MAXIM MAX9710, MAX9711 Technical data

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 sup­plies without additional, costly power-supply condition­ing. 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 VOS(minimizing DC current drain
through the speakers), low 7mA supply current, and a

0.5µA shutdown mode. A MUTE function allows the out­puts to be quickly enabled or disabled.

These devices include thermal overload protection, are
specified over the extended -40°C to +85°C tempera­ture range, and are supplied in thermally efficient pack­ages. 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

1

Ordering Information

19-2841; Rev 1; 6/08

EVALUATION KIT

AVAILABLE

PART

TEMP RANGE

PIN-PACKAGE

AMP

MAX9710ETP

Stereo

MAX9711ETC

Mono

MAX9710

TQFN

1INL

2BIAS

3N.C.

4MUTE

5INR

6

PGND

7

OUTR+

8

PV

DD

9

OUTR-

10

N.C.

11 PGND

12 V

DD

13 N.C.

14

15 PGND

16

N.C.

17

OUTL-

18

PV

DD

19

OUTL+

20

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.

-40°C to +85°C

-40°C to +85°C

20-Thin QFN-EP*

12-Thin QFN-EP*

MAX9710/MAX9711

3W Mono/Stereo BTL Audio Power Amplifiers
with Shutdown

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD= PVDD= 5.0V, V

GND

= V

PGND

= V

MUTE

= 0V, V

SHDN

= 5V, RIN= RF= 15kΩ, RL= ∞. TA= T

MIN

to T

MAX

, unless otherwise

noted. Typical values are at T

A

= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 2: PSSR is specified with the amplifier inputs connected to GND through R

IN

and CIN.

V

DD

to GND, PGND ...............................................................+6V

PV

DD

to VDD.......................................................................±0.3V

PGND to GND.....................................................................±0.3V

All Other Pins to GND.................................-0.3V to (V

DD

+ 0.3V)

Continuous Input Current (into any pin

except power supply and output pins).........................±20mA

Continuous Power Dissipation (T

A

= +70°C)

12-Pin Thin QFN (derate 16.9mW/°C above +70°C) ....1349mW

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage Range VDD/PVDDInferred from PSRR test 4.5 5.5 V

Quiescent Supply Current
(I

VDD

+ I

PVDD

)

Shutdown Supply Current I

Turn-On Time t

Thermal Shutdown Threshold 160 °C

Thermal Shutdown Hysteresis 15 °C

OUTPUT AMPLIFIERS

Output Offset Voltage V

Power-Supply Rejection Ratio PSRR

Total Harmonic Distortion Plus
Noise

Signal-to-Noise Ratio SNR RL = 8Ω, V

Slew Rate SR 1.6 V/µs

Maximum Capacitive Load Drive C

Crosstalk fIN = 10kHz 77 dB

BIAS VOLTAGE (BIAS)

BIAS Voltage V

Output Resistance R

DIGITAL INPUTS (MUTE, SHDN)

Input Voltage High V

Input Voltage Low V

Input Leakage Current I

I

DD

SHDN

ON

OS

OUT

THD+N

L

BIAS

BIAS

IH

IL

IN

MAX9710 12 30

MAX9711 7 17
SHDN = GND 0.5 30 µA

C

= 1µF (10% of final value) 300

BIAS

C

= 0.1µF (10% of final value) 30

BIAS

V

V

OUT_+

RIPPLE

- V

OUT_-

= 200mV

(Note 2)

fIN = 1kHz,
THD+N < 1%

f

= 1kHz, BW =

IN

22Hz to 22kHz

OU T

No sustained oscillations 1 nF

, AV = 2 ±2 ±14 mV

VDD = 4.5V to 5.5V 82 100

P-P

f = 1kHz 87

f = 20kHz 74

RL = 8Ω 1.1 1.4

RL = 4Ω 2.6Output Power P

= 3Ω 3

R

L

P

= 1.2W, RL = 8Ω 0.005

OUT

P

= 2W, 4Ω 0.01

OUT

= 2.8V

, BW = 22H z to 22kH z95 dB

RM S

2.35 2.5 2.65 V

50 kΩ

2V

0.8 V

±1µA

mA

ms

dB

W

%

MAX9710/MAX9711

3W Mono/Stereo BTL Audio Power Amplifiers

with Shutdown

_______________________________________________________________________________________ 3

Typical Operating Characteristics

(VDD= 5V, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

1

0.1

P

= 500mW

OUT

THD+N (%)

0.01

P

= 2.5W

OUT

0.001
10 100k

FREQUENCY (Hz)

10k1k100

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

1

0.1

THD+N (%)

0.01

P

OUT

= 250mW

RL = 4Ω
A

RL = 3Ω

= -2V/V

A

V

= -4V/V

V

MAx9710/11 toc01

MAx9710/11 toc04

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

1

0.1

THD+N (%)

0.01

0.001
10 100k

P

= 500mW

OUT

P

= 2.5W

OUT

FREQUENCY (Hz)

10k1k100

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

1

0.1

P

= 250mW

THD+N (%)

0.01

OUT

RL = 3Ω

= -4V/V

A

V

RL = 8Ω

= -2V/V

A

V

MAx9710/11 toc02

MAx9710/11 toc05

TOTAL HARMONIC DISTORTION PLUS NOISE

1

0.1

THD+N (%)

0.01

0.001

TOTAL HARMONIC DISTORTION PLUS NOISE

1

0.1

THD+N (%)

0.01

vs. FREQUENCY

RL = 4Ω

= -2V/V

A

V

P

= 250mW

OUT

P

= 2W

OUT

10 100k

FREQUENCY (Hz)

10k1k100

vs. FREQUENCY

RL = 8Ω

= -4V/V

A

V

P

= 250mW

OUT

MAx9710/11 toc03

MAx9710/11 toc06

P

= 2W

OUT

0.001
10 100k

FREQUENCY (Hz)

10k1k100

TOTAL HARMONIC DISTORTION PLUS NOISE

0.001
10 100k

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

AV = -2V/V

= 3Ω

R

L

10

1

THD+N (%)

0.1

0.01

f = 1kHz

0.001
04

f = 20Hz

f = 10kHz

321

OUTPUT POWER (W)

MAX9710/11 toc07

100

AV = -4V/V

= 3Ω

R

L

10

1

THD+N (%)

0.001

f = 1kHz

0.1

0.01

f = 20Hz

04

P

= 1.2W

OUT

FREQUENCY (Hz)

vs. OUTPUT POWER

f = 10kHz

OUTPUT POWER (W)

P

= 1.2W

OUT

0.001

10k1k100

10 100k

FREQUENCY (Hz)

10k1k100

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

AV = -2V/V

= 4Ω

R

L

10

MAX9710/11 toc08

1

THD+N (%)

0.1

f = 1kHz

0.01

0.001

321

0 3.5

f = 10kHz

f = 20Hz

2.5 3.01.5 2.01.00.5

OUTPUT POWER (W)

MAX9710/11 toc09

MAX9710/MAX9711

3W Mono/Stereo BTL Audio Power Amplifiers
with Shutdown

4 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VDD= 5V, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

AV = -4V/V

= 4Ω

R

L

10

1

THD+N (%)

0.01

0.001

f = 1kHz

0.1

0 3.5

f = 10kHz

f = 20Hz

2.5 3.01.5 2.01.00.5

OUTPUT POWER (W)

MAX9710/11 toc10

THD+N (%)

0.001

OUTPUT POWER

vs. TEMPERATURE

4

THD+N = 10%

3

2

OUTPUT POWER (W)

1

0

THD+N = 1%

f = 1kHz

= 3Ω

R

L

-40 85
TEMPERATURE (°C)

603510-15

MAX9710/11 toc13

OUTPUT POWER (W)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

AV = -2V/V

= 8Ω

R

L

10

1

0.1

0.01

f = 20Hz

0

f = 10kHz

f = 1kHz

OUTPUT POWER (W)

1.5 2.01.00.5

OUTPUT POWER

vs. TEMPERATURE

4

THD+N = 10%

3

THD+N = 1%

2

1

f = 1kHz

= 4Ω

R

L

0

-40 85
TEMPERATURE (°C)

603510-15

MAX9710/11 toc11

THD+N (%)

0.001

MAX9710/11 toc14

OUTPUT POWER (W)

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

100

AV = -4V/V

= 8Ω

R

L

10

1

0.1

0.01

0

f = 10kHz

f = 1kHz

f = 20Hz

OUTPUT POWER (W)

1.5 2.01.00.5

OUTPUT POWER

vs. TEMPERATURE

2.0

THD+N = 10%

1.5

THD+N = 1%

1.0

0.5

f = 1kHz

= 8Ω

R

L

0

-40 85
TEMPERATURE (°C)

603510-15

MAX9710/11 toc12

MAX9710/11 toc15

OUTPUT POWER vs. LOAD RESISTANCE

(FORCED-AIR COOLING)

5

4

3

2

OUTPUT POWER (W)

1

0

1 1000

THD+N = 10%

THD+N = 1%

10010

LOAD RESISTANCE (Ω)

VDD = 5V
f = 1kHz

1.6

1.4

MAX9710/11 toc16

1.2

1.0

0.8

0.6

POWER DISSIPATION (W)

0.4

0.2

0

POWER DISSIPATION

vs. OUTPUT POWER

RL = 4Ω
f = 1kHz

0 2.5

OUTPUT POWER (W)

2.01.50.5 1.0

0.8

0.7

MAX9710/11 toc17

0.6

0.5

0.4

0.3

POWER DISSIPATION (W)

0.2

0.1

0

POWER DISSIPATION

vs. OUTPUT POWER

0 1.501.25

OUTPUT POWER (W)

MAX9710/11 toc18

RL = 8Ω
f = 1kHz

1.000.750.25 0.50