Panasonic AN5290S Datasheet

ICs for TV

AN5290S

Antenna diversity IC for on-vehicle TV

■ Overview

The AN5290S is an on-vehicle television antenna­diversity IC in which the noise detection circuit and an­tenna changeover circuit are integrated on a single chip.
It is destined for NTSC/PAL system.

■ Features

• Built-in vertical and horizontal synchronizing circuit

• It outputs changeover pulse for noise canceler.

• Built-in antenna changeover stop function

■ Applications

• On-vehicle televisions

■ Block Diagram

24

23

22

21

20

19

18

17

Unit: mm

14

24
23
22
21
20
19
18
17
16
15
14
13

0.15

0.925

15.3±0.3

2.0±0.2

13

1
2
3
4
5

0.4±0.25 0.451.27

6
7
8

9
10
11
12

0.1±0.1

0.3

CC

V

7.2±0.3

9.4±0.3

SOP024-P-0375A

16

15

1st noise

amp.

Sync.

sepa.

1

ANT

choice

2

2nd noise

amp.

Sync.

control

Horizontal

3

OSC

4

Noise

comparator

select control

switch control

5

Diversity

On/Off

switch

ANT

ANT

switch driver

ANT

select decoder

11

1/12

divider

VCO

12

ANT

Phase

det.

Vertical

OSC

6

7

V-sync.

sepa.

8

Charge

pump

9

10

GND

1

AN5290S ICs for T V

■ Pin Descriptions

Pin No. Description

1 Antenna selection level holding capacitance
2 Sync. separation video signal input
3 Horizontal sync. signal AFC output
4 Horizontal sync. signal oscillation time-

constant setting

5 Horizontal sync. signal output
6 Output for noise canceler
7 Vertical sync. signal output
8 GND
9 Vertical sync. signal separation time constant

setting

10 Vertical sync. signal oscillation time constant

setting

11 Charge pump integral time-constant setting

Pin No. Description

12 VCO oscillation time-constant setting
13 Antenna selection output 4
14 Antenna selection output 3
15 Antenna selection output 2
16 Antenna selection output 1
17 Power supply
18 Noise comparator level setting/diversity off
19 Noise level hold capacitor
20 Noise comparator input
21 2nd noise amplifier output
22 Video clamp input
23 1st noise amplifier output
24 Video signal input

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage V
Supply current I
Power dissipation

*

Operating ambient temperature T
Storage temperature T

Note) 1. Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25°C.

2. In order to protect the IC, do not use the IC by rotating it 180 degrees.

3. To protect the IC, do not connect the open collector pins (pin 5, pin 6, pin 7, pin 13, pin 14, pin 15 and pin 16) directly to

the power supply. Use the protection resistors (1 kΩ or larger for pin 5, pin 6 and pin 7, and 200 Ω or larger for pin 13, pin
14, pin 15 and pin 16). Use the IC within the range of its power dissipation.

: Ta = 80 °C.

4. *

CC

CC

P

D

opr

stg

5.6 V

30.0 mA
168 mW

−30 to +80 °C

−55 to +125 °C

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage V

CC

4.5 to 5.5 V

2