MAX9720 datasheet(7/21 Pages) MAXIM

Part #	MAX9720

Description	50mW, DirectDrive, Stereo Headphone Amplifier with SmartSense and Shutdown

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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50mW, DirectDrive, Stereo Headphone

Amplifier with SmartSense and Shutdown

_______________________________________________________________________________________

7

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

40

30

20

10

0.01

0.1

1

10

100

0.001

050

OUTPUTS

IN PHASE

OUTPUTS

OUT OF

PHASE

VDD = 1.8V

AV = -1.41V/V

f = 1kHz

RL = 16

Ω

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

40

30

20

10

0.01

0.1

1

10

100

0.001

050

OUTPUTS

IN PHASE

OUTPUTS

OUT OF

PHASE

VDD = 1.8V

AV = -1.41V/V

f = 10kHz

RL = 16

Ω

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

25

15

530

20

10

0.01

0.1

1

10

100

0.001

040

35

OUTPUTS

IN PHASE

OUTPUTS

OUT OF

PHASE

VDD = 1.8V

AV = -1.41V/V

f = 20Hz

RL = 32

Ω

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

25

15

530

20

10

0.01

0.1

1

10

100

0.001

040

35

OUTPUTS

IN PHASE

OUTPUTS

OUT OF

PHASE

VDD = 1.8V

AV = -1.41V/V

f = 1kHz

RL = 32

Ω

TOTAL HARMONIC DISTORTION

PLUS NOISE vs. OUTPUT POWER

OUTPUT POWER (mW)

25

15

530

20

10

0.01

0.1

1

10

100

0.001

040

35

OUTPUTS

IN PHASE

OUTPUTS

OUT OF

PHASE

VDD = 1.8V

AV = -1.41V/V

f = 10kHz

RL = 32

Ω

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.3

3.0

2.7

2.4

2.1

20

40

60

80

100

120

140

160

180

200

0

1.8

3.6

fIN = 1kHz

RL = 16

Ω

THD+N = 1%

STEREO

OUT OF

PHASE

STEREO

IN PHASE

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.3

3.0

2.7

2.4

2.1

20

40

60

80

100

120

140

160

180

200

0

1.8

3.6

fIN = 1kHz

RL = 16

Ω

THD+N = 10%

STEREO

OUT OF

PHASE

STEREO

IN PHASE

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.3

3.0

2.7

2.4

2.1

20

40

60

80

100

120

140

160

0

1.8

3.6

fIN = 1kHz

RL = 32

Ω

THD+N = 1%

STEREO

OUT OF

PHASE

STEREO

IN PHASE

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

3.3

3.0

2.7

2.4

2.1

20

40

60

80

100

120

140

160

0

1.8

3.6

fIN = 1kHz

RL = 32

Ω

THD+N = 10%

STEREO

OUT OF

PHASE

STEREO

IN PHASE

Typical Operating Characteristics (continued)

(VDD = 3V, THD+N bandwidth = 22Hz to 22kHz, MODE1 = MODE2 = VDD.)

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