BA7242 Просмотр технического описания (PDF) - ROHM Semiconductor
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BA7242 Datasheet PDF : 5 Pages
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Multimedia ICs
•Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
VCC
Power dissipation
Pd
7
V
450∗
mW
Operating temperature
Topr
– 20 ~ + 70
°C
Storage temperature
Tstg
– 55 ~ + 125
°C
∗ Reduced by 4.5mW for each increase in Ta of 1°C over 25°C.
(When mounted on a 70mm × 70mm × 1.6mm glass epoxy board.)
•Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
VCC
RIN input level
υRI
GIN input level
υGI
BIN input level
υBI
SCIN input level
υSC
4.5 ~ 5.5
0 ~ 0.7
0 ~ 0.7
0 ~ 0.7
0.45 ~ 0.60
V
VP–P
VP–P
VP–P
VP–P
BA7242F
•Pin descriptions
Pin No.
Pin name
1
BIN
2
GIN
3
RIN
4
VCC1
5
SYNC
6
BFP
7
GND1
8
SCIN
9
NT / PAL
10
COUT
11
GND2
12
VOUT
13
YOUT
14
VCC2
Function
Input for analog B signal. Operate with low impedance.
Input for analog G signal. Operate with low impedance.
Input for analog R signal. Operate with low impedance.
VCC for all except 75Ω driver.
Input for composite SYNC signal. Outputs SYNC signal to VOUT and YOUT pins
when input is LOW.
Input for burst timing signal. Simultaneously performs the burst output and initiates
the pedestal clamp for the RIN, GIN, and BIN input signals when input is LOW.
GND for all except 75Ω driver.
3.58MHz or 4.43MHz pulse signal input.
Video signal output mode setting. HIGH level = NTSC, LOW level = PAL.
Chrominance signal output. Internal 75Ω driver.
GND for 75Ω driver.
Composite video signal output. Internal 75Ω driver.
Luminance signal output. Internal 75Ω driver.
VCC for 75Ω driver.
2
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