Panasonic AN5636K Datasheet

ICs for TV

AN5636K

SECAM/PAL signal conversion IC

■ Overview

The AN5636K is an IC which converts the SECAM
signal into the quasi-PAL signal. This IC can add the
SECAM signal processing function while rationalizing
the external parts in a joint use with the PAL/NTSC sig­nal processing IC: AN5606K.

■ Features

• Rationalizing IHDL in common use with PAL IHDL

• Lowering 6H line crawling by the quasi-PAL modula-

tion

• For both auto and manual modes of signal processing

■ Applications

• TV (applicable to three systems: PAL/NTSC/SECAM)

26.7±0.3

3° to 15°

1

15

8.6±0.3

10.16±0.25

SDIP030-P-0400

30

Unit: mm

0.5±0.1

0.9±0.25

1.778

16

.1

0

+

5

.0

0

−

0.35

1.0±0.25

3.3±0.254.7±0.25

1

AN5636K ICs for T V

■ Block Diagram

(video)

CC

V

GND (video)

10

12

11

Video amp.

9

7

8

15

6

Ident.

pulse gen.

SECAM chroma

Video out

DL video

ST video

Sand castle pulse

VCC (chroma)

PAL (R − Y)

PAL (B − Y)

4.43 MHz CW

19

20

21
22

24

18

&

switch

SECAM

switch

Carrier

Phase

shifter

16

PAL matrix

PAL color killer

17

ident.

System

priority

PAL

mod.

&

reinsert

Blanking

23

4.43 MHz (chroma)

14

chroma switch

SECAM / SECAM

V. H.

blank

H.

blank

Burst

video switch

SECAM / SECAM

pulse det.

Sandcastle

13

25

Line

switch

26

27

Adder

2

28

R − Y

B − Y

clamp

clamp

pulse

Clamp

gen.

29

black

Artificial

Chroma

level

demod.

gen.

30

Flip flop

amp.

Limiter

1

2

Compo. video

GND (chroma)

5

Ident.

SECAM / SECAM

Ident.

demod.

4

3

ICs for TV AN5636K

■ Pin Descriptions

Pin No. Description

1 GND (chroma-system)
2 SECAM chroma input
3 Limiter feedback
4 Limiter feedback
5 System discrimination holding capacitor
6 Identification pulse fall setting
7 Not SECAM video signal input
8 Sand castle pulse input

9 SECAM video signal input
10 GND (video system)
11 Video signal output
12 Not SECAM chroma signal input
13 VCC (video system)
14 PAL chroma signal output
15 Identification pulse rise setting
16 Direct signal input

Pin No. Description

17 PAL color killer voltage input
18 Delay signal input
19 VCC (chroma system)
20 R−Y signal output
21 Reference bias power supply
22 B−Y signal output

23 System identification voltage output

combined with system forcing switch
24 4.43 MHz CW input
25 Line switch output
26 R−Y clamp capacitance
27 De-emphasis circuit
28 B−Y clamp capacitance
29 Discriminator
30 Discriminator

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage V
Supply current I

2

Power dissipation
Operating ambient temperature
Storage temperature

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

2: Ta = 70°C, Independent IC without a heat sink

*

*

1

*

1

*

CC

CC

P

D

T

opr

T

stg

6.0 V
100 mA
600 mW

−20 to +70 °C

−55 to +150 °C

3