LA4919N 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LA4919N

Two-Channel 10W BTL High-Efficiency TV Audio Output Power Amplifier

SANYO -> Panasonic 

Block Diagram

LA4919N

HP IN1 1

HP IN2 2

Headphone block

Ripple filter

VG=6dB

VG=6dB

Voltage

regulator

VCC

28 HP OUT1

27 HP OUT2

HP D.C 3

HP Standby 4

AMP Standby 5 AMP Standby SW

D.C 6

Ripple filter

DDL 7

ON TIME

8

Muting circuit

used at power on

H/P Standby SW

Output

amplifier A

26 POWER GND

25 OUT2-

Nonlinear

amplifier

B

24 OUT2+

Output

amplifier

23 SW GND

Switching regulator block

H.L.S

ABCD

* H.L.S

Higher

Level signal

Selector

Switching

drive

22 SWB

21 SWE

IN2 9

PRE GND 10

Input

amplifier

Headphone stage

Input amplifier stage

Switching regulator stage

20 SW OUT

19 VCC

PRE VCC 11

IN VREF 12

Output amplifier stage

REF

amplifier

IN1 13

POWER GND 14

Input

amplifier

Power TR stage

18

17

Output

amplifier C

Nonlinear

amplifier

16 OUT1+

D

Output

amplifier

15 OUT1-

No.A0323-4/6

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