an5290s Panasonic Corporation of North America, an5290s Datasheet - Page 4

• Manufacturer Part Number: an5290s
• Description: Antenna Diversity Ic For On-vehicle Tv
• Manufacturer: Panasonic Corporation of North America

AN5290S
■ Technical Information
4
1. Timing chart 1
Note) The following characteristics are the reference value for design and not guaranteed value. The timing chart is for explaining
• When NTSC reception (in horizontal and vertical synchronization) antenna is selected.
antenna selection is done.
1st field video signal
Horizontal sync. signal
VCO signal
Electric field judgment timing
Noise detection output
signal (pin 20)
Noise detection hold
ANT-1 output
ANT-2 output
ANT-3 output
ANT-4 output
Selected antenna
Output for N.C.
(pin 5)
(internal clock of IC)
(internal clock of IC)
(pin 19)
(pin 16)
(pin 15)
(pin 14)
(pin 13)
(pin 6)
the IC operation plainly. Those vary depending on input condition.
Electric field judgment and antenna selection timing when the change over from ANT-1 to ANT-3 by the
(In the above timing chart, the 1st field video signal is not an internal signal but an
input signal, and some signals which do not outputted to pins, as VCO signal, are
included.)
5H
10.593 µs
(Electric field judgment level)
SDB00011CEB
6H
7H
ANT- 1 2 3 4 3
8H
5.296 µs
21.186 µs
9H