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| j Video Amplifier with 75 ohms Driver sGENERAL DESCRIPTION THE NJM2568 is a video amplifier with 75 ohms drivers, which includes LPF and BPF of both Y and C system. THE NJM2568 can compose the output circuit of digital video items with a little external components. It is suitable for portable items. sFEATURES + + qOperating Voltage V 1=4.5 to 5.3V,V 2=2.7 to 5.3V + qOperating Current 9.5mAtyp.V =4.8V + 7.3mAtyp.V =3.0V qInternal LPF,BPF qInternal Clamp Discharge qBipolar Technology qPackage Outline SSOP14 sBLOCK DIAGRAM 12 COMP. NJM2568 sPACKAGE OUTLINE NJM2568V 11 10 3 Blank LEVEL 3v Vreg 4.8v CLAMP -6dB GCA 63dB 2 ATT LPF CLAMP -6dB +18dB 75Driver 1 4 5 DISC. Blank LEVEL 8 9 6 BIAS -6dB GCA 63dB 7 14 13 ATT BPF PowerSave 1.CLAMP REF 2.YIN 3.GCA CTLY/MUTE 4.CLAMP 5.DIS CTL 6.GND 7.GND 8.VSAG 9.VOUT + 10.V 1 + 11.V 1 + 12.V 2 13.GCA CTLC/POWER SAVE 14.CIN -1- j sABSOLUTE MAXIMUM RATINGS PARAMETERS SYMBOL + Supply Voltage V Power Dissipation PD Operating Temperature Range Topr Storage Temperature Range Tstg + NJM2568 RATINGS 7.0 300 -20 to +85 -40 to +125 + (Ta=25C) UNIT V mW C C sELECTRICAL CHARACTERISTICS ( Ta=25C,V 1=4.8V,V 2=3.0V,RL=150) PARAMETERS Operating Current 1 Operating Current 1 (Power Save Mode) Operating Current 2 Operating Current2 (Power Save Mode) (Y Amplifier) Voltage Gain 1 Voltage Gain 2 (C Amplifier) Voltage Gain 1 Voltage Gain 2 (Filter Characteristics) GfY6M GfY7.2M GfY20M DLY GfC1M GfC1.6M GfC500k GfC20M DLC TYC 6MHz/100kHz,100mVp-p @Sine Wave 7.2MHz/100kHz,100mVp-p@Sine Wave 20MHz/100kHz,100mVp-p@Sine Wave Group Delay |GD3MHz-GD6MHz| 1MHz/4MHz,100mV@Sine Wave 1.6MHz/4MHz,100mV@Sine Wave 500kHz/4MHz,100mVp-p@Sine Wave 20MHz/4MHz,100mVp-p@Sine Wave Group Delay |GD3MHz-GD6MHz| TYOUT-TCOUT at 4MHz -1.0 -1.5 -1.0 -3.0 0 0 -30 60 0 0 -15 -25 60 -20 100 -10 -10 90 dB dB dB nsec dB dB dB dB nsec GvC1 GvC2 CIN to VOUT,GCACTLY=0.5V 4MHz,143mVp-p @Sine Wave CIN to VOUT,GCACTLC=2.5V 4MHz,143mVp-p @Sine Wave +3.0 +6.0 +9.0 dB dB GvY1 GvY2 YIN to VOUT,GCACTLY=0.5V 100kHz,0.5Vp-p @Sine Wave YIN to VOUT,GCACTLY=2.5V 100kHz,0.5Vp-p @Sine Wave +3.0 +6.0 +9.0 dB dB SYMBOL ICC1 Isave1 Icc2 Isave2 + + + + TEST CONDITION V 1=4.8V,No Signal V 1=4.8V,Power Save V 2=3.0V,No Signal V 2=3.0V,Power Save MIN. TYP. MAX. UNIT 9.5 1.6 7.3 0.37 12.5 2.1 10.0 0.9 mA mA mA mA +13.0 +16.0 +19.0 +13.0 +16.0 +19.0 LPF (YIN) BPF (CIN) (YC Delay) YC Delay (Maximum Output Swing) V-OUT (GCA Control Signal) GCACTLY GCACTLC VGC1 VGL1 VGC2 VGL2 GCA Control Voltage MUTE Voltage GCA Control Voltage Power Down Voltage 0.5 GND 0.5 GND 2.5 0.3 2.5 0.3 V V V V VOVM 100kHz,Sine Wave,RL=75 1.2 Vp-p +25 nsec -2- j sTEST CIRCUIT C IN V +2 V +1 NJM2568 G C AC TLC VOUT1 VOUT2 S2 A B 47uF 47uF + 75 50 S4 A B 1000pF 1000pF + 75 75 1000pF + + 100uF 22uF + 0 .1 u F + 14 13 12 11 10 9 8 N JM 2568 1 0 .1 u F 1uF 2 3 4 + 5 6 7 + S3 A S1 A B B 1000pF 1M GND 1uF 20k 20k GND 75 50 Y IN G C A C T LY D IS C .C T L -3- NJM2568 MEMO |
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