LZ95B25

LZ95B25 LZ95B25 DESCRIPTION The U95B25 is a CMOS subcarrier signal generator LSI which provides subcarrier pulses for color video camera, in combination LSI (LZ95D52/M) Subcarrier Generator LSl for CCD PIN CONNECTIONS 18-PIN MFP TOP VIEW TVMI 1 FEATURES . Switchable between NTSC, PAL and SECAM systems . Included phase comparator circuit q Single + 5 V power supply q Package : 18-pin MFP(MFPO1 8-P) TVM2 4FSI 3 4FS0 4 TST I SC, 6 SC2 7 GND 9 TST2 8 B 2 0 18 VCC 17 GNO 16 CPI 15 SCHD 5 14 RPI 13 CFMI 12 TST3 11 CPCH 10 EOO RI ~.K nlAGRAM ------ . . . . . . . . . . . Vcc GND CPI SCHD RPI CFMI TST, CPCH EOO TVM I TVM2 4FSI 4FS0 TST! SCI SC2 TST2 GNO ‘In the abwnce of confimtion by device sw!fication sheets SHARP takes no rewnslb!l(v fci any defects tiat xcur in equ)pment us(ng any of WARPs devices, shorn In cablcgs, I data M, et, ?nnta?t SHARP ,. order in nhta(n ihe latp?t ws,on of tie device m.lhcation .*wb btie uslno a nv SHARPs device” 299 LZ95B25 ABSOLUTE MAXIMUM RATINGS PARMHER Supply voltage Input voltage Output voltage Operating temperature Storage temperature SYMBOL Vcc VI Vo Topr Tstg RATING UNIT –0.3 to 7.0 v v v ‘c “c – 0.3 to Vcc + 0.3 – 0.3 to Vcc + 0.3 –20 to +70 –55 to +150 DC CHARACTERISTICS PARMHER Input Low voltage Input High voltage I Input Low current SYMBOL vlL vlH [IL1 I Vl=r) v (VCC=+5 V*1O%, T a = – 1 0 CONDITIONS MIN. TYP. MAX. 1.5 3.5 1.0 8,0 60 1.0 t o +7 UC) NOTE ~ 1 2 2 4 5 6 7 8 6 7 8 UNIT v v ,uA PA PA ,uA v v v I,,I IILZ I IIH1 I I Vl=o v V I = Vcc V I = Vcc IoH=–P Input High current I IIH2 8.0 mA 4.0 4.0 4,0 60 vOH 1 Output High voltage vOH2 IoH=– I mA IoH=–6 mA ioL = 4 mA IOL = 2 mA IoL=12 High-Z mA vOH3 vOL1 Output Low voltage vOL2 v0L3 Leak output current 1 Ioz I 0.4 0,4 0,4 1.0 v v v ,uA NOTES : 1. Applied to inputs (IC, ICU, OSCI). 2. Applied to inputs (lCD, OSCI). 3. Applied to input (ICU). 4. Applied to inputs (ICU, OSCI). 5. Applied to input (lCD). 6. Applied to outputs (O, OSCO). 7. Applied to output (02M). 8. Applied to tri-state output (EOO). 300 LZ95B25 4N .““. SYMBOL _.. ..— —— TVM I 1/0 Icu I POLARITY I — PIN NAME TV mode 1 FUNCTION These input pins to select TV standards. 1 2 TVM2 Icu — TV mode 2 ~ An input pin for the signal 4 times the color subcarrier frequency. 3 4FSI Oscl nn Colck input At NTSC mode At PAL mode : 14.31818 MHz : 17.734475 MHz At SECAM mode : 17.625 MHz 4 5 4FS0 TSTI Osco ICD Ulr — Clock output Test pin 1 The output is the inverse 4FSI (pin 4). A test pin, Set open or to L level in the Normal mode, An output pin fw color subcarrier. The frequency of 6 SC1 02M Iu Subcarrier output 1 the signals is 1/4 the 4FSI (pin 3). The signal is reset by color frame pulse CFMI (pin 13). An output pin for color subcarrier. When the phase of SCI (pin 4) is 180 degree, the phase of SCZ is 80 degree in NTSC mode in PAL mode, the phase of SC2 is 80 degree when LSW (SSG-LSI) is L level and 270 degree when LSW is H level. The SC z is same as the phase of SC I in SECAM mode. 7 SC2 02M Iu Subcarrier output 2 8 9 TST2 GND ICD — — — Test pin 2 Ground A test pin. Set open or to L level in the Normal mode. A grounding pin. Phase comparator output for input signals RPI (pin 14) and CPI (pin 16). When CPI is advanced, output 10 EOO TO — Phase comparator output is Low level. When CPI is delayed, output is High level. When phases are equal, the terminal impadance is High. Pha= comparator comparates rising edge of CPI. The CPCH input pin switches the polarity of RPI 11 CPCH ICD — Polarity select input (pin 14). When CPCH is L level, pha~ c omparator comparates rising edge of RPI. When CPCH is H level, phase comparator comparates falling edge of RPI. 12 TST3 ICD – Test pin 3 A test pin. Set open or to L level in the Normal mode. An input pin for color frame signal; Connect to CFMO (SSG-LSI). 13 CFMI ICD – Color frame input 301 LZ95B25 :’. 14 SYMBOL 1/0 POLARITY PIN NAME Horizontal comparison input FUNCTION An input pin for the reference horizontal signal to RPI ICD — the phase comparator. Connect to HD (SSG-LSI), when comparator is used. The polarity of RPI selects with CPCH (pin 11), A horizontal synchronous pulse obtained by dividing 4FSI (pin 3). At NTSC mode At PAL mode : dividing into 1/910 4FSI, : dividing into 1/1 135 4FSI ordinarily and dividing into 1/1 137 4FSI during one horizon tal period within the V blanking. At SECAM mode : dividing into 1/1 128 4FSI. An input pin for comparison horizontal signal to the phase comparator. Connect to SCHD (pin 15) when comparator is used, A grounding pin. Supply +5 V power. 15 SCHD o – Subcarrier HD 16 CPI [CD – Horizontal comparison input 17 18 GND Vcc — – — . Ground Power supply (CMOS level with built-in pull-up resistor). : Input pin (CMOS level with built-in pull-up resistor). o : Output pin, 02M : Output pin. TO : Output pln (tn-state output). OSCI : Input pin for oscillation. OSCO : Output pin for oscillation. ICD Icu : Input pin 302 LZ95B25 TIMING DIAGRAM PULSE TIMING < NTSC > 4FSI SC? SC2 1 SC2 : 90” a dvanced PULSE TIMING < PAL > 4FSI LSW sc~~ SC2 ~ SC2 : 90” advanced ~ SC2 : 90” delayad PULSE TIMING < SECAM > 4FSI Sci SC2 WI, SC2 I : s ame phaw 1 1 303