LA7567NM 데이터 시트보기 (PDF) - SANYO -> Panasonic

부품명

상세내역

일치하는 목록

LA7567NM

TV and VCR VIF/SIF IF Signal-Processing Circuit with PAL/NTSC Multi-Format Audio Support

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

Pin

LA7567N, 7567NM

Description

• First SIF AGC filter connection.

This IC adopts an average value AGC technique. The first

SIF conversion gain is about 30 dB, and the AGC range is

over 50 dB. A 0.01 µF capacitor is normally used in filter

16

1st SIF AGC FILTER

connected to this pin.

• When used in an intercarrier system:

Connect this pin (pin 16) to ground. The IC internal switch

will operate to connect the intercarrier output to the SIF

converter input.

Equivalent circuit

• IF AGC filter connection

The signal peak-detected by the built-in AGC detector is

converted to the AGC voltage at pin 17. Additionally, a

17

IF AGC FILTER

second AGC filter (a lag-lead filter) used to create the dual

time constants is provided internally in the IC.

Use a 0.022-µF capacitor as the external capacitor, and

adjust the value according to the sag, AGC speed, and

other characteristics.

• VIF amplifier input.

18

19

VIF input

The input circuit is a balanced circuit, and the input circuit

constants are:

R ≈ 1.5 kΩ

C ≈ 3 pF

20

GND

Continued on next page.

No. 5765-11/14

Share Link: