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 Vcc GND 3 13 DIGREF 6 + V Sync Sep 14 VS V count down BGP Generator Reg Sync IN 2 H count down Sync Sep Phase Det 12 1 C Sync OUT 32fH VCO 9 10 4 VD 8 BGP 5 HD 7 SW 11 LPF VCO Out VCO Filter 2 VCO Filter 1 Ver.4 -1- NJW1303 T ABSOLUTE MAXIMUM RATINGS (Ta=25°°C) 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=25°C) 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 UNIT mA kHz Hz Hz us 286mVpp Horizontal Output Delay TpDH Output Signal TpDH 0.48 0.64 0.8 us -0.2 0.1 0.3 V - - -20 dB 3.1 3.6 4.1 us 0.35 0.6 0.85 us - - -17 dB PwHD Horizontal Output Saturation Level VoLH VoLH 0V *point1 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 BGP Pulse Width 4.8us PwGP 286mVpp TpDG Output Signal BGP Delay BGP Limit Input TpDG VMINBGP PwGP 0V *point1 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. Ver.4 -2- NJW1303 + T ELECTRICAL CHARACTERISTICS ( V =5V, Ta=25°C) PARAMETER SYMBOLS TEST CONDITIONS MIN. TYP. MAX. UNIT 2.5 3.0 3.5 H 0.47 0.66 0.85 H - 0.2 0.5 V TpCS 0.32 0.5 0.64 us VLCS - 0.2 0.5 V Vertical Output Pulse Width PwVD Vertical Output Delay TpVD *point Vertical Output Saturation Level C.SYNC Output Delay C.SYNC Output Saturation Voltage VLVD Low level of Vertical output *point 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 910kΩ TPV 1uF 1kΩ (VCC) 360Ω 1 CSYNCOUT VS 14 2 SYNCIN GND 13 3 VCC LPF 12 4 VD VCOFIL1 11 1uF 330pF 100uF 15000pF 3kΩ 4.7uF 68000pF 1.8kΩ 5 HD VCOFIL2 10 390Ω 6 DIGREF 7 SW 150pF VCOOUT 9 BGP 8 1000pF *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 ■APPLICATION 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 5.7µ.s Ver.4 -4- NJW1303 T EQUIVALENT CIRCUIT No. NAME INSIDE EQUIVALENT CIRCUIT No. NAME INSIDE EQUIVALENT CIRCUIT VCC VCC 1 Csync. 10 3k Out 20k VCO Filter 2 3k GND GND VCC VCC 10k 2 Sync. 200 11 In VCO Filter 1 GND GND VCC 3 Vcc 4 VCC 12 5 7 VD 8 HD LPF 200 SW GND BGP DIGREF 6 DIGREF 13 GND VCC VCC 9 VCO 200 200 Out 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-