MAX9820ETB+ datasheet(5/13 Pages) MAXIM

Part #	MAX9820ETB+

Description	DirectDrive Headphone Amplifier with External Gain

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Manufacturer	MAXIM [Maxim Integrated Products]

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

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DirectDrive Headphone Amplifier

with External Gain

_______________________________________________________________________________________

5

THD+N vs. FREQUENCY

FREQUENCY (Hz)

10,000

1000

100

10

100,000

0.01

0.1

1

10

0.001

VDD = 3.6V

RLOAD = 16

I

LLOAD = 1

FH

POUT = 20mW

POUT = 10mW

THD+N vs. FREQUENCY

FREQUENCY (Hz)

10,000

1000

100

10

100,000

0.01

0.1

1

10

0.001

VDD = 3.6V

RLOAD = 32

I

LLOAD = 1

FH

POUT = 30mW

POUT = 10mW

VISTA THD+N vs. FREQUENCY

FREQUENCY (Hz)

10,000

1000

100

-100

-80

-60

-40

-20

0

-120

10

100,000

VDD = 5.0V

RLOAD = 32

I

LLOAD = 1

FH

VOUT = -3dBFS

FS = 300mVRMS

FS = 1VRMS

VISTA THD+N vs. FREQUENCY

FREQUENCY (Hz)

10,000

1000

100

-100

-80

-60

-40

-20

0

-120

10

100,000

VDD = 5.0V

RLOAD = 10k

I

LLOAD = 1µH

VOUT = -3dBFS

FS = 707mVRMS

FS = 1VRMS

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.1

4.7

4.3

3.9

3.5

3.1

30

60

90

120

150

180

0

2.7

5.5

RLOAD = 16

I

LLOAD = 1µH

THD+N = 10%

THD+N = 1%

OUTPUT POWER vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.1

4.7

4.3

3.9

3.5

3.1

30

60

90

120

150

180

0

2.7

5.5

RLOAD = 32

I

LLOAD = 1µH

THD+N = 10%

THD+N = 1%

Typical Operating Characteristics

(VDD = VSHDN = 5V, VGND = 0V, RIN = RFB = 40.2kΩ (gain = -1V/V), C1 = C2 = 1µF, C3 = 10µF, RLOAD = ∞. Typical values are at TA

= +25°C, unless otherwise noted.)

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