n Overview
The AN5138NK is an integrated circuit designed for
video-IF and audio-IF processing circuits, in color TV and
VCR.
n Features
• By adopting built-in VCO PLL-type video-detector cir-
cuit, the high preformance IC-detector system can be
realized for sound multiplex and tele-text broadcasting.
• Quadrature sound FM detector built-in.
• Frequency characteristics compensation pin (Pin20)
VCR-switch pin (Pin5)
• Sound-output level-adjustment pin (Pin25)
1
ICs for TV
AN5138NK
Video IF Amplifier, PLL Detector, AGC, AFC, SIF IC for Color TV
1
2
3
4
5
6
7
8
9
10
11
12
13
14
19
18
17
16
15
20
21
22
23
24
25
26
27
28
26.7
–
0.3
8.4– 0.3
10.16– 0.25
3 to 15˚
0.3
+ 0.1
– 0.05
4.8– 0.25
1.05– 0.25
3.05– 0.25
1.778
0.5
–
0.1
0.9
–
0.25
Unit : mm
28-Pin Shrunk DIL Plastic Package
25 24 23 22 21 20 19 18
17
16
15
14
13
12
1110987654
2
3
1
28
27
26
+
–
+
–
Audio Level Adj.
SIF
Filter
Level
Adj.
VIF
Amp.
FM
Det.
SIF
Amp.
VTR
SW
Video
Det.
Noise
Inverter
Video
Inverter
VCO
APC
Det.
SIF
Trap
Video Output
AFC
Lock
Det.
IF
AGC
RF
AGC
Audio
Output
IF
Input
VTR SW
AFC
SW
AFC
Out.
VCC
V
CC
VCC
IF
AGC
Filter
RF
AGC
Out.
RF
AGC
Delay
Adj.
n Block Diagram