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MAX98309/MAX98310

Mono 1.4W Class AB Audio Amplifiers

ELECTRICALCHARACTERISTICS(continued)

(VDD = 3.7V, VGND = 0V, SHDN = VDD, GAIN = VDD (0dB), CBIAS = 0.1µF, CIN = 0.47µF, no load: RIN = RF = 10kI (MAX98309), TA

= TMIN to TMAX. Typical values are at TA = +25°C, unless otherwise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Differential Input Resistance

RINDIFF

MAX98309, SHDN = VDD

1000

kI

MAX98310

GAIN = 0dB

38.2

GAIN = 3dB

31.7

GAIN = 6dB

25.5

Input Bias Current

IINBIAS

MAX98309/MAX98310, SHDN = VDD

Q

1

F

A

Shutdown Input Bias Current

IINBIAS_

SHDN

SHDN = GND, IN_ = VDD or IN_ = GND

-5

+5

F

A

Output Offset Voltage

VOS

TA = +25NC (Note 3)

Q

0.2

Q

1

mV

Click-and-Pop Level

KCP

RL = 8I, 32 samples per

second, A-weighted,

TA = +25NC (Notes 3, 4)

Into shutdown

-66

dBV

Out of shutdown

-66

Common-Mode Bias Voltage

VBIAS

Voltage at BIAS

0.475

x VDD

0.5 x

VDD

0.525

x VDD

V

Input Common-Mode Voltage

Range

VCM

Inferred from CMRR test

0.5

VDD -

0.6

V

Common-Mode Rejection Ratio

CMRR

MAX98310/MAX98310

Guaranteed over

input common-

mode voltage

range

-50

-76

dB

fIN = 1kHz,

RL = 8I + 33FH

-62

Power-Supply Rejection Ratio

PSRR

DC 2.5V to 5.5V

73

93

dB

VRIPPLE = 200mVP-P

(Note 3)

fIN = 217Hz

90

fIN = 1kHz

90

fIN = 10kHz

72

Output Power

POUT

VDD = 3.7V, 1% THD+N

RL = 8I + 68FH

0.750

W

RL = 4I + 33FH

1.2

VDD = 3.7V, 10% THD+N

RL = 8I + 68FH

0.9

RL = 4I + 33FH

1.5

VDD = 5V, 1% THD+N

(Note 5)

RL = 8I + 68FH

1.4

RL = 4I + 33FH,

thermally limited

2.1

VDD = 5V, 10% THD+N

(Note 5)

RL = 8I + 68FH

1.7

RL = 4I + 33FH,

thermally limited

2.7