NJM2723 High Speed Current Feedback Operational Amplifier ■ General Description The NJM2723 is a high speed, wide bandwidth and high output current feedback operational amplifier. Driving 150Ω load can expand the versatility of several multimedia applications. Current feedback technology has wide bandwidth and Low supply current. With a 75MHz at G=+2, 24MHzat G=+10, high slew rate of 2000V/µs, second harmonic distortion -65dB and settling time of 50ns(0.1%) The NJM2723 makes it ideal for high frequency amplifier, active filter and pulse amplifier applications. ■ Features High Speed ●Bandwidth 75MHz (−3dB, G=+2) ●Bandwidth 24MHz (−3dB, G=+10) ●Slew Rate 2000V/µs For Video Applications (V+/V−=±5V) ●Bandwidth 52MHz (−3dB, G=+2) ●Bandwidth 8MHz (0.1dB, G=+2) ●Differential Gain 0.05% ●Differential Phase 0.25deg ●Settling Time 50ns (0.1%, G=+2) Low Noise ●Voltage Noise 6nV/√Hz (@1kHz) ●Current Noise 13pA/√Hz (@1kHz) ●THD −60dBc (@10MHz) ■ Package Outline NJM2723E NJM2723D ORDER INFORMATION Parts NJM2723D NJM2723E Package DIP8 EMP8 ■ Pin Configuration ( Top View ) N.C. 1 8 N.C. -INPUT 2 7 V+ +INPUT 3 6 OUTPUT V- 4 5 N.C. ●Specified for ±5V and ±15V operation ●150Ω Drive Capability ●Output Voltage ±3.5V min. (RL=150Ω, V+/V−=±15V) ±2.4V min. (RL=150Ω, V+/V−=±5V) ●Supply Range ±3.5V~±17.5V ●Supply Current 5mA max. ■ Applications ●High frequency amplifier ●Active Filter ●150Ωcable driver ●Video amplifier 150ΩDrive High Slew Rate OP−AMP Lineup (Single) SR=250V/µs SR=500V/µs SR=2000V/µs Voltage Feedback NJM2720 NJM2721 Current Feedback NJM2723 Ver.2009-10-28 -1- NJM2723 ■ ABSOLUTE MAXIMUM RATINGS (Ta=25ºC, unless otherwise noted.) PARAMETER SYMBOL RATING UNIT Supply Voltage VDD ±18 V Common Mode Input Voltage Range Differential Input Voltage Range VICM VID ±18(Note1) ±3(Note1) V V Power Dissipation (Note4) PD DIP8: 500 EMP8: 375 / 625 (Note2) / 875 (Note3) mW Operating Temperature Range Topr -40~+85 Storage Temperature Range Tstg -50~+150 (Note1) For supply voltage less than ±18V, the absolute maximum rating is equal to the supply voltage. (Note2) On the PCB "EIA/JEDEC (114.3×76.2×1.6mm, 2 layers, FR-4)" (Note3) On the PCB "EIA/JEDEC (114.3×76.2×1.6mm, 4 layers, FR-4)" (Note4) See Figure “Power Dissipation Derating Curve" when ambient temperature is over 25ºC. °C °C Power Dissipation Derating Curve 1000 EMP8(Note3) Power Dissipation Pd (mW) 900 ∆Pd (mW/°C) Package DIP8 -4.0 EMP8 -3.0 -5.0 EMP8(Note2) -7.0 EMP8(Note3) 800 700 EMP8(Note2) 600 DIP8 500 400 EMP8 300 200 100 0 5 15 25 35 45 55 65 75 85 95 105 Ambient Temperature Ta (ºC) ■RECOMMENDED OPERATING VOLTAGE (Ta=25ºC) PARAMETER Supply Voltage -2- SYMBOL + - V /V TEST CONDITION MIN. TYP. MAX. UNIT ±3.5 - ±17.5 V Ver.2009-10-28 NJM2723 ■ ELECTRICAL CARACTERISTICS (Measurement is to be conducted as pulse testing.) ● DC CHARACTERISTICS (V+/V-=±15V, Ta=25ºC, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Supply Current Input Offset Voltage Icc VIO IB+ No Signal 2.9 4 2 2 2.5 ±12 66 76 5 20 20 20 - mA mV uA uA MΩ V dB dB Transimpedance Common Mode Input Voltage Range Common Mode Rejection Ratio Supply Voltage Rejection Ratio Maximum Output Voltage IBZT VICM CMR SVR VOM RL=1kΩ, Vo=±10V CMR≥56dB -11V≤VICM≤+11V + ±3.5V≤V /V ≤±17.5V 1.0 ±11 56 66 RL=1kΩ ±11.5 ±13 - V Maximum Output Voltage VOM RL=150Ω ±3.5 ±4.5 - V Input Bias Current ● AC CHARACTERISTICS (V+/V-=±15V, Ta=25ºC, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Bandwidth BW-3dB GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, CL=1pF GV=20dB, RF=680Ω, RG=75Ω, RL=1kΩ, CL=1pF - 75 24 - MHz MHz BW0.1dB GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, CL=1pF - 12 - MHz 0.1dB Flatness Slew Rate SR GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, CL=1pF, Vo=10Vpp, measured20% to 80% - 1500 - V/us Slew Rate SR GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, CL=1pF, Vo=20Vpp, measured20% to 80% - 2000 - V/us Settling Time 0.1% ts GV=-1, RF=620Ω, RG=620Ω, RL=1kΩ, CL=1pF, Vo=10Vpp - 50 - ns Equivalent Input Noise Voltage Equivalent Input Noise Current Vni Ini+ f=100kHz f=100kHz - 6 13 - nV/√Hz pA/√Hz Total Harmonic Distortion THD GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, Vo=2Vpp, f=10MHz - -60 - dBc 2nd Harmonic Distortion HD2nd GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, Vo=2Vpp, f=10MHz - -65 - dB 3rd Harmonic Distortion HD3nd GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, Vo=2Vpp, f=10MHz - -70 - dB Ver.2009-10-28 -3- NJM2723 ■ ELECTRICAL CARACTERISTICS (Measurement is to be conducted as pulse testing.) ● DC CHARACTERISTICS (V+/V-=±5V, Ta=25ºC, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Supply Current Input Offset Voltage Icc VIO IB+ No Signal 2.8 4 2 2 0.85 ±2.25 60 76 4.5 20 20 20 - mA mV uA uA MΩ V dB dB Transimpedance Common Mode Input Voltage Range Common Mode Rejection Ratio Supply Voltage Rejection Ratio Maximum Output Voltage IBZT VICM CMR SVR VOM RL=150Ω, Vo=±2V CMR≥50 -2≤VICM≤+2 + ±3.5≤V /V ≤±17.5 0.25 ±2 50 66 RL=1kΩ ±2.8 ±3.3 - V Maximum Output Voltage VOM RL=150Ω ±2.4 ±2.8 - V Input Bias Current ● AC CHARACTERISTICS (V+/V-=±5V, Ta=25ºC, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Bandwidth BW-3dB GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF GV=20dB, RF=680Ω, RG=75Ω, RL=150Ω, CL=1pF - 52 16 - MHz MHz BW0.1dB GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF - 8 - MHz 0.1dB Flatness Slew Rate SR GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF, Vo=2Vpp - 180 - V/us Settling Time 0.1% ts GV=-1, RF=620Ω, RG=620Ω, RL=150Ω, CL=1pF, Vo=2Vpp - 50 - ns Equivalent Input Noise Voltage Equivalent Input Noise Current Vni Ini+ f=100kHz f=100kHz - 5 13 - nV/√Hz pA/√Hz Total Harmonic Distortion THD GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, Vo=2Vpp, f=10MHz - -50 - dBc 2nd Harmonic Distortion HD2nd GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, Vo=2Vpp, f=10MHz - -60 - dB 3rd Harmonic Distortion HD3nd GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, Vo=2Vpp, f=10MHz - -50 - dB Differential Gain DG GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF, VINDC=1/0, VIN=0.286V - 0.05 - % Differential Phase DP GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF, VINDC=1/0, VIN=0.286V - 0.25 - deg -4- Ver.2009-10-28 NJM2723 ■ TYPICAL CHARACTERISTICS Supply Current vs. Supply Voltage 4 Ta=+25ºC 3.5 3.5 Ta=+85ºC 3 2.5 Ta=-40ºC 2 1.5 1 0.5 3.0 2.5 V+/V-=±5V 2.0 1.5 1.0 0.0 0 2.5 5 7.5 10 12.5 15 + Supply Voltage V /V [V] 17.5 20 -50 Maximum Output Voltage vs. Load Resistance 12 -25 0 25 50 75 100 125 150 Ambient Temperature [ºC] Maximum Output Voltage vs. Load Resistance V+/V-=±15V, VIN=±0.3V 15 V+/V-=±5V, VIN=±0.3V 5 Ta=+85ºC 4 Ta=-40ºC 9 3 Ta=+25ºC 6 Output Voltage [V] Output Voltage [V] V+/V-=±15V 0.5 0 Ta=+85ºC 3 0 -3 -6 Ta=+25ºC 2 Ta=-40ºC 1 0 -1 -2 -9 -3 -12 -4 -15 -5 10 0k 100 0k 1k 10k Load Resistance [Ω] 10 0k 100k Maximum Output Voltage vs. Supply Voltage 100 0k 1k 10k Load Resistance [Ω] 100k Maximum Output Voltage vs. Supply Voltage VIN=±0.3V, RL=1kΩ 20 VIN=±0.3V, RL=150Ω 15 Ta=-40ºC 15 10 Maximum Output Voltage [V] Maximum Output Voltage [V] RF=680Ω, RG=680Ω, RT=50Ω 4.0 Supply Current [mA] Supply Current [mA] Supply Current vs. Temperature RF=680Ω, RG=680Ω, RT=50Ω Ta=+85ºC Ta=+25ºC 5 Ta=-40ºC 0 -5 -10 -15 -20 10 Ta=+25ºC 5 Ta=+85ºC 0 -5 -10 -15 0 Ver.2009-10-28 2.5 5 7.5 10 12.5 15 + Supply VoltageV /V [V] 17.5 20 0 2.5 5 7.5 10 12.5 15 + Supply Voltage V /V [V] 17.5 20 -5- NJM2723 ■ TYPICAL CHARACTERISTICS Input Bias Current vs. Temperature Input Offset Voltage vs. Temperature 20 10.0 15 7.5 10 5 + - V /V =±5V 0 -5 V+/V-=±15V -10 Input Bias Current [µA] Input Offset Voltage [mV] VIN=0V V+/V-=±15V, VIN=0V 5.0 IB- 2.5 0.0 -2.5 IB+ -5.0 -7.5 -15 -20 -10.0 -50 -25 -50 0 25 50 75 100 125 150 Ambient Temperature [ºC] -25 0 25 50 75 100 125 150 Ambient Temperature [ºC] Input Bias Current vs. Temperature V+/V-=±5V, VIN=0V 10.0 4.5 5.0 IB+ 2.5 0.0 -2.5 IB- -5.0 Transimpedance [MΩ] 7.5 Input Bias Current [µA] Transimpedance vs. Temperature 5 -7.5 4 V+/V-=±15V RL=1kΩ 3.5 3 2.5 2 V+/V-=±5V RL=150Ω 1.5 1 0.5 -10.0 0 -50 -25 0 25 50 75 100 125 150 Ambient Temperature [ºC] -50 -25 0 25 50 75 100 125 150 Ambient Temperature [ºC] SVR vs. Temperature CMR vs. Temperature V+/V-=±15V VICM=±12V 90 80 70 60 V+/V-=±5V VICM=±2.25V 50 40 30 20 10 90 80 70 60 50 40 30 20 10 0 0 -50 -6- V+/V-=±3.5V~±18V, ViN=0V 100 Supply Voltage Rejection Ratio [dB] Common Mode Rejection Ratio[dB] 100 -25 0 25 50 75 100 125 150 Ambient Temperature[ºC] -50 -25 0 25 50 75 100 125 150 Ambient Temperature [ºC] Ver.2009-10-28 NJM2723 ■ TYPICAL CHARACTERISTICS Gain vs. Frequency V+/V-=±5V, RF=680Ω, RL=150Ω, CL=0pF, Ta=25ºC 30 20 20 10 Voltage Gain[dB] 30 6dB 0 -10 10 -10 -20 -30 -30 20 1M -40 100k 0M 1G 1000M 10M 100M Frequency[Hz] 6dB 0 -20 -40 100k 0M 1M 10M 100M Frequency[Hz] Gain vs. Frequency (Load Capacitance) Gain vs. Frequency (Load Capacitance) V+/V-=±15V, Gv=+2, RF=680Ω, RL=1kΩ, Ta=25ºC V+/V-=±5V, Gv=+2, RF=680Ω, RL=150Ω, Ta=25ºC 20 CL=100pF 15 15 CL=300pF 10 Voltage Gain[dB] 40 CL=10pF 5 0 -5 10 Voltage Gain[dB] Voltage Gain[dB] 40 Gain vs. Frequency V+/V-=±15V, RF=680Ω, RL=1kΩ, CL=0pF, Ta=25ºC -5 -15 -15 10M 100M Frequency[Hz] 1G 1000M CL=10pF 0 -10 1M CL=100pF CL=300pF 5 -10 -20 100k 0M 1G 1000M -20 100k 0M 1M 10M 100M Frequency[Hz] 1G 1000M -3dB Bandwidth vs Feedback Resistor RF Gv=+2, Ta=25ºC 120 V+/V-=±15V RL=1kΩ -3dB Bandwidth [MHz] 100 80 60 40 20 V+/V-=±5V RL=150Ω 0 400 Ver.2009-10-28 800 1200 1600 Feedback Resistor RF [Ω] 2000 -7- NJM2723 ■ TYPICAL CHARACTERISTICS Pulse Response Pulse Response V+/V-=±15V, Gv=+2, RF=680Ω, RL=1kΩ, CL=0pF, VO=10Vpp V+/V-=±5V, Gv=2, RF=680Ω, RL=150Ω, CL=0pF, VO=2Vpp, Ta=25ºC Input Input 2.5V/div. 0.5V/div. Output Output 5V/div. 1V/div. 50ns/div. 50ns/div. Pulse Response Pulse Response V+/V-=±15V, Gv=-1, RF=680Ω, RL=1kΩ, CL=0pF, VO=10Vpp V+/V-=±5V, Gv=-1, RF=680Ω, RL=150Ω, CL=0pF, VO=2Vpp, Ta=25ºC Input Input 5V/div. 1V/div. Output Output 5V/div. 1V/div. 50ns/div. 50ns/div. Slew Rate vs. Feedback Resistor RF 2000 V+/V-=±15V, Gv=+2, Ta=25ºC (Measured from 20% to 80%) 1750 Slew Rate [V/µs] 1500 rise 1250 1000 fall 750 500 250 0 0.4k -8- 0.8k 1.2k 1.6k Feedback Resistor RF [Ω] 2.0k Ver.2009-10-28 NJM2723 ■ TYPICAL CHARACTERISTICS V+/V-=±15V, RL=1kΩ, Ta=25ºC 100 Input Noise vs. Frequency 100 V+/V-=±5V, RL=150Ω, Ta=25ºC 100 10 Voltage Noise 1 100 0k Ver.2009-10-28 1k 10k Frequency [Hz] 1 100k Equivalent Input Noise Voltage [nV/√Hz] 10 Equivalent Input Noise Current [pA/√Hz] Equivalent Input Noise Voltage [nV/√Hz] Current Noise 100 Current Noise 10 10 Voltage Noise 1 100 0k 1k 10k Frequency [Hz] Equivalent Input Noise Current [pA/√Hz] Input Noise vs. Frequency 1 100k -9- NJM2723 ■ Application Note ● Choice of feedback resistor and gain resistor for current feedback operational Amplifier The NJM2723 is a current feedback operational amplifier. Closed-loop bandwidth depends on the feedback resistor value. Table1 shows recommended resistor values for a variety of useful closed-loop gains and supply voltages. Figure1. Formula of non−inverting / inverting amplifier RF RF RG RG - VO - VIN + + VIN VO Gv=1+RF/RG Gv= -RF/RG Table1. -3dB Bandwidth vs. Closed−loop Gain and Resistance Value V+/V-=±15V Closed-Loop Gain RF[Ω] RG[Ω] +1 +2 +10 -1 -10 750 680 680 680 680 680 75 680 68 -3dB BW[MHz] V+/V-=±5V Closed-Loop Gain RF[Ω] RG[Ω] -3dB BW[MHz] 120 76 20 65 25 +1 +2 +10 -1 -10 680 680 620 680 680 680 68 680 68 85 52 15 50 20 ● In case of using Voltage follower The feedback resistance must be inserted when using a current feedback amplifier as the voltage follower. A current feedback amplifier cannot be used by connecting output pin and inverting input pin directly. (Figure2) Figure2. Voltage follower circuit RF VIN VO + ● In case of using capacitive Feedback For a current feedback amplifier stability operation, do not use a compensation capacitor in parallel with feedback resistance. The dynamic impedance of capacitor in the feedback loop reduces the amplifier's stability. Figure3. Non-stability circuit example C RF RF RG VIN + (a). C connects in paraliel with RF - 10 - VO RG C VIN VO + (b). C connects to input pin Ver.2009-10-28 NJM2723 ■ MEMO [CAUTION] The specifications on this data book are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this data book 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.2009-10-28 - 11 -