cost, Pin-for-Pin Compatible Family

♦ High 67dB PSRR at 1kHz Reduces Supply Cost

♦ 88% Efficiency Eliminates Heatsink

♦ Thermal and Output Current Protection

♦ < 1µA Shutdown Mode

♦ Mute Function

♦ Space-Saving, 7mm x 7mm x 0.8mm, 32-Pin TQFN

Note: All devices are specified over the -40°C to +85°C oper-

ating temperature range.

+ Denotes a lead(Pb)-free/RoHS-compliant package.

* EP = Exposed pad.

MAX9736AETJ+

MAX9736BETJ+

LCD/PDP/CRT Monitors

LCD/PDP/CRT TVs

MP3 Docking Stations

Solution

Bead/Capacitor Filter

Package

PART

MAX9736

8V TO 28V

OUTPUT POWER

STEREO/MONO

Ordering Information

15W stereo/

30W mono

6W stereo/

12W mono

Simplified Diagram

Notebook PCs

PC Speakers

All-in-One PCs

Applications

PIN-PACKAGE

32 TQFN-EP*

Features

8Ω

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