NJU7027 13μA/ch, Rail-to-Rail Output Dual CMOS Operational Amplifier ■ GENERAL DESCRIPTION The NJU7027 is a low power, dual CMOS operational amplifier. It is tolerant to RF noise. The NJU7027 can operate from a single-supply voltage of +1.8V to +5.5V. In addition, this amplifier features Rail-to-Rail output and low input bias current (1pA). Because of these features, the NJU7027 is ideal for low side current sense amplifier. The very low supply current of the NJU7027 (13μA/ch) makes it suitable for battery-operated application. ■ PACKAGE OUTLINE NJU7027RB1 ■ FEATURES •Low Supply Current 13μA/ch typ. (at VDD= 5V), 12μA/ch typ. (at VDD= 3V) 11μA/ch typ. (at VDD= 1.8V) •Low Operating Voltage Vopr= 1.8V to 5.5V •Rail-to-Rail Output VOH=4.9V min./ VOL=0.1V max. (at VDD= 5V, RL=100kΩ) VOH=4.8V min./ VOL=0.2V max. (at VDD= 5V, IO=1mA) •Package TVSP8 •Enhanced RF Noise Immunity •CMOS Process ■ APPLICATION •Battery-operated application •Battery monitor •Current sensor •Photodiode amplification ■ PIN CONFIGURATION (Top View) 1 8 2 7 3 6 4 5 Ver.2010-10-26 PIN FUNCTION 1. A OUTPUT 2. A -INPUT 3. A +INPUT 4. GND 5. B +INPUT 6. B –INPUT 7. B OUTPUT 8. V+ -1- NJU7027 ■ ABSOLUTE MAXIMUM RATINGS (Ta=25˚C, unless otherwise noted.) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VDD +7 Input Common Mode Voltage VICM V S S -0.3 to V DD +0.3 Differential Input Voltage VID ±7 (Note1) Power Dissipation PD 410 (Note2) Operating Temperature Range T op r -40 to +85 Storage Temperature Range Tstg -55 to +125 (Note1) For supply voltage less than +7V, the absolute maximum rating is equal to the supply voltage. V V V mW ˚C ˚C (Note2) EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 2layers, FR-4) mounting. (Note3) Do not exceed “Power dissipation: PD” in which power dissipation in IC is shown by the absolute maximum rating. See Figure “Power Dissipation Curve” when ambient temperature is over 25˚C. Figure1 Power Dissipation Derating Curve 600 Power Dissipation Pd (mW) δPd=-4.1mW/ºC(Note2) 500 400 300 200 100 0 5 25 45 65 85 105 125 Ambient Temperature Ta (ºC) ■ RECOMMENDED OPERATING CONDITION(Ta=25˚C) -2- PARAMETER SYMBOL RATING UNIT Supply Voltage V DD 1.8 to 5.5 V Ver.2010-10-26 NJU7027 ■ ELECTRICAL CHARACTERISTICS DC CHARACTER (VDD=5V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Supply Current IDD No Signal - 26 40 µA Input Offset Voltage Input Offset Voltage drift Input Bias Current VIO ΔVio/ΔT IB Vic=0V, RS=50Ω - 0.9 1.5 1 4 - mV µV/ºC pA - 1 - pA Vo=0.5V to 4.5V, RL=100kΩ to 2.5V 70 90 - dB B Input Offset Current IIO Open loop gain AV Common Mode Rejection Ratio CMR VICM=0V to 4.1V 65 80 - dB Supply Voltage Rejection Ratio SVR VDD=1.8V to 5.5V 70 90 - dB VOH1 RL=100kΩ to 2.5V 4.9 4.95 - V VOL1 RL=100kΩ to 2.5V - 0.05 0.1 V VOH2 RL=100kΩ to 0V 4.9 4.95 - V VOL2 RL=100kΩ to 0V - 0.02 0.05 V VOH3 Isource=1mA 4.8 4.85 - V VOL3 Isink=1mA - 0.15 0.2 V VICM CMR≥65dB 0 - 4.1 V Maximum Output Voltage 1 Maximum Output Voltage 2 Maximum Output Voltage 3 Common Mode Input Voltage Range AC CHARACTER (VDD=5V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Gain Bandwidth Product GBW RL=100kΩ to 2.5V, CL=20pF, f=10kHz - 160 - kHz Phase Margin φM RL=100kΩ to 2.5V, CL=20pF - 80 - deg Gain Margin GM RL=100kΩ to 2.5V, CL=20pF - 15 - dB Equivalent Input Noise Voltage en f=1kHz - 50 - nV/√Hz Channel Separation CS f=1kHz - 120 - dB Slew Rate SR GV=0dB, RL=100kΩ to 2.5V, CL=20pF, Vin=3Vpp (1V to 4V) (Note4) (Note5) - 0.05 - V/us Power Bandwidth PBW GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vin=2.5Vpp (1.25V to 3.75V), Vo≥4.8Vpp (Note6) - 5 - kHz Total Harmonic Distortion THD GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vo=4Vpp, f=100Hz (Note6) - 0.01 - % (Note4) Slew rate is defined by the lower value of the rise or fall. (Note5) See figure2-1 for test circuit. (Note6) See figure2-3 for test circuit. Ver.2010-10-26 -3- NJU7027 ■ ELECTRICAL CHARACTERISTICS DC CHARACTER (VDD=3V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Supply Current IDD No Signal - 24 36 µA Input Offset Voltage Input Offset Voltage drift Input Bias Current VIO ΔVio/ΔT IB Vic=0V, RS=50Ω - 0.9 1.5 1 4 - mV µV/ºC pA - 1 - pA Vo=0.5V to 2.5V, RL=100kΩ to 1.5V 70 90 - dB B Input Offset Current IIO Open loop gain AV Common Mode Rejection Ratio CMR VICM=0V to 2.1V 65 80 - dB Supply Voltage Rejection Ratio SVR VDD=1.8V to 5.5V 70 90 - dB VOH1 RL=100kΩ to 1.5V 2.9 2.95 - V VOL1 RL=100kΩ to 1.5V - 0.05 0.1 V VOH2 RL=100kΩ to 0V 2.9 2.95 - V VOL2 RL=100kΩ to 0V - 0.02 0.05 V VOH3 Isource=1mA 2.8 2.85 - V VOL3 Isink=1mA - 0.15 0.2 V VICM CMR≥65dB 0 - 2.1 V Maximum Output Voltage 1 Maximum Output Voltage 2 Maximum Output Voltage 3 Common Mode Input Voltage Range AC CHARACTER (VDD=3V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Gain Bandwidth Product GBW RL=100kΩ to 1.5V, CL=20pF, f=10kHz - 150 - kHz Phase Margin φM RL=100kΩ to 1.5V, CL=20pF - 80 - deg Gain Margin GM RL=100kΩ to 1.5V, CL=20pF - 15 - dB Equivalent Input Noise Voltage en f=1kHz - 50 - nV/√Hz Channel Separation CS f=1kHz - 115 - dB Slew Rate SR GV=0dB, RL=100kΩ to 1.5V, CL=20pF, Vin=1Vpp (1V to 2V) (Note4) (Note5) - 0.05 - V/us Power Bandwidth PBW GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vin=1.5Vpp (0.75V to 2.25V), Vo≥2.8Vpp (Note6) - 8 - kHz Total Harmonic Distortion THD GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vo=2Vpp, f=100Hz (Note6) - 0.01 - % (Note4) Slew rate is defined by the lower value of the rise or fall. (Note5) See figure2-1 for test circuit. (Note6) See figure2-3 for test circuit. -4- Ver.2010-10-26 NJU7027 ■ ELECTRICAL CHARACTERISTICS DC CHARACTER (VDD=1.8V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Supply Current IDD No Signal - 22 34 µA Input Offset Voltage Input Offset Voltage drift Input Bias Current VIO ΔVio/ΔT IB Vic=0V, RS=50Ω - 0.9 1.5 1 4 - mV µV/ºC pA Input Offset Current IIO - 1 - pA B Open loop gain AV Vo=0.5V to 2.5V, RL=100kΩ to 0.9V 70 90 - dB Common Mode Rejection Ratio CMR VICM=0V to 0.9V 65 80 - dB Supply Voltage Rejection Ratio Maximum Output Voltage 1 Maximum Output Voltage 2 Maximum Output Voltage 3 Common Mode Input Voltage Range SVR VDD=1.8V to 5.5V 70 90 - dB VOH1 RL=100kΩ to 0.9V 1.7 1.75 - V VOL1 RL=100kΩ to 0.9V - 0.05 0.1 V VOH2 RL=100kΩ to 0V 1.7 1.75 - V VOL2 RL=100kΩ to 0V - 0.02 0.05 V VOH3 Isource=0.5mA 1.5 1.55 - V VOL3 Isink=0.5mA - 0.25 0.3 V VICM CMR≥65dB 0 - 0.9 V AC CHARACTER (VDD=1.8V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. Gain Bandwidth Product GBW Phase Margin φM MAX. UNIT RL=100kΩ to 0.9V, CL=20pF, f=10kHz - RL=100kΩ to 0.9V, CL=20pF - 140 - kHz 80 - deg Gain Margin GM RL=100kΩ to 0.9V, CL=20pF - 15 - dB Equivalent Input Noise Voltage en f=1kHz - 50 - nV/√Hz Channel Separation CS f=1kHz - 110 - dB Slew Rate SR GV=0dB, RL=100kΩ to 1.5V, CL=20pF, Vin=0.5Vpp (0.3V to 0.8V) (Note4) (Note7) - 0.05 - V/us Power Bandwidth PBW GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vin=0.9Vpp (0V to 0.9V), Vo≥1.6Vpp (Note8) - 14 - kHz Total Harmonic Distortion THD GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vo=1Vpp, f=100Hz (Note8) - 0.01 - % (Note4) Slew rate is defined by the lower value of the rise or fall. (Note7) See figure2-2 for test circuit. (Note8) See figure2-4 for test circuit.. Ver.2010-10-26 -5- NJU7027 ■ MEASUREMENT CIRCUITS VDD Vin VDD Vin Vout Vout RL RL CL CL VDD 2 Figure 2-1:Measurement circuit 1 Vin Figure 2-2:Measurement circuit 2 Vin VDD VDD Vout Vout CL CL RF RG RF RG VDD 2 Figure 2-3:Measurement circuit 3 -6- Figure 2-4:Measurement circuit 4 Ver.2010-10-26 NJU7027 ■ TYPICAL CHARACTERISTICS Supply Current vs. Supply Voltage (Temperature) Supply Current vs. Temperature (Supply Voltage) GV=0dB GV=0dB 30 30 Ta=85ºC 20 15 Ta=-40ºC Ta=-50ºC 10 20 10 5 0 0 0 1 2 3 4 5 Supply Voltage [V] 6 7 -50 -25 0 25 50 75 100 Ambient Temperature [ºC] Input Offset Voltage vs. Temperature Input Offset Voltage vs. Common Mode Input Voltage (Supply Voltage) VICM=VDD/2 (Temperature) VDD=3V 4.0 125 5.0 4.0 VDD=1.8V VDD=3V 2.0 1.0 0.0 VDD=5V -1.0 -2.0 -3.0 Input Offset Voltage[mV] 3.0 Input Offset Voltage[mV] VDD=3V VDD=1.8V 15 5 3.0 Ta=-40ºC 2.0 1.0 0.0 Ta=85ºC Ta=25ºC -1.0 -2.0 -4.0 -3.0 -50 -25 0 25 50 75 100 125 150 Ambient Temperature[ºC] -2.0 50 45 45 40 40 Number of Amplifier 50 30 25 20 15 35 30 25 20 15 10 10 5 5 0 4.0 VDD=3V, VICM=0V, Ta=-40 to 85ºC, n=100 VDD=3V, VICM=0V, Ta=25ºC, n=100 35 -1.0 0.0 1.0 2.0 3.0 Common Mode Input Voltage[V] Input Offset Voltage Drift Distribution Input Offset Voltage Distribution Number of Amplifier VDD=5V VDD=5.5V 25 Supply Current [μA] Supply Current [μA] Ta=125ºC Ta=25ºC 25 0 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5 4.5 Input Offset Voltage[mV] Ver.2010-10-26 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5 4.5 Input Offset Voltage Drift [μV/ºC] -7- NJU7027 ■ TYPICAL CHARACTERISTICS CMR vs. Temperature (Supply Voltage) VDD=5V 100 VDD=3V 80 VDD=1.8V 60 40 20 0 100 80 60 40 20 0 -50 -25 0 25 50 75 100 Ambient Temperature [ºC] 125 -50 -25 0 25 50 75 100 Ambient Temperature [ºC] VDD=5V, VCM=2.5V 5.0 120 VDD=5V 4.5 100 Ta=85ºC VDD=3V Output Voltage [V] 4.0 80 125 Output Voltage vs. Output Current (Temperature) Gain vs. Temperature VO=0.5V to VDD-0.5V, RL=100kΩ to VDD/2 Voltage Gain [dB] VDD=1.8V to 5.5V 120 Supply Voltage Rejection Ratio [dB] 120 Common Mode Rejection Ratio [dB] SVR vs. Temperature VICM=0V to VDD-0.9V VDD=1.8V 60 40 20 Ta=25ºC 3.5 Ta=-40ºC 3.0 2.5 2.0 1.5 Ta=85ºC 1.0 Ta=-40ºC Ta=25ºC 0.5 0 -50 -25 0 25 50 75 100 Ambient Temperature [ºC] 0.0 0.001 125 Output Voltage vs. Output Current (Temperature) 0.01 0.1 1 10 Output Current [mA] 100 Output Voltage vs. Output Current (Temperature) VDD=3V, VCM=1.5V VDD=1.8V, VCM=0.9V 3.0 1.8 Ta=85ºC 2.5 1.5 Ta=85ºC Ta=25ºC Output Voltage [V] Output Voltage [V] Ta=25ºC Ta=-40ºC 2.0 1.5 1.0 Ta=85ºC Ta=-40ºC 1.2 0.9 0.6 Ta=85ºC Ta=25ºC Ta=25ºC Ta=-40ºC 0.5 0.0 0.001 -8- 0.01 0.1 1 10 Output Current [mA] 0.3 100 0.0 0.001 Ta=-40ºC 0.01 0.1 1 10 Output Current [mA] 100 Ver.2010-10-26 NJU7027 ■ TYPICAL CHARACTERISTICS Closed-Loop Gain/Phase vs. Frequency Open-Loop Gain/Phase vs. Frequency (Supply Voltage) RF=1MΩ, RG=1KΩ, RL=100KΩ, CL=20pF, Ta=25ºC (Load Capacitance) VDD=3V, RF=1MΩ, RG=1kΩ, RL=100kΩ, Ta=25ºC 60 180 60 180 Gain Gain VDD=5V 120 CL=20pF 40 VDD=1.8V 60 Phase 0 0 VDD=5V -20 -40 VDD=3V Voltage Gain [dB] CL=150pF Phase[deg] Voltage Gain [dB] VDD=3V 20 120 CL=100pF -60 -120 20 60 Phase[deg] 40 Phase 0 0 CL=20pF -20 -60 -40 -120 CL=150pF VDD=1.8V CL=100pF -60 100 1k 10k 100k Frequency[Hz] 1M -180 10M -60 100 1k 10k 100k Frequency[Hz] 1M -180 10M THD+Noise vs. Output Voltage Voltage Noise vs. Frequency VDD=3V, Gv=6dB, RF=50kΩ, CL=20pF BW=10Hz-500kHz, Ta=25ºC VDD=3V, GV=40dB, RF=100kΩ, RG=1kΩ, Ta=25ºC 10 Total Harmonic Distortion+Noise [%] 200 Equivalent Input Noise Voltage [nV/√Hz] 175 150 125 100 75 50 25 1 0.1 0.01 f=100Hz f=20Hz 0 1 10 100 Frequency [Hz] 1k 10k 0.001 0.001 0.01 0.1 1 Output Voltage [Vrms] 10 Channel Separation vs. Frequency VDD=3V, GV=-100, RS=1k, RL=open, VO=0.5Vrms, Ta=25ºC -60 Channel Separation [dB] -70 -80 A to B -90 -100 -110 B to A -120 -130 -140 -150 10 Ver.2010-10-26 100 1k 10k Frequency [Hz] 100k -9- NJU7027 ■ TYPICAL CHARACTERISTICS Pulse Response (Load Capacitance) Pulse Response (Load Capacitance) VDD=3V, Gv=0dB, RL=100kΩ, Ta=25ºC VDD=3V, Gv=0dB, RL=100kΩ, Ta=25ºC 2.5 2.0 1.0 2.5 0.5 2.0 1.0 0.5 1.5 0.5V/div. INPUT 1.0 0.5 0.0 1.5 0.0 -0.5 1.0 -0.5 -1.0 0.5V/div. INPUT 0.5 OUTPUT 0.0 OUTPUT CL=100pF -1.0 - 10 - 0.0 0.0 -2.0 -0.5 -2.5 -1.0 CL=20pF -1.5 CL=120pF -0.5 0.0 -1.5 -1.0 CF=100pF CL=20pF 0.0 0.010μs/div. 0.0 0.0 0.0 0.0 0.1 CL=120pF -2.0 -2.5 0.0 0.0 0.0 0.010μs/div. 0.0 0.0 0.0 0.0 0.1 Ver.2010-10-26 NJU7027 ■ 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.2010-10-26 - 11 -