NJM2505A SINGLE ISOLATION AMPLIFIER ■ GENERAL DESCRIPTION NJM2505A is the single isolation amplifier developed by the video signal. It can remove the noise of a signal with isolation amplifier and carries in the small package (MTP5), it is suitable for the interface of the video signal of a car AV system. ■ PACKAGE OUTLINE NJM2505AF ■ FEATURES ● Operating Voltage 4.5 to 9.0V ● Input: Sync-tip Clamp ● Common Mode Noise Rejection Ratio –55dBtyp. ● Voltage Gain 0dBtyp. ● Frequency Characteristics 0dBtyp.at 10MHz ● Bipolar Technology ● Package MTP5 ■ PIN CONFIGURATION 1 1: Vout 5 2: GND 2 3: V+ 3 4: Vin 4 5: VGND ■ BLOCK DIAGRAM Vout 1 GND 2 V+ 3 5 VGND 4 Vin Ver.4 -1- NJM2505A ■ ABSOLUTE MAXIMUM RATINGS(Ta=25°C) PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL + V PD Topr Tstg RATINGS 15.0 200 -40 to +85 -40 to +125 UNIT V MW °C °C ■ RECOMMENDED OPERATING CONDITION(Ta=25°C) PARAMETER SYMBOL Operating Voltage Range TEST CONDITION Vopr MIN. TYP. MAX. UNIT 4.5 - 9.0 V MIN. TYP. MAX. UNIT 2.0 -1.0 -1.0 3.0 2.2 0 0 6.0 1.0 1.0 mA Vp-p dB dB + ■ ELECTRICAL CHARACTERISTICS( V =5.0V, Ta=25°C) PARAMETR Supply Current Maximum Output Voltage Level Voltage Gain Frequency Characteristics Common Mode Noise Rejection Ratio Differential Gain Differential Phase Ver.4 -2- SYMBOL TEST CONDITION ICC Vom Gv Gf No Signal Vin=100kHz,Sin-Signal,THD=1%, Vin=100kHz,1.0Vp-p,Sin-Signal Vin=10MHz / 1MHz ,1.0VppSin-Signal CMR Vin=20KHz,Vin=1Vpp - -55 - dB Vin=1.0Vp-p,10step Video Signal Vin=1.0Vp-p,10step Video Signal - 0.3 0.4 - % deg DG DP NJM2505A ■ TEST CIRCUIT When CMR is measured, VGND is connected with VIN. VIN VGND 4.7uF + 75Ω + 4.7uF 50Ω 4 5 NJM2505A 1 3 2 0.1uF + 22uF + 10uF 2kΩ ■ APPLICATION CIRCUIT VOUT GND VCC VIN VGND 75Ω Input resistance Input resistance + 4.7uF 4.7uF 5 + 4 NJM2505A 1 2 3 0.1uF + + 10uF 2kΩ Ver.4 VOUT GND VCC -3- NJM2505A ■ APPLICATION 1: Please connect input surge resistance to 4pin(Vin) and 5pin(VGND). Please refer to Fig. 1. If resistance is enlarged, a waveform may deteriorate. Surge Diode Surge Resistance ≒100Ω 4,5pin Surge Diode NJM2505A Fig1: External connection 0.5 0.4 0.3 Gv(dB) 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 0 20 40 60 80 100 120 140 160 180 160 180 Input Resistance(Ω) Fig2: Input resistance vs. Voltage gain -40 -45 -50 CMR(dB) -55 -60 -65 -70 -75 -80 0 20 40 60 80 100 Input Resistance(Ω) 120 140 Fig3: Input resistance vs. Common mode rejection ratio Ver.4 -4- NJM2505A 2: Please connect a diode in a VGND at large common mode noise may be inputted into a Vin(4pin) and VGND(5pin). Thereby, large common noise is restricted(refer to Fig.4).Current flows to a diode. Be careful of current capacity. VGND NJM2505A 5pin Fig4: External connection Ver.4 -5- NJM2505A ■ EQUIVALENT CIRCUIT Pin.No Symbol 1 Vout Inside Equivalent Circuit Voitage 0.92V 80Ω 2 GND - - 3 V+ - - 240Ω 4 Vin 1.67V 31kΩ 5 Ver.4 -6- VGND 1.67V 30kΩ NJM2505A Common mode rejection ratio vs. Frequency (Vin=1.0Vp-p,Ta=25°C) 5 -10 0 -20 -5 -30 CMR[dB] Gv[dB] ■ TYPICAL CHARACTERISTICS Voltage gain vs. Frequency (Vin=100kHz,1.0Vp-p,Ta=25°C) -10 -40 -50 -15 -20 5 10 6 10 10 7 10 -60 8 10 Frequency [Hz] 1000 10 4 10 5 10 6 7 10 8 10 Frequency [Hz] Supply current vs. Supply voltage (Ta=25°C) Maximum output voltage vs. Supply voltage (Vin=100kHz,Ta=25°C) 3.5 4.0 3.0 Icc[mA] Vom[V] 5.0 2.5 3.0 2.0 4.00 8.00 12.00 2.0 4.00 16.00 Voltage gain vs. Supply voltage (Vin=100kHz,1.0Vpp,Ta=25°C) 12.00 16.00 Frequency characteristics vs. Supply voltage (Vin=1.0Vpp,10MHz/1MHz,Ta=25°C) 1.0 0.5 0.5 Gf[dB] 1.0 0.0 0.0 -0.5 -0.5 -1.0 4.00 8.00 Vcc [V] Vcc [V] Gv1[dB] 100 8.00 Vcc [v] 12.00 16.00 -1.0 4.00 8.00 12.00 16.00 Vcc [V] Ver.4 -7- NJM2505A ■ TYPICAL CHARACTERISTICS -30.0 1.0 -40.0 0.8 -50.0 0.6 DG[%] CMR[dB] Common mode noise ratio vs. Supply voltage (Vin=20kHz,1.0Vpp,Ta=25°C) -60.0 Differential gain vs. Supply voltage (Vin=1.0Vpp,Ta=25°C) 0.4 0.2 -70.0 -80.0 4.00 8.00 12.00 0.0 4.00 16.00 8.00 12.00 16.00 Vcc [V] Vcc [V] Differential phase vs. Supply voltage (Vin=1.0Vpp, Ta=25°C) 1.0 DP[%] 0.8 0.6 0.4 0.2 0.0 4.00 8.00 12.00 16.00 Vcc [V] Supply current vs. Ambient temperature (Vcc=5V) Maximum output voltage vs. Ambient temperature (Vcc=5V,Vin=100kHz) 3.5 5.0 4.5 3.0 Vom[V] Icc[mA] 4.0 3.5 2.5 3.0 2.5 2.0 -50.00 0.00 50.00 o Temp [ C] Ver.4 -8- 100.00 150.00 2.0 -50.00 0.00 50.00 o Temp [ C] 100.00 150.00 NJM2505A ■ TYPICAL CHARACTERISTICS Frequency characteristics vs. Ambient temperature (Vcc=5V,Vin=1.0Vpp 10MHz/1MHz) 1.0 1.0 0.5 0.5 Gf[dB] Gv1[dB] Voltage gain vs. Ambient temperature (Vcc=5V,Vin=100kHz,1.0Vpp) 0.0 0.0 -0.5 -0.5 -1.0 -50.00 0.00 50.00 100.00 -1.0 -50.00 150.00 50.00 100.00 150.00 Temp [ C] Temp [ C] Common mode noise ratio vs. Ambient temperature (Vcc=5V,Vin=20kHz,1.0Vpp) Differential gain vs. Ambient temperature (Vcc=5V,Vin=1.0Vpp) -30.0 1.0 -40.0 0.8 -50.0 0.6 DG[%] CMR[dB] 0.00 o o -60.0 0.4 0.2 -70.0 -80.0 -50.00 0.00 50.00 100.00 150.00 0.0 -50.00 0.00 50.00 100.00 150.00 Temp [oC] o Temp [ C] Differential phase vs. Ambient temperature (Vcc=5V,Vin=1.0Vpp) 1.0 DP[%] 0.8 0.6 0.4 0.2 0.0 -50.00 0.00 50.00 Temp [o C] 100.00 150.00 [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 -9-