AN5290 데이터 시트보기 (PDF) - Panasonic Corporation

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AN5290

Antenna diversity IC for on-vehicle TV

Panasonic Corporation 

ICs for TV

AN5290S

Antenna diversity IC for on-vehicle TV

s Overview

The AN5290S is an on-vehicle television antenna-

diversity IC in which the noise detection circuit and an-

tenna changeover circuit are integrated on a single chip.

It is destined for NTSC/PAL system.

s Features

• Built-in vertical and horizontal synchronizing circuit

• It outputs changeover pulse for noise canceler.

• Built-in antenna changeover stop function

s Applications

• On-vehicle televisions

Unit: mm

1

24

2

23

3

22

4

21

5

20

6

19

7

18

8

17

9

16

10

15

11

14

12

13

0.3

7.2±0.3

9.4±0.3

SOP024-P-0375A

s Block Diagram

1st noise

amp.

2nd noise

amp.

ANT

choice

Noise

comparator

Diversity

On/Off

switch

ANT

select control

ANT

switch driver

ANT

select decoder

Sync.

sepa.

Sync.

control

Horizontal

OSC

ANT

switch control

Vertical

OSC

Phase

det.

1/12

divider

V-sync. Charge

sepa. pump

VCO

1

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