(VDD = VCPVDD = 5V, VSGND = VPGND = 0V, C1 = C2 = 1μF, RL = ∞, gain = -1.5V/V, THD+N measurement bandwidth = 22Hz to 22kHz,

TA = +25°C, unless otherwise noted.)

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

FREQUENCY (kHz)

0.1

1

10

0.01

0.1

1

0.001

0.01

100

VDD = 5V

RL = 8Ω

POUT = 25mW

POUT = 60mW

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

FREQUENCY (kHz)

0.1

1

10

0.01

0.1

1

0.001

0.01

100

VDD = 4V

RL = 16Ω

POUT = 25mW

POUT = 75mW

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

FREQUENCY (kHz)

0.1

1

10

0.01

0.1

1

0.001

0.01

100

VDD = 5V

RL = 16Ω

POUT = 50mW

POUT = 100mW

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

FREQUENCY (kHz)

0.1

1

10

0.01

0.1

1

0.001

0.01

100

VDD = 4V

RL = 32Ω

POUT = 25mW

POUT = 70mW

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

FREQUENCY (kHz)

0.1

1

10

0.01

0.1

1

0.001

0.01

100

VDD = 5V

RL = 32Ω

POUT = 50mW

POUT = 125mW

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

50

25

0.1

1

10

0.01

0

75

VDD = 4V

RL = 8Ω

fIN = 10kHz

fIN = 1kHz

fIN = 100Hz

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. FREQUENCY

FREQUENCY (kHz)

0.1

1

10

0.01

0.1

1

0.001

0.01

100

VDD = 4V

RL = 8Ω

POUT = 25mW

POUT = 45mW

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

50

100

25

75

0.1

1

10

0.01

0

125

VDD = 5V

RL = 8Ω

fIN = 10kHz

fIN = 1kHz

fIN = 100Hz

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

50

100

25

75

0.01

0.1

1

10

0.001

0

125

VDD = 4V

RL = 16Ω

fIN = 10kHz

fIN = 1kHz

fIN = 100Hz

MAX13330/MAX13331

Automotive DirectDrive Headphone Amplifiers

with Output Protection and Diagnostics

Maxim Integrated │ 4

www.maximintegrated.com

Typical Operating Characteristics