NJU77000/NJU77001 NJU77002/NJU77004 1.5V, 0.23µA/ch, Ultralow Power, Rail-to-Rail Input/Output Single/Dual/Quad CMOS Operational Amplifier FEATURES (V+=5V) DESCRIPTION ●Supply Current NJU77000/NJU77001 NJU77002/NJU77004 ●Operating Voltage ●Input Offset Voltage NJU77000/NJU77001 NJU77002 NJU77004 ●Input Offset Voltage Drift ●Input Bias Current ●Unity Gain Frequency ●Slew Rate ●Rail-to-Rail Input/Output ●RF Noise Immunity ●CMOS Technology ●Package NJU77000 NJU77001 NJU77002 0.29µA typ. 0.23µA/ch typ. 1.5V to 5.5V 1.0mV max. 1.3mV max. 1.5mV max. 0.65µV/°C typ. 10pA max. 1.0kHz 0.7V/ms SOT-23-5 SC-88A, SOT-23-5 SOP8 JEDEC 150mil MSOP8 (TVSP)* *JEDEC MO-187-DA / thin type ESON8-U1 SSOP14 NJU77004 APPLICATIONS ●Battery powered Instruments ●Micro power oxygen sensor and gas sensor ●Power line monitoring ●Micropower current sensing ●Healthcare instruments TYPICAL CHARACTERISTIC The NJU77000/NJU77001/NJU77002/NJU77004 is single/dual/quad ultralow power 345nW/ch operational amplifiers designed to extend battery life and performance for portable applications. The operating voltage range of 1.5V to 5.5V and supply current of 0.29uA(single), 0.23uA/ch(dual/quad) typical, with stable over temperature and input voltage change make them ideal for micropower oxygen sensors, gas sensors and remote sensor applications. In addition to the ultralow power and low operating voltage, rail-to-rail input and output, input offset voltage of 1.0mV(single), 1.3mV(dual), 1.5mV(quad) maximum with 0.65uV/°C drift, input bias current of 10pA maximum and ability to drive 470pF loads, make the NJU77000 series ideal when requiring excellent performance in battery powered applications. NJU77000 series are specified normal grade (NJU7700x) and A-Grade (NJU7700xA). A-Grade is guaranteed lower offset voltage and supply voltage from -40 to +105 °C than the normal grade. The NJU77000 is available in the 5-pin SOT-23 package. NJU77001 is available in the 5-pin SOT-23 and SC-88A package. NJU77000 and NJU77001 have difference pin function (see pin configuration). The NJU77002 is available in the 8-pin SOP8: JEDEC 150mil, MSOP8 (TVSP8): JEDEC MO-187-DA / thin type and ESON that is thin and 2mm square small packages. The NJU77004 is available in 14-pin SSOP14 package. TYPICAL APPLICATION 100kΩ Sensor Supply Current per Amplifier vs. Temperature (NJU77002/NJU77004) + GV=0dB, VCM=V /2 Supply Current per Amplifier [μA] 0.4 0.3 0.2 To ADC Vin Vout 100kΩ V+=5.0V 1.8V 10MΩ Vout=Vin x 101 IQ=0.23µA/ch + V =3V to 2V @ end of life V+=1.5V V+=1.8V CR2032: coin type battery 220mAh = 13years @4circuit 0.1 40dB micropower sensor amplifier 0 -50 -25 0 25 50 75 100 Ambient Temperature [°C] 125 © New Japan Radio Co.,Ltd. Ver.04 [ 1] NJU77000/NJU77001 NJU77002/NJU77004 ■ PRODUCT INFORMATION VIO max. at 25°C IQ max. at 25°C Package / Product Name MSOP8 SOP8 JEDEC 150 mil. (TVSP8) IB max. at 25°C SC-88A SOT-23-5 ESON8-U1 SSOP14 1.0mV 0.39μA 10pA NJU77001AF3 NJU77000AF NJU77001AF - - - - 1.8mV 0.49μA - NJU77001F3 NJU77000F NJU77001F - - - - 1.3mV 2.0mV 1.5mV 2.2mV 0.66μA 0.76μA 1.22μA 1.32μA 10pA 10pA - - - NJU77002AE NJU77002ARB1 NJU77002AKU1 - - - NJU77002E NJU77002RB1 NJU77002KU1 - - - - - - NJU77004AV - - - - - NJU77004V ■ PIN CONFIGURATION (Top View) Pin Function OUTPUT 1 V- 2 +INPUT 3 (Top View) 5 V+ 4 -INPUT +INPUT 1 V- 2 -INPUT 3 5 V+ 4 OUTPUT Package Product Name SOT-23-5 NJU77000F NJU7700AF SOT-23-5 NJU77001F NJU77001AF SC-88A NJU77001F3 NJU77001AF3 (Top View) (Top View) Pin Function A OUTPUT 1 8 V+ A -INPUT 2 7 B OUTPUT A OUTPUT 1 A -INPUT 2 A +INPUT 3 6 B -INPUT A +INPUT 3 V- 4 5 B +INPUT V- 4 Exposed Pad on Underside 8 V+ 7 B OUTPUT 6 B -INPUT 5 B +INPUT Connect to exposed pad to V- Package Product Name SOP8 JEDEC 150 mil. NJU77002E NJU77002AE MSOP8(TVSP8) NJU77002RB1 NJU77002ARB1 ESON8-U1 NJU77002KU1 NJU77002AKU1 (Top View) Pin Function A OUTPUT 1 14 D OUTPUT A -INPUT 2 13 D -INPUT A +INPUT 3 12 D +INPUT V+ 4 11 V- B +INPUT 5 10 C +INPUT B -INPUT 6 9 C -INPUT B OUTPUT 7 8 C OUTPUT Package Product Name SSOP14 NJU77004V NJU77004AV © New Japan Radio Co.,Ltd. Ver.04 [ 2] NJU77000/NJU77001 NJU77002/NJU77004 ■ ABSOLUTE MAXIMUM RATINGS SYMBOL + Supply Voltage V -V Differential Input Voltage (1) Input Voltage Power Dissipation - VID RATING UNIT 7 V ±7 (2) - VIN + V - 0.3 to V + 0.3 (3) 390 SC-88A 280 SOP8 JEDEC 150 mil. V (2-layer) SOT23-5 PD 500 MSOP8(TVSP8) 410 ESON8-U1 360 SSOP14 400 Power Dissipation vs. Temperature 600 V mW Power Dissipation PD [mW] PARAMETER 500 SSOP14 400 MSOP8 (TVSP8) SOP8 JEDEC 150mil 300 200 SOT-23-5 ESON8-U1 100 SC-88A Operating Temperature Range Topr -40 to +105 °C Storage Temperature Range Tstg -55 to +125 °C 0 5 25 45 65 85 105 Ambient Temperature [ºC] 125 (1) Differential voltage is the voltage difference between +INPUT and -INPUT. (2) For supply voltage less than +7V, the absolute maximum rating is equal to the supply voltage. (3) Power dissipation is the power that can be consumed by the IC at Ta=25°C, and is the typical measured value based on JEDEC condition. When using the IC over Ta=25°C subtract the value [mW/°C]=PD/(Tstg(MAX)-25) per temperature. 2-layer: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layers, FR-4) mounting ■ RECOMMENDED OPERATING CONDITION (Ta=25°C) PARAMETER Supply Voltage SYMBOL + - V -V CONDITION MIN. 1.5 TYP. MAX. UNIT - 5.5 V © New Japan Radio Co.,Ltd. Ver.04 [ 3] NJU77000/NJU77001 NJU77002/NJU77004 ■ELECTRICAL CHARACTERISTICS + - (V =5V, V =0V, VCM=2.5V, RL=100kΩ to 2.5V, Ta=25°C, unless otherwise noted.) PARAMETER SYMBOL DC CHARACTERISTICS Supply Current (all channel) NJU77000/NJU77001 TEST CONDITION IQ Ta=-40°C to 105°C NJU77004 Ta=-40°C to 105°C VCM=0V Input Offset Voltage NJU77000/NJU77001 Ta=-40°C to 105°C NJU77002 VIO Ta=-40°C to 105°C NJU77004 Input Offset Voltage Drift NJU77000/NJU77001 NJU77002 NJU77004 Ta=-40°C to 105°C VCM=0V, Ta=-40°C to 105°C ΔVIO/ΔT Input Bias Current IB Input Offset Current IIO Voltage Gain AV Common-Mode Rejection Ratio CMR Supply Voltage Rejection Ratio SVR VOH Maximum Output Voltage VOL Common-Mode Input Voltage Range AC CHARACTERISTICS Slew Rate NJU77000/NJU77001 NJU77002/NJU77004 unity-Gain Frequency NJU77000/NJU77001 NJU77002/NJU77004 Phase Margin Gain Margin Equivalent Input Noise Voltage NJU77000/NJU77001 NJU77002/NJU77004 NJU7700x MIN. TYP. MAX. MIN. TYP. MAX. UNIT No Signal Ta=-40°C to 105°C NJU77002 NJU7700xA VICM Ta=-40°C to 105°C Ta=-40°C to 105°C Vout=0.5V to 4.5V Ta=-40°C to 105°C VCM=0V to 5V Ta=-40°C to 105°C + V =1.5V to 5.5V, VCM=0V Ta=-40°C to 105°C RL=100kΩ to 2.5V Ta=-40°C to 105°C RL=100kΩ to 2.5V Ta=-40°C to 105°C CMR≥60dB Ta=-40°C to 105°C - 0.29 0.46 0.92 - 0.39 0.39 0.66 0.66 1.22 1.22 - 0.29 0.46 0.92 - 0.49 0.76 1.32 - - 0.35 0.35 0.35 - 1 1.2 1.3 1.5 1.5 1.7 - 0.35 0.35 0.35 - 1.8 2.0 2.2 - -10 -100 -10 -100 70 70 60 60 70 70 4.9 4.9 0 0 0.65 0.65 0.65 1 1 100 80 90 4.95 0.05 - 17 21 24 10 100 10 100 0.1 0.1 5 5 70 60 70 4.9 0 - 0.65 0.65 0.65 1 1 100 80 90 4.95 0.05 - 0.1 5 - - 0.8 0.7 - - 0.8 0.7 - V/ms - 1.1 1.0 60 30 - - 1.1 1.0 60 30 - kHz - 600 - - 600 - nV/√Hz - 700 - - 700 - µA mV µV/deg pA pA dB dB dB V V V Gv=0dB, CL=20pF, VIN=1Vpp SR Gv=20dB, CL=20pF fT ΦM GM VNI CL=20pF CL=20pF f=100Hz deg dB © New Japan Radio Co.,Ltd. Ver.04 [ 4] NJU77000/NJU77001 NJU77002/NJU77004 ■ELECTRICAL CHARACTERISTICS + - (V =1.8V, V =0V, VCM=0.9V, RL=100kΩ to 0.9V, Ta=25°C, unless otherwise noted.) PARAMETER SYMBOL DC CHARACTERISTICS Supply Current (all channel) NJU77000/NJU77001 TEST CONDITION IQ Ta=-40°C to 105°C NJU77004 Ta=-40°C to 105°C VCM=0V Input Offset Voltage NJU77000/NJU77001 Ta=-40°C to 105°C NJU77002 VIO Ta=-40°C to 105°C NJU77004 Input Offset Voltage Drift NJU77000/NJU77001 NJU77002 NJU77004 Ta=-40°C to 105°C VCM=0V, Ta=-40°C to 105°C ΔVIO/ΔT Input Bias Current IB Input Offset Current IIO Voltage Gain AV Common-Mode Rejection Ratio CMR Supply Voltage Rejection Ratio SVR VOH Maximum Output Voltage VOL Common-Mode Input Voltage Range NJU7700x MIN. TYP. MAX. MIN. TYP. MAX. UNIT No Signal Ta=-40°C to 105°C NJU77002 NJU7700xA VICM Ta=-40°C to 105°C Ta=-40°C to 105°C Vout=0.5V to 1.3V Ta=-40°C to 105°C VCM=0V to 1.8V Ta=-40°C to 105°C + V =1.5V to 5.5V, VCM=0V Ta=-40°C to 105°C RL=100kΩ to 0.9V Ta=-40°C to 105°C RL=100kΩ to 0.9V Ta=-40°C to 105°C CMR≥55dB Ta=-40°C to 105°C - 0.26 0.42 0.84 - 0.36 0.36 0.62 0.62 1.17 1.17 - 0.26 0.42 0.84 - 0.46 0.72 1.27 - - 0.35 0.35 0.35 - 1 1.2 1.3 1.5 1.5 1.7 - 0.35 0.35 0.35 - 1.8 2.0 2.2 - -10 -100 -10 -100 70 70 55 55 70 70 1.7 1.7 0 0 0.65 0.65 0.65 1 1 100 80 90 1.75 0.05 - 17 21 24 10 100 10 100 0.1 0.1 1.8 1.8 70 55 70 1.7 0 - 0.65 0.65 0.65 1 1 100 80 90 1.75 0.05 - 0.1 1.8 - - 0.7 0.6 - - 0.7 0.6 - V/ms - 1.0 0.9 60 30 - - 1.0 0.9 60 30 - kHz - 700 - - 700 - nV/√Hz - 800 - - 800 - µA mV µV/deg pA pA dB dB dB V V V AC CHARACTERISTICS Slew Rate NJU77000/NJU77001 NJU77002/NJU77004 Unity-Gain Frequency NJU77000/NJU77001 NJU77002/NJU77004 Phase Margin Gain Margin Equivalent Input Noise Voltage NJU77000/NJU77001 NJU77002/NJU77004 Gv=0dB, CL=20pF, VIN=1Vpp SR Gv=20dB, CL=20pF fT ΦM GM VNI CL=20pF CL=20pF f=100Hz deg dB © New Japan Radio Co.,Ltd. Ver.04 [ 5] NJU77000/NJU77001 NJU77002/NJU77004 ■ TYPICAL CHARACTERISTICS Supply Current vs. Supply Voltage 0.5 0.4 Supply Current [μA] Ta=105°C Ta=25°C 0.3 0.2 Ta=-40°C 0.1 + V =5.0V 0.3 0.2 V+=1.5V 0 0 1 2 3 4 5 + Supply Voltage V [V] 6 7 -50 Supply Current per Amplifier vs. Supply Voltage -25 Supply Current per Amplifier [μA] Ta=105°C Ta=25°C 0.2 Ta=-40°C 0.1 125 (NJU77002/NJU77004) + GV=0dB, VCM=V /2 0.4 0.3 0 25 50 75 100 Ambient Temperature [°C] Supply Current per Amplifier vs. Temperature (NJU77002/NJU77004) + GV=0dB, VCM=V /2 0.4 0 0.3 V+=5.0V 0.2 + V+=1.8V V =1.5V 0.1 0 0 1 2 3 4 5 Supply Voltage [V] 6 7 -50 Input Offset Voltage vs. Temperature -25 125 + V =5.0V, VCM=0V, n=200 1.5 0 25 50 75 100 Ambient Temperature [°C] Input Offset Voltage vs. Temperature + V =1.8V, VCM=0V, n=200 1.5 1.0 Input Offset Voltage [mV] Input Offset Voltage [mV] V+=1.8V 0.1 0 Supply Current per Amplifier [μA] (NJU77000/NJU77001) + GV=0dB, VCM=V /2 0.5 0.4 Supply Current [μA] Supply Current vs. Temperature (NJU77000/NJU77001) + GV=0dB, VCM=V /2 0.5 0.0 -0.5 -1.0 -1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 -50 -25 0 25 50 75 100 Ambient Temperature [°C] 125 -50 -25 0 25 50 75 100 Ambient Temperature [°C] 125 © New Japan Radio Co.,Ltd. Ver.04 [ 6] NJU77000/NJU77001 NJU77002/NJU77004 ■ TYPICAL CHARACTERISTICS Input Offset Voltage Drift Distribution Input Offset Voltage Drift Distribution V+=5.0V, VCM=0V, n=3000 25% 20% Percent of Amplifiers 20% Percent of Amplifiers V+=1.8V, VCM=0V, n=3000 25% 15% 10% 15% 10% 5% 5% 0% 0% -4 -3.2 -2.4 -1.6 -0.8 -0 0.8 1.6 2.4 3.2 4 -4 -3.2 -2.4 -1.6 -0.8 -0 0.8 1.6 2.4 3.2 Input Offset Voltage Drift [μV/°C] Input Offset Voltage Drift [μV/°C] Input Offset Voltage vs. Common-Mode Input Voltage Input Offset Voltage vs. Common-Mode Input Voltage + 1.0 Ta=-40°C 0.5 0.0 Ta=25°C Ta=105°C -0.5 -1.0 -1.5 1.0 Ta=-40°C Ta=105°C 0.5 0.0 Ta=25°C -0.5 -1.0 -1.5 0 1.0 2.0 3.0 4.0 4.5 5.0 Common-Mode Input Voltage [V] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 Common-Mode Input Voltage [V] Common Mode and Supply Voltage Rejection Ratio vs. Temperature Input Offset Voltage vs. Supply Voltage VCM=0V 120 Common Mode and Supply Voltage Rejection Ratio [dB] 1.5 Input Offset Voltage [mV] V =1.8V 1.5 Input Offset Voltage [mV] Input Offset Voltage [mV] + V =5.0V 1.5 4 1.0 Ta=-40°C 0.5 0.0 Ta=25°C Ta=105°C -0.5 -1.0 -1.5 SVR 110 100 + CMR(V =5.0V) 90 80 70 + CMR(V =1.8V) 60 0 1 2 3 4 5 + Supply Voltage V [V] 6 7 -50 -25 0 25 50 75 100 Ambient Temperature [°C] 125 © New Japan Radio Co.,Ltd. Ver.04 [ 7] NJU77000/NJU77001 NJU77002/NJU77004 ■ TYPICAL CHARACTERISTICS Maximum Output Voltage vs. Output Current Maximum Output Voltage vs. Output Current + + V =5.0V, GV=OPEN Ta=-40°C Ta=25°C Ta=105°C 3.0 2.0 Ta=105°C Ta=25°C Ta=-40°C 1.0 0.1 1 10 Output Current [mA] Ta=-40°C Ta=25°C Ta=105°C 1.4 1.2 1.0 0.8 Ta=105°C Ta=25°C Ta=-40°C 0.6 0.4 0.2 ISINK 0.0 0.01 ISOURCE 1.6 Maximum Output Voltage [V] Maximum Output Voltage [V] ISOURCE 4.0 V =1.8V, GV=OPEN 1.8 ISINK 0.0 0.01 100 Voltage Gain vs. Temperature + + V =5.0V, GV=20dB, Ta=25°C 30 Gain + V =5.0V 20 110 100 + V =1.8V 90 80 CL=20pF 10 Voltage Gain [dB] Voltage Gain [dB] 10 Voltage Gain/Phase vs. Frequency + VCM=V /2, RL=100kΩ to V /2 120 0.1 1 Output Current [mA] 0 CL=100pF Phase 0 -30 -10 CL=330pF -20 -90 CL=20pF -30 70 -60 CL=470pF -120 CL=100pF CL=330pF -40 Phase [deg] 5.0 -150 CL=470pF 60 -50 -50 -25 0 25 50 75 100 Ambient Temperature [°C] 125 10 Pulse Response 100 1k Frequency [Hz] -180 10k Voltage Noise vs. Frequency + + V =5.0V, GV=0dB, RL=100kΩ to 2.5V, Ta=25°C V =5.0V, Gv=0dB, RL=100kΩ, Ta=25°C Equivalent Input Noise Voltage [nV/ Hz] 1400 Voltage [0.5V/div] 1200 3.0 1000 CL=20pF CL=550pF 2.5 NJU77002/NJU77004 800 600 400 2.0 NJU77000/NJU77001 200 Time [2ms/div] 0 1 10 100 Frequency [Hz] 1k © New Japan Radio Co.,Ltd. Ver.04 [ 8] NJU77000/NJU77001 NJU77002/NJU77004 ■ APPLICATION NOTE ■ Capacitive load The unity gain follower is the most sensitive configuration to capacitive loading. The combination of capacitive load placed directly on the output of an amplifier along with the output impedance of the amplifier creates a phase lag which in turn reduces the phase margin of the amplifier. If phase margin is significantly reduced, the response will be either underdamped or the amplifier will oscillate. The NJU77000/NJU77001/NJU77002/NJU77004 can directly drive capacitive loads of up to 470pF without oscillating. To drive heavier capacitive loads, an isolation resistor, RISO as shown Figure1, should be used. RISO improves the feedback loop’s phase margin by making the output load resistive at higher frequencies. The larger the value of RISO, the more stable the output voltage will be. However, larger values of RISO result in reduced output swing, reduced output current drive and reduced frequency bandwidth. Figure2 shows RISO values at unity gain follower without oscillating. After selecting RISO for your circuit, double-check the resulting frequency response peaking and step response overshoot. Modify RISO’s value until the response is reasonable. Isolation Resistance vs. Capacitive Load RISO VOUT VIN CL Isolation Resistance RISO [KΩ] 100 Unstable 10 1 0.1 100p Figure1. Isolating capacitive load GV=+1, Ta=25ºC Stable 1n 10n 100n Capacitive Load CL [F] 1μ Figure2. Isolation resistance to improve stability © New Japan Radio Co.,Ltd. Ver.04 [ 9] NJU77000/NJU77001 NJU77002/NJU77004 ■ PACKAGE DIMENSIONS 0.425±0.2 2.0±0.2 2 3 0-10° 0.05±0.05 0.9±0.1 +0.2 0.2- 0.1 0.65±0.07 +0.05 0.95- 0.15 1 0.425±0.2 +0.1 0.23-0.05 (0.245) 4 1.25±0.1 5 +0.1 0.13-0.03 2.1±0.2 1.3±0.2 Unit: mm SC-88A Package 2.9±0.2 0°~15° 1 2 2.8±0.2 0.6 4 +0.2 1.6 - 0.1 5 0.2MIN 1.9±0.2 3 0.95±0.1 +0.1 0.1-0.03 0.4±0.1 0.1 0.1MAX 1.1±0.1 0.6MAX Unit: mm SOT-23-5 Package © New Japan Radio Co.,Ltd. Ver.04 [ 10] NJU77000/NJU77001 NJU77002/NJU77004 ■ PACKAGE DIMENSIONS 0 ~ 10º 5.0±0.3 5 0.8±0.2 6.0±0.4 3.9±0.2 8 4 1 1.27 +0.1 0.20 - 0.05 0.15±0.1 1.5±0.15 0.74MAX 0.1 0.4±0.1 0.12 Unit: mm M SOP8 JEDEC 150mil Package 0~10° 2.9±0.1 1 0.55±0.1 4.0±0.2 5 2.8±0.1 8 4 +0.05 0.127-0.03 0.65 0.1±0.05 1.0MAX 0.475±0.1 0.08 0.2±0.05 Unit: mm 0.05 M MSOP8 (TVSP8) JEDEC MO-187-DA / thin type Package © New Japan Radio Co.,Ltd. Ver.04 [ 11] NJU77000/NJU77001 NJU77002/NJU77004 ■ PACKAGE DIMENSIONS Unit: mm ESON8-U1 Package +0.3 5.0 - 0.1 0 ~ 10º 0.5±0.2 4.4±0.2 6.4±0.3 8 14 7 1 0.65 +0.1 0.67MAX 1.15±0.1 0.15-0.05 0.1±0.1 Unit: mm 0.1 0.22±0.1 0.1 M SSOP14 Package [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. © New Japan Radio Co.,Ltd. Ver.04 [ 12]