AN7118S Просмотр технического описания (PDF) - Panasonic Corporation

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AN7118S

Low Voltage Dual 35mW Audio Power Amplifier Circuits (BTL 300mW)

Panasonic Corporation 

ICs for Audio Common Use

s Application Circuit

AN7118S Dual Circuit

Ch.1

Input

Ch.2

Input

– 22µF

N.C +

376

68pF

5

9

8

10

AN7118S

47µF

+–

4

2

1

11

17

16 12 13 14 18 15

N.C +

+

+–

– 22µF 68pF – 220µF 47µF

VCC

–

220µF

+

470µF

+–

0.01µF

SP

4.7Ω

470µF

+–

4.7Ω

SP

AN7118S

s Characteristics Curve

PD – Ta

1200

1000

800

600

400

200

0

0

20

40

60

80

Ambient Temperature Ta (˚C)

s Supplementary Explanation of IC Characteristics

• Not necessary for input coupling capacitor. Input electric potential is about 0 bias, using PNP Tr for input stage.

• One chip dual amp. (Stereo operation)

• Battery operation is possible at 1.8V to 4.5V

• Decreased voltage operation is available, and suitable for a long battery operation.

• Load impedance can be driven from 4Ω, which makes it possible to use for both speaker and headphone.

• Small shock noise at power ON and OFF.

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