CCD Delay Line Series MN3870S NTSC-Compatible CCD Comb Filter with Built-in H Video Signal Delay Element Overview The MN3870S is a 4 f SC CMOS CCD comb filter with a built-in 4 f SC CMOS CCD signal delay element for video signal processing applications. It contains such components as a fourfold-frequency circuit, a shift register clock driver, a CCD analog shift register switchable between 9, and 908 / 906 stages, and a resampling output amplifier. It samples the input using the supplied clock signal with a frequency of four times the color signal subcarrier frequency (3.58 MHz) and subtracts between the 9- and -stage CCD output signals to produce the color signal comb characteristics for the NTSC system. It also uses this fourfold frequency to drive a 908- or 906-stage CCD and samples the input to produce, after adding in the attached filter delay, a delay of H (the horizontal scan period) when the SW pin is left open. Features Single 5.0 V power supply Low power consumption based on CMOS process Low EMI levels from clock during driving True comb filter produced by the subtraction of the through signal and the H delay signal Applications VCRs, Video cameras Pin Assignment X V BB VGC VOC VINC V SS V DD ( TOP VIEW ) SOP0-P-0300C 2 3 4 5 6 7 8 9 0 9 8 7 6 5 4 3 2 PCOUT & VCOIN V SS3 V DD3 V DD2 V SS2 VGC2 SW VINY VOY includes following four Product lifecycle stage. SDB00075BEM
MN3870S CCD Delay Line Series Block Diagram 0 6 7 3 SW 4 VGC 4 VGC2 Clamp circuit Bias circuit Mode switch Booster circuit 2 6 Waveform amplifier Phase comparator input input input Waveform Timing /4th frequency divider 908 or 906-stage analog shift register 9-stage analog shift register -stage analog shift register Waveform Timing 9 5 detector detector detector 8 Resampling output amplifier Resampling output amplifier 2 5 VOY VOC PCOUT & VCOIN V SS V SS2 V SS3 V BB V DD V DD2 V DD3 VINY VINC XI VCO øy driver ø2y driver øc driver ø2c driver øsy driver øry driver øshy driver øshy driver øsc driver ørc driver øshc driver øshc driver Substrate bias generator includes following four Product lifecycle stage. 2
CCD Delay Line Series MN3870S Pin Descriptions Pin No. Symbol Pin Name Remarks XI 3.58 MHz clock input 2 V BB Substrate connection 4 VGC Output gate connection () 5 VOC C signal output 6 VINC C signal input 9 V SS GND () Ground for analog circuits 0 V DD Power supply () For analog circuits VOY Y signal output 2 VINY Y signal input 3 SW Switch controlling number of stages for Y signal delay 4 VGC2 Output gate connection (2) 5 V SS2 GND (2) Ground for digital signals 6 V DD2 Power supply (2) For digital signals 7 V DD3 Power supply (3) For phase-locked loop 8 V SS3 GND (3) Ground for phase-locked loop PCOUT Phase comparator output and voltage controlled &VCOIN oscillator input Note: Leave pin 3 open. includes following four Product lifecycle stage. 3
MN3870S CCD Delay Line Series Operating Conditions Parameter Symbol min typ max Unit Power supply voltage V DD 4.75 5.00 5.25 V Input clock frequency f ck 3.579545 MHz Input clock amplitude (sine wave) V ck 0.25 0.3.0 V P P Ambient temperature Ta 60 C Electrical Characteristics V DD =5.0V, V ck =0.3V P-P (sine wave), V in =0.5V P-P (sine wave), f ck =3.579545MHz, f=96.7khz, Ta=25 C Parameter Symbol Conditions min typ max Unit Power supply voltage I DD Average current 55 80 ma Insertion gain for VOC pin IG f sig =3.579545MHz 9 5.5 2 db Total harmonic distortion for VOC THD f sig =3.26486MHz 0.5 2.5 % pin Signal-to-noise ratio for VOC pin S/N 3.264 86 MHz output (V P-P )/ 48 56 db noise output (rms) Output impedance for VOC pin Z O 300 600 Ω Comb characteristics for VOC pin 3.57678MHz/3.579545MHz Com (f sc /2f H ) / (f sc ) 35 25 db 3.256993MHz/3.264860MHz Com2 (f sc.5f H ) / (f sc f H ) 30 db 3.9097MHz/3.894230MHz (f sc.5f H ) / (f sc f H ) 30 db Clock leak for VOC pin 3.58-MHz component/main NC 50 40 db NC2 4.32-MHz component/main 30 db Signal bandwidth for VOY pin BW 3 db for 96.7 khz 2.5 5.5 MHz Insertion gain for VOY pin IG f sig =96.7kHz.5.5 4.5 db Total harmonic distortion for VOY THD f sig =96.7MHz 4.5 % pin Signal-to-noise ratio for VOY pin S/N Signal output (P P)/noise output 48 56 db (rms) Clock leak for VOY pin 3.58-MHz component/main NC3 50 40 db NC4 4.32-MHz component/main 0 db Delay for VOY pin τ D 63.46 µs Output impedance for VOY pin Z O 250 500 Ω Crosstalk CT f sig =96.7kHz 32 db includes following four Product lifecycle stage. 4
CCD Delay Line Series MN3870S Package Dimensions (Unit: mm) SOP0-P-0300C 2.63±0.3 0 (0.6).27 0.4±0.25 0.0 New Package Dimensions (Unit: mm) SOP0-P-0300F (Lead-free package) 5.5±0.3 7.6±0.3 2.05±0.2 0.±0. 0.2 +0. -0.05 (0.4) Note) The package of this product will be changed to the following lead-free type (SOP0-P-0300F). 2.63±0. 0 (0.60).27 0.40 +0.0-0.05 2.05±0. 5.50±0. 7.60±0.30 0. +0.0-0.05 (.05) 0 to 0 (0.40) includes following four Product lifecycle stage. 0.0 0.0±0.0 5
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