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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)

Note2: All specifications are 100% tested at TA = +25°C; temperature limits are guaranteed by design.

Note3: Inputs AC-coupled to GND.

Note4: Mode transitions controlled by SHDN.

Note5: Thermally limited by package.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Total Harmonic Distortion Plus

Noise

THD+N

fIN = 1kHz, BW = 22Hz to

22kHz

RL = 8I + 68FH,

POUT = 375mW

0.008

%

RL = 4I + 33FH,

POUT = 750mW

0.06

0.02

fIN = 6kHz, BW = 22Hz to

22kHz

RL = 8I + 68FH,

POUT = 375mW

0.01

Signal-to-Noise Ratio

SNR

A-weighted, VDD = 5V, POUT = 1.4W,

RL = 8I + 33FH

110

dB

Output Noise Voltage

VN

A-weighted (Note 3)

9

F

V

Overcurrent Protection

Threshold

2

A

Thermal-Protection Threshold

+160

N

C

Thermal-Protection Hysteresis

15

N

C

Maximum Capacitive Load

Drive

CL

Bridge-tied load capacitance

500

pF

LOGICINPUT(SHDN,TON)(MAX98309)

Input Logic-High

VIH

1.8V logic compliant

1.4

V

Input Logic-Low

VIL

1.8V logic compliant

0.4

V

Input Leakage Current High

IIH

TA = +25NC

1

F

A

Input Leakage Current Low

IIL

TA = +25NC

1

F

A