LA1780 データシートの表示（PDF） - SANYO -> Panasonic

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LA1780

Single-Chip Tuner IC for Car Radios

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

Function

LA1780M

Description

27

MRC control voltage time

constant

The MRC detector time constant

is determined by a 1-kΩ resistor

and C2 when discharging and by

the 7-µA current and C2 when

charging.

Equivalent circuit

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.

MRC input

Continued on next page.

No. 5724-12/38

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