Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—5V Supply

(VCC = 5V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF = 10kΩ (MAX971_A/H),

TA = +25°C. CBIAS = 0.1μF, no load. Typical values are at TA = +25°C, unless otherwise noted.) (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.

Supply Voltage (VCC to GND) ..................................-0.3V to +6V

Any Other Pin to GND ...............................-0.3V to (VCC + 0.3V)

IN_, BIAS, SHDM, SHDN,

SHDN Continuous Current ........20mA

OUT_ Short-Circuit Duration to GND or VCC .............Continuous

Continuous Power Dissipation (TA = +70°C)

9-Bump UCSP (derate 5.2mW/°C above +70°C) .......1067mW

10-Pin TDFN (derate 24.4mW/°C above +70°C) ........1951mW

10-Pin μMAX (derate 10.3mW/°C above +70°C) ..........825mW

16-Bump UCSP (derate 8.2mW/°C above +70°C) .....1633mW

16-Pin TQFN (derate 16.9mW/°C above +70°C) ........1349mW

16-Pin TSSOP (derate 21.3mW/°C above +70°C) ......1702mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature .....................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

VCC

2.7

5.5

V

Supply Current

ICC

VIN- = VIN+ = VBIAS, TA = -40°C to +85°C,

per amplifier (Note 2)

5.0

7.5

mA

Shutdown Supply Current

ISHDN

SHDN = SHDM =

SHDN = GND, per amplifier

0.1

1

μA

VIH

0.7 x VCC

SHDN, SHDN, SHDM

Threshold

VIL

MAX9718A/B/C/D

0.3 x VCC

V

VIH

1.4

SHDN, SHDN, SHDM

Threshold

VIL

MAX9718E/F/G/H

0.4

V

AV = 0dB, MAX971_A/H,

MAX971_B/E

±1

±10

AV = 3dB, MAX971_C/F

±1

±15

Output Offset Voltage

VOS

VIN- = VIN+ = VBIAS

AV = 6dB, MAX971_D/G

±1

±20

mV

AV = 0dB, MAX971_B/E

0.5

VCC - 0.5

AV = 3dB, MAX971_C/F

0.5

VCC - 0.6

Inferred from

CMRR test

AV = 6dB, MAX971_D/G

0.5

VCC - 0.8

Common-Mode Input Voltage

VIC

External gain, MAX971_A/H

0.5

VCC - 1.2

V

Input Impedance

RIN

MAX971_B/E, MAX971_C/F, MAX971_D/G

10

15

20

k

Ω

-50

-60

Common-Mode Rejection Ratio

CMRR

fN = 1kHz

-60

dB

f = 217Hz

-93

Power-Supply Rejection Ratio

PSRR

VIN- = VIN+ = VBIAS,

VRIPPLE = 200mVP-P,

RL = 8

Ω, CBIAS = 1μF

f = 1kHz

-90

dB

RL = 8

Ω

0.8

1.1

Output Power

POUT

THD+N = 1%,

fIN = 1kHz (Note 4)

RL = 4

Ω

1.4

W

Total Harmonic Distortion Plus

Noise

THD+N

RL = 8

Ω, fIN = 1kHz, POUT = 0.75W,

VCC = 5V, AV = 6dB (Note 5)

0.002

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