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

Mono/Stereo, Class D Amplifier

_______________________________________________________________________________________

7

EFFICIENCY vs. OUTPUT POWER

OUTPUT POWER (W)

50

40

30

20

10

20

30

40

50

60

70

80

90

100

10

060

4

Ω MONO MODE

OUTPUT POWER

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

16

14

12

10

20

30

40

50

60

0

10

18

Ω,

MONO MODE,

10% THD+N

OUTPUT POWER

vs. LOAD RESISTANCE

LOAD RESISTANCE (

Ω)

10

8

6

10

20

30

40

50

60

0

412

MONO MODE,

10% THD+N,

OUTPUT POWER

vs. LOAD RESISTANCE

LOAD RESISTANCE (

Ω)

11

10

9

8

5

10

15

20

25

30

0

712

STEREO MODE,

10% THD+N,

MUTE RESPONSE

MAX9708 toc19

40ms/div

MUTE

5V/div

OUTPUT

50mV/div

SHUTDOWN RESPONSE

MAX9708 toc20

40ms/div

SHDN

5V/div

OUTPUT

50mV/div

Typical Operating Characteristics (continued)

∞, SHDN = high, MONO