LA75521VA View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LA75521VA

IF Signal Processing (VIF+SIF) IC that Supports the PAL Video Standard for TV Sets and VCRs

SANYO -> Panasonic 

Package Dimensions

unit : mm (typ)

3287

6.5

24

13

1

12

0.5

0.22

0.15

(0.5)

LA75521VA

1200

1000

Pd max - Ta

Mounted on a specified board:

76.1mm×114.3mm×1.6mm, glass epoxy board

800

600

400

200

0

-20

0

20

40

60

80

100

Ambient T emperature, T a - °C

SANYO : SSOP24(225mil)

System changeover

a. SIF system SW

The SIF system changeover can be made by connecting both/either A (pin 7) and/or B (pin 9) to GND or by keeping

both or either of them OPEN.

A

B

BG

I

DK

MN

FM DET LEVEL

de-emphasis

GND

GND

{

0dB

50μs

GND

OPEN

{

0dB

50μs

OPEN

GND

{

0dB

50μs

OPEN

OPEN

{

6dB

75μs

Note: { indicates that the system is selected.

b. IF system SW

The IF frequency becomes 38.9MHz when pin 10 is open.

The IF frequency changes to 38.0MHz when pin 10 is connected to GND.

This frequency also changes to 39.5MHz when pin 10 is set to VCC.

c. split/inter carrier SW

Inter carrier is selected by connecting the 1st SIF input (pin 13) to GND.

d. Reference frequency changeover SW

The frequency becomes 4.43MHz when pin 11 is open.

The frequency becomes 4.0MHz when 270kΩ is connected between pin 11 and GND.

e. AFT mute level, TRAP point shift

By changing the voltage of pin 15, the potential when AFT is muted and the TRAP point of either “just” or “shift”

(about +220kHz) can be selected.

Pin 15 potential

AFT mute potential

TRAP point shift

VCC to 4V

MIDDLE (VCC/2)

Just

4V to 2.5V

MIDDLE (VCC/2)

Shift

2.5V to 1V

HI (VCC)

Just

1V to GND

HI (VCC)

Shift

* With VCC = 5V

f. When the FM detection function is not used

When the SIF circuit is not used and the FM detection VCO is to be stopped, short-circuit pin 1 - GND with the

resistance of 1kΩ or less.

No.A1004-4/13

Share Link: