LA1787M Просмотр технического описания (PDF) - ON Semiconductor

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производитель

LA1787M

Monolithic Linear IC Single-Chip Tuner IC for Car Radios

ON Semiconductor 

Continued from preceding page.

Pin No.

Function

LA1787M

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

2µA

VCC

C2

27

100Ω

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.

VREF

A13571

28

A13572

VREF

32

29

+

1µF

A13573

Continued on next page.

No. 6655-11/54

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