1
ICs for TV
AN5385K
Contour correction IC
n Overview
The AN5385K is an IC which conducts contour
correction for luminance signal and color differ-
ence signal. It corresponds to all broadcasting sys-
tems of PAL, NTSC and SECAM. Fewer external
parts enables the TV sets to be less cost and high
picture quality.
n Features
• Black side contour emphasis and white side shoot
elimination circuit are built in (for anti-blooming)
• Transient correction of color difference signal
(color missing improvement)
• Red gamma correction circuit built in
• Wider band of signal processing (Y: 7 MHz/- 3
dB, Color difference: 3 MHz/- 3 dB)
• Delay time is identical for both Y and color
difference.
• Delay amount switch is built in
• Delay line and coupling condenser built in
n Applications
• Color TV, wide TV
Sync chip
clamp
Pedestal
clamp
Pedestal
clamp
Delay
switch
Correction signal
generation, white
side shoot erase
Delay line
Delay line
Delay line
Delay line
Delay line
Delay line
Red gamma
correction
Correction
signal
generation
Correction
signal
generation
15 17
13 21
9 7 5
22
2 3
4
1
6
8
19 10 11 14
YDL YMCO YMGA
POLVSL
VG
A
GND3GND2
GND1
N.C.N.C.
Y
OUT
V
OUT
U
OUT
CTIG
V
CC1
V
CC2
V
CC3
12
16
18
20
V
IN
U
IN
Y
IN
C-pulse
SDIP022-P-0300A
Unit: mm
7.62±0.25
3
to 15

0.35
+0.10
– 0.05
19.1±0.3
111
22 12
6.35±0.30
4.50±0.25
3.45±0.25
1.10±0.25
1.778
0.5±0.1
0.90±0.25
Seating plane
n Block Diagram