Maxim MAX9777 Manuel d'utilisateur télécharger pdf (Page 10)

MAX9777/MAX9778

Stereo 3W Audio Power Amplifiers with

Headphone Drive and Input Mux

____________________________________________________________________________________________________________________________________________________________________________

Typical Operating Characteristics (continued)

= PV

= 5V, GND = PGND = 0V, V

SHDN

= 5V, C

BIAS

= 1µF, T

= +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(HEADPHONE MODE)

MAX9777/78 toc40

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

5.255.004.75

4.50 5.50

= +85°C

= +25°C

= -40°C

POWER DISSIPATION vs. OUTPUT POWER

(SPEAKER MODE)

MAX9777/78 toc42

OUTPUT POWER (W)

POWER DISSIPATION (W)

1.500.25 0.50 0.75 1.00 1.25

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

= 8Ω

f = 1kHz

EXITING POWER-DOWN

(SPEAKER MODE)

MAX9777/78 toc43

100ms/div

OUT_+ AND OUT_-

1V/div

OUT_+ - OUT_-

1V/div

2V/div

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(HEADPHONE MODE)

MAX9777/78 toc40

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

5.255.004.75

4.50 5.50

= +85°C

= +25°C

= -40°C

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 26 27

MAX9777/MAX9778 10
Headphone Drive and Input Mux 10

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Maxim MAX9777 Manuel d'utilisateur Page 10

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