NJU7028

NJU7028 13µA/ch, Rail-to-Rail Output Quad CMOS Operational Amplifier ■ GENERAL DESCRIPTION The NJU7028 is a low power, quad CMOS operational amplifier. It is tolerant to RF noise. The NJU7028 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 NJU7028 is ideal for low-side current sense amplifier. The very low supply current of the NJU7028 (13µA/ch) makes it suitable for battery-operated application. ■ PACKAGE OUTLINE NJU7028V (SSOP14) ■ FEATURES ●Low Supply Current ●Low Operating Voltage ●Rail-to-Rail Output IDD=13µA/ch typ. Vopr= 1.8V to 5.5V 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) ●Enhanced RF Noise Immunity ●CMOS Process ●Package SSOP14 ■ APPLICATION ●Battery-operated application ●Battery monitor ●Current sensor ●Photodiode amplification ■ PIN CONFIGURATION Top View 1 2 3 4 5 6 7 2 3 1 4 14 13 12 11 10 9 8 Pin Function 1. OUTPUT 1 2. -INPUT 2 3. +INPUT 2 4. VDD 5. +INPUT 2 6. -INPUT 2 7. OUTPUT 2 8. OUTPUT 3 9. -INPUT 3 10. +INPUT 3 11. VSS 12. +INPUT 4 13. -INPUT 4 14. OUTPUT 4 Ver.2011-04-06 -1- NJU7028 ■ ABSOLUTE MAXIMUM RATINGS (Ta=25˚C, unless otherwise noted.) PARAMETER SYMBOL RATINGS UNIT V V V mW ˚C ˚C Supply Voltage VDD +7 Input Common Mode Voltage VICM V SS -0.3 to V DD +0.3 Differential Input Voltage VID ± 7 (Note1) Power Dissipation PD 4 00 (Note2) Operating Temperature Range T opr -40 to +85 Storage Temperature Range T st g -55 to +125 (Note1) For supply voltage less than +7V, the absolute maximum rating is equal to the supply voltage. (Note2) EIA/JEDEC STANDARD Test board (114.3 x 76.2 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. Figure 1 Power Dissipation Derating Curve 600 (a)∆Pd=-4mW/°C(Note2) Power Dissipation Pd (mW) 500 400 300 200 100 0 5 25 45 65 85 105 Ambient Temperature Ta (°C) 125 ■ RECOMMENDED OPERATING CONDITION (Ta=25˚C) PARAMETER Supply Voltage SYMBOL V DD RATING 1 .8 to 5.5 UNIT V -2- Ver.2011-04-06 NJU7028 ■ ELECTRICAL CHARACTERISTICS ●DC CHARACTERISTICS (VDD=5V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER Supply Current Input Offset Voltage Input Offset Voltage drift Input Bias Current Input Offset Current Open loop gain Common Mode Rejection Ratio Supply Voltage Rejection Ratio Maximum Output Voltage 1 Maximum Output Voltage 2 Maximum Output Voltage 3 Common Mode Input Voltage Range SYMBOL IDD VIO ∆VIO/∆T IB IIO AV CMR SVR VOH1 VOL1 VOH2 VOL2 VOH3 VOL3 VICM VO=0.5V to 4.5V, RL=100kΩ to 2.5V VICM=0V to 4.1V VDD=1.8V to 5.5V RL=100kΩ to 2.5V RL=100kΩ to 2.5V RL=100kΩ to 0V RL=100kΩ to 0V Isource=1mA Isink=1mA CMR≥65dB TEST CONDITION No Signal VIC=0V, RS=50Ω MIN. 70 65 70 4.9 4.9 4.8 0 TYP. 48 0.9 1.5 1 1 90 80 90 4.95 0.05 4.95 0.02 4.85 0.15 MAX. 72 4 0.1 0.05 0.2 4.1 UNIT µA mV µV/ºC pA pA dB dB dB V V V V V V V ●AC CHARACTERISTICS (VDD=5V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER Gain Bandwidth Product Phase Margin Gain Margin Equivalent Input Noise Voltage Slew Rate SYMBOL GBW M TEST CONDITION RL=100kΩ to 2.5V, CL=20pF, f=10kHz RL=100kΩ to 2.5V, CL=20pF RL=100kΩ to 2.5V, CL=20pF f=1kHz GV=0dB, RL=100kΩ to 2.5V, CL=20pF, Vin=3Vpp (1V to 4V) (Note4) (Note5) GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vin=2.5Vpp (1.25V to 3.75V), Vo≥4.8Vpp (Note6) GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vo=4Vpp, f=100Hz (Note6) MIN. - TYP. 160 80 15 50 0.05 MAX. - UNIT kHz deg dB nV/√ Hz V/us GM en SR Power Bandwidth PBW - 5 - kHz Total Harmonic Distortion THD - 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.2011-04-06 -3- NJU7028 ■ ELECTRICAL CHARACTERISTICS ●DC CHARACTERISTICS (VDD=3V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER Supply Current Input Offset Voltage Input Offset Voltage drift Input Bias Current Input Offset Current Open loop gain Common Mode Rejection Ratio Supply Voltage Rejection Ratio Maximum Output Voltage 1 Maximum Output Voltage 2 Maximum Output Voltage 3 Common Mode Input Voltage Range SYMBOL IDD VIO ∆VIO/∆T IB IIO AV CMR SVR VOH1 VOL1 VOH2 VOL2 VOH3 VOL3 VICM Vo=0.5V to 2.5V, RL=100kΩ to 1.5V VICM=0V to 2.1V VDD=1.8V to 5.5V RL=100kΩ to 1.5V RL=100kΩ to 1.5V RL=100kΩ to 0V RL=100kΩ to 0V Isource=1mA Isink=1mA CMR≥65dB TEST CONDITION No Signal Vic=0V, RS=50Ω MIN. 70 65 70 2.9 2.9 2.8 0 TYP. 45 0.9 1.5 1 1 90 80 90 2.95 0.05 2.95 0.02 2.85 0.15 MAX. 68 4 0.1 0.05 0.2 2.1 UNIT µA mV µV/ºC pA pA dB dB dB V V V V V V V ●AC CHARACTERISTICS (VDD=3V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER Gain Bandwidth Product Phase Margin Gain Margin Equivalent Input Noise Voltage Slew Rate SYMBOL GBW M TEST CONDITION RL=100kΩ to 1.5V, CL=20pF, f=10kHz RL=100kΩ to 1.5V, CL=20pF RL=100kΩ to 1.5V, CL=20pF f=1kHz GV=0dB, RL=100kΩ to 1.5V, CL=20pF, Vin=1Vpp (1V to 2V) (Note4) (Note5) GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vin=1.5Vpp (0.75V to 2.25V), Vo≥2.8Vpp (Note6) GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vo=2Vpp, f=100Hz (Note6) MIN. - TYP. 150 80 15 50 0.05 MAX. - UNIT kHz deg dB nV/√ Hz V/us GM en SR Power Bandwidth PBW - 8 - kHz Total Harmonic Distortion THD - 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.2011-04-06 NJU7028 ■ ELECTRICAL CHARACTERISTICS ●DC CHARACTERISTICS (VDD=1.8V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER Supply Current Input Offset Voltage Input Offset Voltage drift Input Bias Current Input Offset Current Open loop gain Common Mode Rejection Ratio Supply Voltage Rejection Ratio Maximum Output Voltage 1 Maximum Output Voltage 2 Maximum Output Voltage 3 Common Mode Input Voltage Range SYMBOL IDD VIO ∆VIO/∆T IB IIO AV CMR SVR VOH1 VOL1 VOH2 VOL2 VOH3 VOL3 VICM Vo=0.5V to 2.5V, RL=100kΩ to 0.9V VICM=0V to 0.9V VDD=1.8V to 5.5V RL=100kΩ to 0.9V RL=100kΩ to 0.9V RL=100kΩ to 0V RL=100kΩ to 0V Isource=0.5mA Isink=0.5mA CMR≥65dB TEST CONDITION No Signal Vic=0V, RS=50Ω MIN. 70 65 70 1.7 1.7 1.5 0 TYP. 43 0.9 1.5 1 1 90 80 90 1.75 0.05 1.75 0.02 1.55 0.25 MAX. 65 4 0.1 0.05 0.3 0.9 UNIT µA mV µV/ºC pA pA dB dB dB V V V V V V V ●AC CHARACTERISTICS (VDD=1.8V, VSS=0V, Ta=25˚C, unless otherwise noted.) PARAMETER Gain Bandwidth Product Phase Margin Gain Margin Equivalent Input Noise Voltage Slew Rate SYMBOL GBW M TEST CONDITION RL=100kΩ to 0.9V, CL=20pF, f=10kHz RL=100kΩ to 0.9V, CL=20pF RL=100kΩ to 0.9V, CL=20pF f=1kHz GV=0dB, RL=100kΩ to 1.5V, CL=20pF, Vin=0.5Vpp (0.3V to 0.8V) (Note4) (Note7) GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vin=0.9Vpp (0V to 0.9V), Vo≥1.6Vpp (Note8) GV=6dB, RF=50kΩ, RG=50kΩ, CL=20pF, Vo=1Vpp, f=100Hz (Note8) MIN. - TYP. 140 80 15 50 0.05 MAX. - UNIT kHz deg dB nV/√ Hz V/us GM en SR Power Bandwidth PBW - 14 - kHz Total Harmonic Distortion THD - 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.2011-04-06 -5- NJU7028 ■ MEASUREMENT CIRCUITS Vin VDD Vout Vin VDD Vout RL CL RL CL VDD 2 Figure 2-1:Measurement circuit 1 Figure 2-2:Measurement circuit 2 Vin VDD Vout Vin VDD Vout CL CL RF RG VDD 2 RF RG Figure 2-3:Measurement circuit 3 Figure 2-4:Measurement circuit 4 -6- Ver.2011-04-06 NJU7028 ■ TYPICAL CHARACTERISTICS Supply Current vs. Supply Voltage (Temperature) 60 50 Supply Current [µA] Ta=25ºC GV=0dB Supply Current vs. Temperature (Supply Voltage) GV=0dB 60 VDD=5.5V VDD=5.0V Ta=85ºC Ta=125ºC 50 Supply Current [µA] 40 30 20 10 0 0 1 2 3 4 5 Supply Voltage [V] 6 7 Ta=-40ºC Ta=-50ºC 40 VDD=1.8V VDD=3.0V 30 20 10 0 -50 -25 0 25 50 75 100 Ambient Temperature [ºC] Input Offset Voltage vs. Common Mode Input Voltage (Temperature) VDD=3V 125 Input Offset Voltage vs. Temperature (Supply Voltage) VICM=VDD/2 4.0 3.0 Input Offset Voltage [mV] VDD=1.8V VDD=3V 4.0 3.0 Input Offset Voltage [mV] 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -50 -25 0 25 50 75 100 Ambient Temperature [ºC] 125 VDD=5V 2.0 Ta=-40ºC 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -2.0 Ta=25ºC Ta=85ºC -1.0 0.0 1.0 2.0 3.0 Common Mode Input Voltage [V] 4.0 Input Offset Voltage Distribution VDD=5V, VICM=0V, Ta=25ºC, n=240 Input Offset Voltage Drift Distribution VDD=5V, VICM=0V, Ta=-40 to 85ºC, n=240 120 110 100 Number of Amplifier 120 110 100 Number of Amplifier 90 80 70 60 50 40 30 20 10 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] 90 80 70 60 50 40 30 20 10 0 -9.0 -7.0 -5.0 -3.0 -1.0 1.0 3.0 5.0 7.0 9.0 Input Offset Voltage Drift [µV/ºC] Ver.2011-04-06 -7- NJU7028 ■ TYPICAL CHARACTERISTICS CMR vs. Temperature (Supply Voltage) 140 Common Mode Rejection Ratio [dB] VICM=0V → VDD-0.9V SVR vs. Temperature 120 Supply Voltage Rejection Ratio [dB] VDD=1.8V → 5.5V 120 100 80 60 40 20 0 -50 -25 VDD=3V VDD=5V 100 80 60 40 20 0 VDD=1.8V 0 25 50 75 100 Ambient Temperature [ºC] 125 -50 -25 0 25 50 75 100 Ambient Temperature [ºC] 125 Gain vs. Temperature 120 100 Output Voltage [V] Voltage Gain [dB] VO=0V → VDD-0.5V, RL=100kΩ to 0V Output Voltage vs. Output Current (Temperature) VDD=5V, VCM=2.5V 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 Ta=85ºC Ta=25ºC Ta=-40ºC Ta=85ºC Ta=25ºC Ta=-40ºC VDD=5V 80 60 40 20 0 -50 -25 VDD=3V VDD=1.8V 0 25 50 75 100 Ambient Temperature [ºC] 125 0.0 0.001 0.01 0.1 1 10 Output Current [mA] 100 Output Voltage vs. Output Current (Temperature) VDD=3V, VCM=1.5V Output Voltage vs. Output Current (Temperature) VDD=1.8V, VCM=0.9V 3.0 2.5 Output Voltage [V] Ta=85ºC Ta=25ºC Ta=-40ºC 1.8 1.5 Output Voltage [V] Ta=85ºC Ta=25ºC Ta=-40ºC 2.0 1.5 1.0 1.2 0.9 0.6 0.3 0.0 0.001 Ta=85ºC Ta=85ºC Ta=25ºC Ta=-40ºC 0.5 0.0 0.001 Ta=25ºC Ta=-40ºC 0.01 0.1 1 10 Output Current [mA] 100 0.01 0.1 1 10 Output Current [mA] 100 -8- Ver.2011-04-06 NJU7028 ■ TYPICAL CHARACTERISTICS Gain / Phase vs. Frequency RF=1MΩ, RG=10kΩ, RL=100kΩ, CL=20pF, Ta=25ºC Gain / Phase vs. Frequency (Load Capacitance) VDD=3V, RF=1MΩ, RG=10kΩ, RL=100kΩ, Ta=25ºC 60 40 Voltage Gain [dB] Gain VDD=5V VDD=3V 180 120 60 0 VDD=5V 60 Gain CL=150pF CL=100pF CL=20pF 180 120 60 Phase 40 Voltage Gain [dB] Phase [deg] Phase 0 -20 -40 -60 100 0 -20 -40 -60 100 CL=20pF 0 -60 -120 -180 10M -60 -120 VDD=1.8V VDD=3V CL=150pF CL=100pF 1k 10k 100k Frequency[Hz] 1M -180 10M 1k 10k 100k Frequency [Hz] 1M Voltage Noise vs. Frequency VDD=3V, GV=40dB, RF=100kΩ, RG=1kΩ, Ta=25ºC THD+Noise vs. Output Voltage VDD=3V, Gv=6dB, RF=50kΩ, CL=20pF BW=10Hz-500kHz, Ta=25ºC 200 Total Harmonic Distortion+Noise[%] 10 Equivalent Input Noise Voltage [nV/√Hz] 180 160 140 120 100 80 60 40 20 0 1 10 100 Frequency [Hz] 1k 10k 1 0.1 0.01 f=100Hz f=20Hz 0.001 0.001 0.01 0.1 1 Output Voltage [Vrms] 10 Channel Separation vs. Frequency VDD=3V, GV=40dB, RF=100kΩ, RL=open, VO=0.5Vrms, Ta=25ºC -60 -70 Channel Separation [dB] -80 -90 -100 -110 -120 -130 -140 -150 10 100 1k 10k Frequency [Hz] 100k A→D A→B A→C Ver.2011-04-06 -9- Phase [deg] 20 VDD=1.8V 20 NJU7028 ■ TYPICAL CHARACTERISTICS Pulse Response (Load Capacitance) VDD=3V, Gv=0dB, RL=100kΩ, Ta=25ºC Pulse Response (Load Capacitance) VDD=3V, Gv=0dB, RL=100kΩ, Ta=25ºC 3 2 2 INPUT 1 1 0 -1 CL=20pF 3 2 2 0.5V/div. INPUT 1 1 0 -1 CL=100pF OUTPUT CL=20pF 0.5V/div. 1 1 0 OUTPUT 1 1 0 -1 CL=120pF CL=100pF -1 -2 -2 -3 -2 -2 -3 -1 -1 0 0 0 -1 -1 0 0 0 CL=120pF 0 10µs/div. 0 0 0 0 0 0 10µs/div. 0 0 0 0 0 [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. - 10 - Ver.2011-04-06