BA7078AF Datasheet, PDF (1/13 Pages) Rohm – Synchronization signal processor for high definition displays

Multimedia ICs
BA7078AF/AS
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)
Parameter
Symbol
Limits
Unit
Power supply voltage
Power dissipation
VCC
7.0
∗1 _{450(BA7078AF)}
Pd
∗2 _{600(BA7078AS)}
Operating temperature
Topr
−25 to +75
Storage temperature
Tstg
−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.
V
mW
°C
°C
!Recommended operating conditions (Ta = 25°C)
Parameter
Symbol Min. Typ. Max. Unit
Power supply voltage
VCC
4.5 5.0 5.5
V
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