MM1068 Datasheet, PDF (5/5 Pages) Mitsumi Electronics, Corp. – No-adjustment Sync Separator Monolithic IC

MITSUMI
No-adjustment Sync Separator MM1068
Application Circuits
There is a momentary phase lag in the H. SYNC output vertical feedback interval. When using this IC for OSD
timing, characters at the top of the screen may bend due to IC deviation. If this happens, change the
resistance between Pins 13 and 14 as shown, and the bending will improve by several H from the top edge of
the screen.
Application Circuit 1
Application Circuit 2
* ^{Note 1 : 1. 1}
X
R1
R2
C1
C2
NTSC
PAL
CSB503F2
CSB500F40
1.5kΩ
1.8kΩ
390Ω
220pF
3300pF
2. Resistors R1 and R2 should have precision of ±1%.
3. Capacitors C1 and C2 should have precision of
±5% and temperature characteristic of CH class.
Note 2 :
* 1. 2 Input signal sync tip must be less than
1V for application circuit 1 Pin 7
external circuit.
2. The above 1. does not apply for
application circuit 2 Pin 7 external circuit.
Pin 1 is clamped at approximately 2.5V.