LA1787M 查看數據表（PDF） - SANYO -> Panasonic

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LA1787M

Single-Chip Tuner IC for Car Radios

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

Function

LA1787M

Description

Equivalent circuit

8

Noise AGC sensitivity

9

AGC adjustment

After setting up the medium field

(about 50 dBµ) sensitivity with the

noise sensitivity setting pin (pin 8),

set the weak field (about 20 to

30 dBµ) sensitivity with the AGC

adjustment pin (pin 9)

11

12

Memory circuit connection

Recording circuit used during

noise canceller operation.

3kΩ

15kΩ

3kΩ

200Ω

8

3kΩ

0.01µF

1MΩ

9

+

0.47µF

A13559

0.01µF

6800pF

3.9kΩ

13

12

11

VCC

Differential

amp

Gate

circuit

13

Pilot input

Pin 13 is the PLL circuit input pin.

14

N.C, MPX, MRC, GND

Ground for the N.C., MPX, and

MRC circuits.

LPF

30kΩ

N.C

12

13

0.01µF

A13560

VCC

PLL

A13561

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No. 6655-7/54

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