Maxim > Products > Audio > MAX9703, MAX9704

MAX9703, MAX9704

10W Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers

10W Stereo/15W Mono Class-D Amplifier Ideal for Flat-Panel TV and PC-Display Applications

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX9703/MAX9704 mono/stereo Class D audio power amplifiers provide Class AB amplifier performance with Class D efficiency, conserving board space and eliminating the need for a bulky heatsink. Using a Class D architecture, these devices deliver up to 15W while offering up to 78% efficiency. Modulation and switching schemes render the traditional Class D output filter unnecessary.

The MAX9703/MAX9704 offer two modulation schemes: a fixed-frequency mode (FFM), and a spread-spectrum mode (SSM) that reduces EMI-radiated emissions due to the modulation frequency. The device utilizes a fully differential architecture, a full bridged output, and comprehensive click-and-pop suppression.

The MAX9703/MAX9704 feature high 80dB PSRR, low 0.07% THD+N, and SNR in excess of 95dB. Short-circuit and thermal-overload protection prevent the devices from being damaged during a fault condition. The MAX9703 is available in a 32-pin TQFN (5mm x 5mm x 0.8mm) package. The MAX9704 is available in a 32-pin TQFN (7mm x 7mm x 0.8mm) package. Both devices are specified over the extended -40°C to +85°C temperature range.

Data Sheet

Download	Rev 7	(PDF, 3MB)
E-Mail

An evaluation kit is available: MAX9714EVKIT

Key Features

Filterless Class D Amplifier
Unique Spread-Spectrum Mode Offers 5dB Emissions Improvement Over Conventional Methods
Up to 78% Efficient (R_L = 8Ω)
Up to 88% Efficient (R_L = 16Ω)
15W Continuous Output Power into 8Ω (MAX9703)
2x10W Continuous Output Power into 8Ω (MAX9704)
Low 0.07% THD+N
High PSRR (80dB at 1kHz)
10V to 25V Single-Supply Operation
Differential Inputs Minimize Common-Mode Noise
Pin-Selectable Gain Reduces Component Count
Industry-Leading Click-and-Pop Suppression
Low Quiescent Current (24mA)
Low-Power Shutdown Mode (0.2μA)
Short-Circuit and Thermal-Overload Protection
Available in Thermally Efficient, Space-Saving Packages
- 32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9703
- 32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9704

Applications/Uses

Automotive
Desktop PCs
Hands-Free Car Phone Adapters
LCD Monitors
LCD Projectors
LCD TVs

Key Specifications:

Speaker Amplifiers

Part Number

Class

Spkr. Amp. V_CC
(V)

Spkr. Amp. I_CC
(mA)

P_OUT into 4Ω @ 1% THD+N
(W)

P_OUT into 4Ω @ 10% THD+N
(W)

P_OUT into 8Ω @ 1% THD+N
(W)

P_OUT into 8Ω @ 10% THD+N
(W)

Spkr. Amp. Half Pwr. THD+N
(%)

SNR
(dB)

PSRR
(dB)

Spkr. Amp. Ext. Gain

Spkr. Amp. Fxd. Gain
(V/V)

Channels

Budgetary Price

min

max

typ

min

A- Weighted

min

max

See Notes

MAX9703

0.015

4.5

$1.25 @1k

MAX9704

0.02

$1.95 @1k

See All Speaker Amplifiers (41)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Block Diagram

More Information

New Product Press Release

[ 2004-02-19 ]

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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.: 19-3160 Rev 7; 2006-03-28
This page last modified: 2011-01-04