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BA7078AS Datasheet

  • BA7078AS

  • Synchronization signal processor for high definition display...

  • 13頁(yè)

  • ROHM

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BA7078AF/AS
Multimedia ICs
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擄C)
Parameter
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
鈭?/div>
1
Limits
7.0
450(BA7078AF)
600(BA7078AS)
鈭?5
to
+75
鈭?5
to
+125
鈭?/div>
2
Unit
V
mW
擄C
擄C
Pd
Topr
Tstg
鈭?/div>
1 Reduced by 4.5mW for each increase in
Ta of 1擄C over 25擄C.
鈭?/div>
2 Reduced by 6.0mW for each increase in
Ta of 1擄C over 25擄C.
!
Recommended operating conditions
(Ta = 25擄C)
Parameter
Power supply voltage
Symbol
V
CC
Min.
4.5
Typ.
5.0
Max.
5.5
Unit
V
1/12

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