MAX9728B datasheet(4/19 Pages) MAXIM

4 / 19 page

60mW, DirectDrive, Stereo Headphone

Amplifiers with Shutdown

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100

020

100

0.1

0.01

0.001

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

VDD = 5V

RL = 16

fIN = 1kHz

fIN = 20Hz

fIN = 10kHz

100

020

120

0.1

0.01

0.001

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

100

VDD = 5V

RL = 32

fIN = 1kHz

fIN = 20Hz

fIN = 10kHz

100

10k

100k

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. FREQUENCY

FREQUENCY (Hz)

0.1

0.001

0.01

VDD = 5V

RL = 16

POUT = 20mW

POUT = 37mW

100

10k

100k

TOTAL HARMONIC DISTORTION PLUS

NOISE vs. FREQUENCY

FREQUENCY (Hz)

0.1

0.001

0.01

VDD = 5V

RL = 32

POUT = 50mW

POUT = 30mW

4.5

5.0

5.5

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

fIN = 1kHz

RL = 16

THD+N = 1%

THD+N = 10%

100

120

4.5

5.0

5.5

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

fIN = 1kHz

RL = 32

THD+N = 1%

THD+N = 10%

Typical Operating Characteristics

(VDD = 5V, PGND = SGND = 0V, SHDN = VDD, C1 = C2 = 1µF, RL =

∞, gain = -1.5V/V (RIN = 20kΩ, RF = 30kΩ for the MAX9728A),

THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, TA = +25°C, unless otherwise noted.)

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