BA7078AF/AS
Multimedia ICs
1/12
Synchronization signal processor for
high definition displays
BA7078AF/AS


The BA7078AF is a synchronization signal processing LSI chip designed for multiscan high-definition displays. It
generates a synchronization signal and clamp pulse for three types of input signals: separate synchronization, composite
synchronization, and synchronization on video.


!Application
CRT displays


!Features
1) Operates on a single 5V power supply, with low power consumption.
2) Synchronization signal existence and polarity detec-tion output.
3) Adjustable clamp pulse width, allowing for the selec-tion of front or back editing.
4) Vertical synchronization separation is based on hori-zontal frequency tracking, for separation starting at 1H.
5) Minimal attached components.


!Absolute maximum ratings (Ta = 25°C)
Power supply voltage
Power dissipation
Storage temperature
Operating temperature
Parameter Symbol Limits Unit
VCC
Pd
V
mW
7.0
450(BA7078AF)
600(BA7078AS)
°C
°C
−25 to +75
−55 to +125
∗1 Reduced by 4.5mW for each increase in Ta of 1°C over 25°C.
∗2 Reduced by 6.0mW for each increase in Ta of 1°C over 25°C.
Topr
Tstg
∗1
∗2



!Recommended operating conditions (Ta = 25°C)
Parameter Symbol Min. Typ. Max. Unit
Power supply voltage VCC 4.5 5.0 5.5 V