Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsLinear IC - Audio amplifier 1-channel (mono) Class AB TQFN 12 (4x4)

General Description

The MAX9710/MAX9711 are stereo/mono 3W bridge-tied

load (BTL) audio power amplifiers. These devices are

PC99/01 compliant, operate from a single 4.5V to 5.5V

supply, and feature an industry-leading 100dB PSRR,

which allows these devices to operate from noisy sup-

plies without additional, costly power-supply condition-

ing. An ultra-low 0.005% THD+N ensures clean,

low-distortion amplification of the audio signal while

click-and-pop suppression eliminates audible transients

on power and shutdown cycles. Power-saving features

include low 2mV V

(minimizing DC current drain

through the speakers), low 7mA supply current, and a

0.5µA shutdown mode. A MUTE function allows the out-

puts to be quickly enabled or disabled.

These devices include thermal overload protection, are

specified over the extended -40°C to +85°C tempera-

ture range, and are supplied in thermally efficient pack-

ages. The MAX9710 is available in a 20-pin thin QFN

package (5mm

✕ 5mm ✕ 0.8mm). The MAX9711 is

available in a 12-pin thin QFN package (4mm

✕ 4mm ✕

0.8mm).

Applications

Features

♦ 3W into 3Ω (1% THD+N)

♦ 4W into 3Ω (10% THD+N)

♦ Industry-Leading, Ultra-High 100dB PSRR

♦ PC99/01 Compliant

♦ Click-and-Pop Suppression

♦ Low 0.005% THD+N

♦ Low Quiescent Current: 7mA

♦ Low-Power Shutdown Mode: 0.5µA

♦ MUTE Function

♦ Tiny 20-Pin Thin QFN (5mm

✕ 5mm ✕ 0.8mm)

MAX9710/MAX9711

3W Mono/Stereo BTL Audio Power Amplifiers

with Shutdown

________________________________________________________________

Maxim Integrated Products

Ordering Information

19-2841; Rev 1; 6/08

EVALUATION KIT

AVAILABLE

PART

TEMP RANGE

PIN-PACKAGE

AMP

MAX9710ETP

-40°C to +85°C

20-Thin QFN-EP*

Stereo

MAX9711ETC

-40°C to +85°C

12-Thin QFN-EP*

Mono

MAX9710

TQFN

1INL

2BIAS

3N.C.

4MUTE

5INR

PGND

OUTR+

OUTR-

N.C.

11 PGND

12 V

13 N.C.

15 PGND

N.C.

OUTL-

OUTL+

PGND

SHDN

TOP VIEW

SINGLE SUPPLY

4.5V TO 5.5V

MAX9710

LEFT IN

RIGHT IN

Pin Configurations

Simplified Block Diagram

EP = Exposed pad.

Notebook PCs

Flat-Panel TVs

Flat-Panel PC Displays

Two-Way Radios

General-Purpose Audio

Powered Speakers

Pin Configurations continued at end of data sheet.

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.

Summary of content (13 pages)

PAGE 1
KIT ATION EVALU E L B AVAILA 19-2841; Rev 1; 6/08 3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown The MAX9710/MAX9711 are stereo/mono 3W bridge-tied load (BTL) audio power amplifiers. These devices are PC99/01 compliant, operate from a single 4.5V to 5.5V supply, and feature an industry-leading 100dB PSRR, which allows these devices to operate from noisy supplies without additional, costly power-supply conditioning. An ultra-low 0.
PAGE 2
MAX9710/MAX9711 3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown ABSOLUTE MAXIMUM RATINGS 20-Pin Thin QFN (derate 20.8mW/°C above +70°C) ....1667mW Operating Temperature Range............................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C VDD to GND, PGND .........................................
PAGE 3
W Mono/Stereo BTL Audio Power Amplifiers with Shutdown RL = 3Ω AV = -4V/V 1 0.1 THD+N (%) THD+N (%) POUT = 500mW THD+N (%) 0.1 0.1 POUT = 500mW POUT = 2.5W POUT = 2.5W POUT = 2W 0.001 0.001 0.001 10 100 1k POUT = 250mW 0.01 0.01 0.01 RL = 4Ω AV = -2V/V 10k 10 100k MAx9710/11 toc03 1 MAx9710/11 toc02 RL = 3Ω AV = -2V/V MAx9710/11 toc01 1 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs.
PAGE 4
Typical Operating Characteristics (continued) (VDD = 5V, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.) 1 f = 10kHz f = 1kHz 1 0.1 f = 20Hz 1.5 2.0 2.5 3.0 3.5 0 0.5 1.0 1.5 0.5 1.0 1.5 OUTPUT POWER vs. TEMPERATURE OUTPUT POWER vs. TEMPERATURE OUTPUT POWER vs. TEMPERATURE THD+N = 1% 2 THD+N = 10% 3 OUTPUT POWER (W) OUTPUT POWER (W) 3 2.0 MAX9710/11 toc14 MAX9710/11 toc13 4 THD+N = 1% 2 THD+N = 10% 1.5 THD+N = 1% 1.0 0.
PAGE 5
3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown POWER-SUPPLY REJECTION RATIO vs. FREQUENCY CROSSTALK (dB) -20 VIN = 200mVP-P RL = 8Ω -20 -40 -60 MAX9710/11 toc20 VRIPPLE = 200mVP-P PSRR (dB) CROSSTALK vs. FREQUENCY 0 MAX9710/11 toc19 0 -40 -60 RIGHT TO LEFT -80 -80 -100 -100 -120 LEFT TO RIGHT 10 100 1k 10k 0.01 100k 0.
PAGE 6
Typical Operating Characteristics (continued) (VDD = 5V, THD+N measurement bandwidth = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.) 12 10 8 TA = -40°C 6 TA = +85°C 8 6 4 TA = -40°C 4 SHUTDOWN SUPPLY CURRENT vs. SUPPLY VOLTAGE 1.0 0.8 SUPPLY CURRENT (μA) TA = +25°C TA = +25°C 10 SUPPLY CURRENT (mA) TA = +85°C MAX9710/11 toc26 16 14 12 MAX9710/11 toc25 18 MAX9711 SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX9710/11 toc27 MAX9710 SUPPLY CURRENT vs.
PAGE 7
3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown The MAX9710/MAX9711 are 3W BTL speaker amplifiers. The MAX9710 is a stereo speaker amplifier, while the MAX9711 is a mono speaker amplifier. Both devices feature a low-power shutdown mode, MUTE mode, and comprehensive click-and-pop suppression. These devices consist of high output-current op amps configured as BTL amplifiers (see Functional Diagrams). The device gain is set by RF and RIN.
PAGE 8
MAX9710/MAX9711 3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown Power Dissipation and Heat Sinking Under normal operating conditions, the MAX9710/ MAX9711 dissipate a significant amount of power.
PAGE 9
3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown 15kΩ 10 VOUT = 8VP-P MAX9710/MAX9711 TOTAL HARMONIC DISTORTI0N PLUS NOISE vs. FREQUENCY 1μF AUDIO INPUT 15kΩ 2 IN 10Ω OUT+ 4 1 THD+N (%) 100μH * 0.1 0.01 OUT- 0.001 0.01 0.1 1 10 100 MAX9711 12 *PIEZOELECTRIC SPEAKER. FREQUENCY (Hz) Figure 2. MAX9711 Piezoelectric Speaker Driver THD+N vs. Frequency The capacitive nature of the piezoelectric speaker may cause the MAX9711 to become unstable.
PAGE 10
3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown MAX9710/MAX9711 Functional Diagrams RF 15kΩ CIN 0.1μF LEFT AUDIO INPUT RIN 15kΩ 1 INL OUTL+ 19 10kΩ 4.5V TO 5.5V SUPPLY 10kΩ 12 VDD PVDD 0.1μF 2,18 2 BIAS CBIAS 1μF OUTL- 17 BIAS 6, 11, 15, 20 PGND OUTR- 9 OUTR+ 7 14 SHDN 4 MUTE 10kΩ 10kΩ CIN 0.1μF RIGHT AUDIO INPUT RIN 15kΩ 5 INR MAX9710 RF 15kΩ PIN NUMBERS SHOWN ARE FOR THE 20 TQFN-EP PACKAGE.
PAGE 11
3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown RF 15kΩ CIN 0.1μF LEFT AUDIO INPUT RIN 15kΩ 2 IN OUT+ 4.5V TO 5.5V SUPPLY 4 10kΩ 10kΩ 8 VDD 0.
PAGE 12
3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown MAX9710/MAX9711 System Diagram VDD (5V) 0.1μF 15kΩ 0.1μF 15kΩ INR VDD PVDD 0.1μF OUTR+ OUTR- MUTE AUX_IN 1μF BIAS MAX9710 1μF OUT SHDN MAX4060 BIAS OUTL- 0.1μF 15kΩ CODEC OUTL+ INL 15kΩ 2.2kΩ VCC 0.1μF IN+ IN- Q IN0.1μF Q MAX961 VDD/2 100kΩ IN+ 100kΩ 0.1μF SHDNL SHDNR 1μF INL VCC (3.
PAGE 13
3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown REVISION NUMBER REVISION DATE 0 4/03 Initial release 1 6/08 Removed TSSOP package DESCRIPTION PAGES CHANGED — 1, 2, 6, 9, 10 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.