LA4743B 查看數據表（PDF） - SANYO -> Panasonic

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LA4743B

45 W Four-Channel (Bridge Circuit) Power Amplifier

SANYO -> Panasonic 

LA4743B

Continued from preceding page.

Pin No. Function DC voltage [V]

Notes

Input amplifier

ST-BY power

supply line

Internal equivalent circuit

11

IN1

12

IN2

14

IN4

15

IN3

• Input amplifiers that require no

3.1

capacitor in the input noise filter.

13

PRE GND

30 kΩ

VREF

100 Ω

11

12

14

15

Bias circuit

power supply line

5 pF

1 kΩ

Inverter

amplifier

A13507

20 kΩ

VREF

16 ON TIME MUTE 2.6

• Amplifier turn-on time control circuit

• Impulse noise prevention circuit

200 Ω

• With a 22 µF capacitor, the turn-on 16

time will be 0.6 s.

2 kΩ

40 kΩ

10 kΩ

2 kΩ

13 kΩ

Input amplifier

ST-BY power

supply line

3 kΩ

A13508

1 kΩ

22

MUTE

4.1

• The muting function is activated when

the applied voltage is under 1 V.

VREF

Amplifier

bias circuit

25

N.C.

7.5 kΩ 10 kΩ

100 Ω

22

100 kΩ

VREF

A13509

No. 6630-5/9

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