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| NJW1303 SYNCHRONOUS SEPARATOR WITH COUNT DOWN TGENERAL DESCRIPTION The NJW1303 is a synchronous separator performs Horizontal and Vertical synchronous signal from composit video signals. It contains count down circuit for H,V keeping high sync separation in the weak signal. It is suitable for car navigation and LCD TV. TPACKAGE OUTLINE NJW1303V TFEATURES + Operating Voltage V =2.7V to 5.3V + Operating Current 5mA typ. at V =5V Output for HD,VD,C sync unnecessary adjustment of oscillation frequency for internal count down circuit Internal BGP Bi-CMOS Technology Package Outline SSOP14 TPIN FUNCTION, BLOCK DIAGLAM Vcc + 14 Vcc 3 GND 13 DIGREF 6 VS Reg V Sync Sep V count down BGP Generator H count down 4 8 5 VD BGP HD 7 Sync IN 2 Sync Sep 1 Phase Det 12 9 32fH VCO 10 11 SW C Sync OUT LPF VCO Out VCO Filter 2 VCO Filter 1 Ver.4 -1- NJW1303 T ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS + Supply Voltage V 8.0 Power Dissipation PD 300 Operating Temperature Range Topr -40 to +85 Storage Temperature Tstg -40 to +125 T RECOMMENDED OPERATING CONDITION PARAMETER SYMBOL RATINGS Supply Voltage Vopr 2.7 to 5.3 + UNIT V mW C C UNIT V T ELECTRICAL CHARACTERISTICS ( V =5V, Ta=25C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. Operating Current ICC No input signal 3.3 5.0 7.5 Measure the Input connect to GND AFC Free Run Frequency fOH 15.654 15.734 15.814 under 300ohm Miss lock to high frequency +600 +700 fHL1 AFC Lock Range Miss lock to Low frequency -700 -600 fHL2 Capture from high frequency +600 +700 fHP1 AFC Capture Range Capture from Low frequency -700 -600 fHP2 PwHD Input Signal Horizontal Output 3.5 3.9 4.3 Pulse Width 4.8us 286mVpp UNIT mA kHz Hz Hz us Horizontal Output Delay TpDH Output Signal TpDH PwHD 0.48 0.64 0.8 us Horizontal Output Saturation Level VoLH VoLH 0V *point1 -0.2 0.1 0.3 V Horizontal AFC Keep Limit Input VINGM Input is Color Bar of 1Vpp,and Horizontal signal of 4.8 uS pulth width. ATT less of miss lock Sync at valuable of input signal level. Input Signal 4.8us - - -20 dB BGP Pulse Width PwGP 286mVpp TpDG 3.1 3.6 4.1 us Output Signal PwGP 0V *point1 BGP Delay TpDG 0.35 0.6 0.85 us BGP Limit Input VMINBGP Input is Color Bar of 1Vpp,and Horizontal signal of 4.8 uS pulth width. ATT less of changeable BGP output at less of input signal level. - - -17 dB Ver.4 -2- NJW1303 T ELECTRICAL CHARACTERISTICS ( V =5V, Ta=25C) PARAMETER SYMBOLS TEST CONDITIONS Vertical Output Pulse Width Vertical Output Delay Vertical Output Saturation Level C.SYNC Output Delay C.SYNC Output Saturation Voltage *point PwVD *point TpVD VLVD TpCS VLCS Low level of Vertical output 0.47 0.32 0.66 0.2 0.5 0.2 0.85 0.5 0.64 0.5 H V us V + MIN. 2.5 TYP. 3.0 MAX. 3.5 UNIT H Equivalent Palse Vertical Sync.Pulse Equivalent Palse Signal Input Signal VD Output TpVD *When measure of pulse timing 50% 50% 50% 50% Ver.4 -3- NJW1303 TTEST CIRCUIT 910k TPV (VCC) 360 330pF 3 100uF 68000pF 4 5 6 7 VD HD DIGREF SW VCOFIL1 VCOFIL2 VCOOUT BGP 11 1.8k 10 390 9 8 1000pF 150pF VCC LPF 12 1k 1 1uF 2 SYNCIN GND 13 15000pF 3k 4.7uF CSYNCOUT VS 14 1uF *1 *2 *1: CSBLA503KE5ZF10 at MURATA *2: NTSC/PAL SW NTSC : GND PAL :Vcc,and 9 to10pin is 360 ohm, 10 to 11pin is 2 k ohm sAPPLICATION NOTES * The ratio of the vertical synchronous pulse term and the vertical synchronous signal cycle Please adjust following expression. The vertical synchronous signal cycle / The vertical synchronous pulse term 75 (see following figure) Vertical Synchronous Signal cycle Vertical Synchronous Pulse term Vertical Synchronous Pulse term * The pulse width of horizontal synchronous signal shall be set 3.7 to 5.7.s Ver.4 -4- NJW1303 T EQUIVALENT CIRCUIT No. NAME INSIDE EQUIVALENT CIRCUIT VCC No. NAME INSIDE EQUIVALENT CIRCUIT VCC 1 Csync. Out 3k 10 20k 3k GND VCC VCO Filter 2 GND VCC 10k 2 Sync. In 200 11 VCO Filter 1 GND GND VCC 3 4 5 7 8 Vcc VCC 12 VD HD SW BGP DIGREF VCC 200 LPF GND 6 13 DIGREF GND VCC 9 VCO Out 200 200 14 VS GND GND Ver.4 -5- NJW1303 MEMO [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. Ver.4 -6- |
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