LA4820M 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LA4820M

Monaural Speaker/Stereo Headphone Power Amplifier

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

7

Pin Name

PRE GND

8

VREF

LA4820M

Pin Voltage

2.8

Internal equivalent circuit

9

VREFREF

VREF

2.8

Remarks

c Connects small-signal block to

GND.

c Virtual ground bias pin.

c Impedance is lowered by VREF

amplifier. (ro = 10 Ω or less)

c VREF voltage is determined by

the following formula:

VREF = VCC2 voltage (pin 22) (V)

2

c LPF pin for VREF amplifier

reference bias.

10

REF

5.1

11

PWRC CONT

0.8

12

DET OUT

0.5 to 1.0

c LPF pin for internal ripple filter

reference bias.

c Voltage of VCC2 − 0.4 V.

c HzP Power is such that the

common amplifier turns off and

the output common capacitor

mode is entered when pin 11 is

pulled down.

c PVSS, output limiter,

non-clipping circuit ALC

rectification pin.

c The attack and recovery time

are determined by the external

capacitance and resistance.

Continued on next page.

No.5205-8/20

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