CCD Delay Line Series
MN3881S
PAL-Compatible CCD Video Signal Delay Element
Overview
The MN3881S is a CCD signal delay ...
CCD Delay Line Series
MN3881S
PAL-Compatible CCD Video Signal Delay Element
Overview
The MN3881S is a CCD signal delay element for video signal processing applications. It contains such components as a shift register clock driver, charge I/O blocks, 1/2nd frequency doubler, two switchable CCD analog shift registers, a clamp bias circuit, resampling output
amplifiers, a mode selection circuit and booster circuits. When the switch pin is grounded, the MN3881S samples the input using the supplied clock signal with a frequency 8.8672375 MHz of twice the PAL color signal subcarrier frequency, and after adding in the attached filter delay, produces independent delays of 1 H (the horizontal scan period for the PAL system) for the Y output and 2 H for the C output.
Pin Assignment
VBIASC VOC N.C. VDD –VBB N.C. VOY VBIASY
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VINC N.C. N.C. XI VSS SW N.C. VINY
Features
Single 4.9 V power supply Single chip combining luminance signal delay element and delay element for color signal converted to low frequency.
( TOP VIEW ) SOP016-P-0225
Applications
VCRs
1
MN3881S
Block Diagram
CCD Delay Line Series
12
4
Auto bias circuit VINC 16 Charge input block
Charge detection block
CCD 567 stages
Resampling output 2 amplifier
1
VBIASC
VDD
VSS
VOC
øS driver
ø1 driver
ø2 driver
øR driver
øSH driver øSH driver
Timing adjustment
XI
13 Waveform amplifier
adjustment block
1/2nd frequency doubler
Timing adjustment
øS driver
ø1 driver
ø2...