LA1781M(2001) 查看數據表（PDF） - SANYO -> Panasonic

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LA1781M
(Rev.:2001)

Single-Chip Tuner IC for Car Radios

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

Function

LA1781M

Description

27

MRC control voltage time

constant

The MRC detector time constant

is determined by a 100 Ω resistor

and C2 when discharging and by

the 2-µA current and C2 when

charging.

Equivalent circuit

VCC

2 µA

VCC

C2

27

100 Ω

Pin 28

28

SNC control input

The sub-output is controlled by a

0 to 1-V input.

29

HCC control input

The high band frequency output is

controlled by a 0 to 1-V input.

It can also be controlled by the

MRC output.

Use a resistor of at least 100 kΩ

when controlling with the pin 32

FM S-meter signal.

A11727

VREF

28

A11728

VREF

32

1 µF

29

+

A11729

Continued on next page.

No. 6038-11/50

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