MAX9708 datasheet(5/24 Pages) MAXIM

Part #	MAX9708

Description	20W/40W, Filterless, Spread-Spectrum, Mono/Stereo, Class D Amplifier

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Manufacturer	MAXIM [Maxim Integrated Products]

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20W/40W, Filterless, Spread-Spectrum,

Mono/Stereo, Class D Amplifier

_______________________________________________________________________________________

5

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

OUTPUT POWER PER CHANNEL (W)

25

20

15

10

5

0.1

1

10

100

0.01

030

PVDD = 18V, 8

Ω

STEREO MODE, 1kHz

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

OUTPUT POWER PER CHANNEL (W)

10

5

0.1

1

10

100

0.01

015

PVDD = 12V,

STEREO MODE,

fIN = 1kHz

RL = 8

Ω

RL = 4

Ω

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. FREQUENCY

FREQUENCY (Hz)

10k

1k

100

0.1

10

100k

1

0.01

PVDD = 18V,

8

Ω STEREO MODE,

POUT = 8.3W PER

CHANNEL

EFFICIENCY vs. OUTPUT POWER

OUTPUT POWER PER CHANNEL (W)

25

20

15

10

5

20

30

40

50

60

70

80

90

100

10

030

PVDD = 18V, 8

Ω

STEREO MODE

OUTPUT POWER

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

16

14

12

5

10

15

20

25

30

0

10

18

RL = 8

Ω

STEREO MODE

10% THD+N

1% THD+N

NO-LOAD SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

20

18

16

14

12

14

16

18

20

22

24

10

22

STEREO MODE

TA = +25

°C

TA = +85

°C

TA = -40

°C

Typical Operating Characteristics

(PVDD = VDD = +18V, PGND = GND = 0V, CSS = 0.47µF, CREG = 0.01µF, C1 = 0.1µF, C2 = 1µF, RLOAD =

∞, SHDN = high, MONO

= low, MUTE = high, G1 = low, G2 = high, FS1 = FS2 = high (SSM), SYNCIN = low. All load resistors (RL) are between OUT_+ and

OUT_-, TA = +25°C, unless otherwise stated.)

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

20

18

12

14

16

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0

10

22

SHDN = 0

TOTAL HARMONIC DISTORTION PLUS NOISE

vs. OUTPUT POWER

OUTPUT POWER (W)

50

40

30

20

10

0.1

1

10

100

0.01

060

PVDD = 18V, 4

Ω MONO MODE,

1kHz

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