ICs for TV
1
AN5290S
Antenna diversity IC for on-vehicle TV
n 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.
n Features
• Built-in vertical and horizontal synchronizing circuit
• It outputs changeover pulse for noise canceler.
• Built-in antenna changeover stop function
n Applications
• On-vehicle televisions
SOP024-P-0375A
Unit: mm
n Block Diagram
1
0.4±0.25
0.45
1.27
0.1±0.1
0.3 7.2±0.3
9.4±0.3
0.15
0.925
2.0±0.2
15.3±0.3
2
4
5
6
9
10
11
12
7
8
13
14
15
16
17
18
19
20
21
22
23
24
3
24 23 22 21 20 19 18 17
V
CC
GND
16 15 14 13
1 2 3 4 5 6 7 8 9
10 11 12
1st noise
amp.
2nd noise
amp.
Noise
comparator
ANT
switch driver
ANT
select decoder
ANT
select control
ANT
switch control
ANT
choice
Diversity
On/Off
switch
1/12
divider
Phase
det.
Sync.
control
VCO
Charge
pump
V-sync.
sepa.
Vertical
OSC
Sync.
sepa.
Horizontal
OSC