NJU7076/NJU7077/NJU7078

Transcription

1 NJU776/NJU777/NJU778 Precision, Low Noise, Rail-to-Rail Output, CMOS Operational Amplifier GENERAL DESCRIPTION The NJU776/NJU777/NJU778 is a high precision Rail-to-Rail output Single/Dual/Quad CMOS operational amplifier featuring a low noise of 1nV/ Hz typ., low input offset voltage of 15µV max., low temperature drift of.5µv/ C typ. and low bias current of 1pA typ.. The output swing can reach 2 mv from the rails, while driving a 1kΩ load (at 5V operation). The NJU776/NJU777/ NJU778 also has a high RF noise immunity which can reduce malfunctions caused by RF noises from mobile phones and others. The combination of these specifications makes the NJU776/ NJU777/NJU778 well-suited for sensor applications such as a temperature sensor, weight sensor and others, high precision current sensing amplifiers and current voltage converters. PACKAGE OUTLINE NJU776F (SOT-23-5) NJU778V (SSOP1) NJU777R (MSOP8(VSP8)) FEATURES High Precision Low Offset Voltage NJU776/NJU777 NJU778 Low Offset Voltage Drift Low Noise Low Input Bias Current Rail-to-Rail Output R L =1kΩ 15μV max. 2μV max..5μv/ C typ. 1nV/ Hz typ. 1pA typ..2v to.98v typ. (V + =5V) R L =6Ω.8V to.92v typ. (V + =5V) Ground sense RF Noise Immunity Operating Voltage 2.2V to 5.5V Unity-Gain Stable Package NJU776 NJU777 NJU778 SOT-23-5 MSOP8(VSP8)* *MEET JEDEC MO-187-DA SSOP1 APPLICATIONS Thermocouple / Thermopile Amplifiers Strain Gauge / Pressure sensor Amplifiers Load Cell and Bridge Transducer Amplifiers High Resolution Data Acquisition Precision Current Sensing Battery monitoring Photo-Diode pre amplifier Ver.5 [1]

2 NJU776/NJU777/NJU778 PIN CONFIGURATION (Top View) OUTPUT (Top View) A OUTPUT V + A -INPUT 2 (Top View) 8 7 V + B OUTPUT A OUTPUT A -INPUT A +INPUT V D OUTPUT D -INPUT D +INPUT V - V - +INPUT 2 3 -INPUT A +INPUT V B -INPUT B +INPUT B +INPUT B -INPUT B OUTPUT C +INPUT C -INPUT C OUTPUT NJU776F NJU777R NJU778V ABSOLUTE MAXIMUM RATINGS(Ta=25 C, unless otherwise noted.) PARAMETER SYMBOL RATING UNIT Supply Voltage V + - V - 7 (1) V Differential Input Voltage (2) V ID ±7 (3) V Input Voltage V IN V to V V Power Dissipation () P D (2-layer / -layer) SOT / 65 mw MSOP8(VSP8) 5 / 66 mw SSOP1 555 / 69 mw Operating Temperature Range T opr - to +125 C Storage Temperature Range T stg -55 to +15 C (1) Supply Voltage is the voltage difference between V + and V -. (2) Differential voltage is the voltage difference between +INPUT and -INPUT. (3) For supply voltage less than 7V, the absolute maximum rating is equal to the supply voltage. () 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 (76.2x11.3x1.6mm, 2layers, FR-) mounting -layer: EIA/JEDEC STANDARD Test board (76.2x11.3x1.6mm, layers, FR-) mounting mw Power Dissipation P D [mw] Power Dissipation vs. Temperature SSOP1 (2-Layer) MSOP8(VSP8) (2-Layer) SSOP1 (-Layer) SOT-23-5 (2-Layer) MSOP8(VSP8) (-Layer) SOT-23-5 (-Layer) Ambient Temperature [ºC] RECOMMENDED OPERATING CONDITIONS(Ta=25 C) PARAMETER Value UNIT Supply Voltage +2.2 to +5.5 (±1.1 to ±2.75) V Ver.5 [2]

3 NJU776/NJU777/NJU778 ELECTRICAL CHARACTERISTICS(V + =5V, V - =V, V COM =V + /2, Ta=25 C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT DC CHARACTERISTICS Input Offset Voltage NJU776/NJU µv V IO Ta=- C to 125 C - - µv NJU µv Ta=- C to 125 C - - µv Input Offset Voltage Drift ΔV IO/ΔT Ta=- C to 125 C (5) µv/ C Input Bias Current I B pa Input Offset Current I IO pa Open-Loop Voltage Gain Common-Mode Rejection Ratio Supply Voltage Rejection Ratio High-level Output Voltage Low-level Output Voltage Common-Mode Input Voltage Range Supply Current(All Amplifiers) A V CMR SVR V OH V OL V ICM I SUPPLY Vo=.5V to.5v, R L=1kΩ to 2.5V db Vo=.5V to.5v, R L=1kΩ to 2.5V, Ta= - C to 125 C db V ICM=V to V db V ICM=V to V, Ta= - C to 125 C db V + =2.2V to 5.5V db V + =2.2V to 5.5V, Ta= - C to 125 C db R L=1kΩ to 2.5V V R L=1kΩ to 2.5V, Ta= - C to 125 C V R L=6Ω to 2.5V V R L=6Ω to 2.5V, Ta= - C to 125 C V I SOURCE=2mA V I SOURCE =2mA, Ta= - C to 125 C V R L=1kΩ to 2.5V V R L=1kΩ to 2.5V, Ta= - C to 125 C V R L=6Ω to 2.5V V R L=6Ω to 2.5V, Ta= - C to 125 C V I SINK=2mA -..1 V I SINK=2mA, Ta= - C to 125 C V CMR 7dB - V CMR 7dB, Ta= - C to 125 C - V NJU776 No Signal, R L=OPEN ma No Signal, R L=OPEN, Ta = - C to 125 C ma NJU777 No Signal, R L=OPEN ma No Signal, R L=OPEN, Ta = - C to 125 C ma NJU778 No Signal, R L=OPEN ma AC CHARACTERISTICS Gain Bandwidth Product Phase Margin Gain Margin Equivalent Input Noise Voltage GBW Φ m G m No Signal, R L=OPEN, Ta = - C to 125 C ma G V=dB, R F=1kΩ, R L=1kΩ to 2.5V, C L=2pF, f=1khz G V=dB, R F=1kΩ, R L=1kΩ to 2.5V, C L=2pF G V=dB, R F=1kΩ, R L=1kΩ to 2.5V, C L=2pF MHz deg db e n f=1khz nv/ Hz G Slew Rate SR V=dB, R L=1kΩ to 2.5V, C L=2pF, V/µs V IN=3V PP Total Harmonic Distortion GV=2dB, RL=1kΩ to 2.5V, f=1khz, THD+N % + Noise V O=3V PP Channel Separation CS f=1khz, NJU777/NJU db (5) Guaranteed by two points of Temperature - C and +125 C Ver.5 [3]

4 NJU776/NJU777/NJU778 ELECTRICAL CHARACTERISTICS(V + =2.2V, V - =V, V COM =V + /2, Ta=25 C, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT DC CHARACTERISTICS Input Offset Voltage NJU776/NJU µv V IO Ta= - C to 125 C - - µv NJU µv Ta= - C to 125 C - - µv Input Offset Voltage Drift ΔV IO/ΔT Ta= - C to 125 C (5) µv/ C Input Bias Current I B pa Input Offset Current I IO pa Open-Loop Voltage Gain Common-Mode Rejection Ratio High-level Output Voltage Low-level Output Voltage Common-Mode Input Voltage Range Supply Current(All Amplifiers) A V CMR V OH V OL V ICM I SUPPLY Vo=.6V to 1.6V, R L=1kΩ to 1.1V db Vo=.6V to 1.6V, R L=1kΩ to 1.1V, Ta= - C to 125 C db V ICM=V to 1.2V db V ICM=V to 1.2V, Ta= - C to 125 C db R L=1kΩ to 1.1V V R L=1kΩ to 1.1V, Ta= - C to 125 C V R L=6Ω to 1.1V V R L=6Ω to 1.1V, Ta= - C to 125 C V I SOURCE=2mA V I SOURCE=2mA, Ta= - C to 125 C V R L=1kΩ to 1.1V V R L=1kΩ to 1.1V, Ta= - C to 125 C V R L=6Ω to 1.1V V R L=6Ω to 1.1V, Ta= - C to 125 C V I SINK=2mA V I SINK=2mA, Ta= - C to 125 C V CMR 7dB V CMR 7dB, Ta= - C to 125 C V NJU776 No Signal, R L=OPEN ma No Signal, R L=OPEN, Ta = - C to 125 C ma NJU777 No Signal, R L=OPEN ma No Signal, R L=OPEN, Ta = - C to 125 C ma NJU778 No Signal, R L=OPEN ma AC CHARACTERISTICS Gain Bandwidth Product Phase Margin Gain Margin Equivalent Input Noise Voltage GBW Φ m G m No Signal, R L=OPEN, Ta = - C to 125 C ma G V=dB, R F=1kΩ, R L=1kΩ to 1.1V, C L=2pF, f=1khz G V=dB, R F=1kΩ, R L=1kΩ to 1.1V, C L=2pF G V=dB, R F=1kΩ, R L=1kΩ to 1.1V, C L=2pF MHz deg db e n f=1khz nv/ Hz G Slew Rate SR V=dB, R L=1kΩ to 1.1V, C L=2pF, V/µs V IN=1V PP Total Harmonic Distortion GV=2dB, RL=1kΩ to 1.1V, f=1khz, THD+N % + Noise V O=1V PP Channel Separation CS f=1khz, NJU777/NJU db (5) Guaranteed by two points of Temperature - C and +125 C Ver.5 []

5 NJU776/NJU777/NJU778 TYPICAL CHARACTERISTICS 5 Input Offset Voltage vs. Temperature V + =5V, V - =V, V COM =V + /2 5 Input Offset Voltage vs. Temperature V + =2.2V, V - =V, V COM =V + /2 Input Offset Voltage [μv] Input Offset Voltage [μv] Ambient Temperature [ºC] Ambient Temperature [ºC] % Input Offset Voltage Distribution V + =5V, V - =V, V COM =V + /2, % Input Offset Voltage Distribution V + =2.2V, V - =V, V COM =V + /2, 35% 35% Number of Amplifiers [%] 3% 25% 2% 15% 1% Number of Amplifiers [%] 3% 25% 2% 15% 1% 5% 5% % % Input Offset Voltage [μv] Input Offset Voltage [μv] % Input Offset Voltage Drift Distribution V + =5V, V - =V, V COM =V + /2 % Input Offset Voltage Drift Distribution V + =2.2V, V - =V, V COM =V + /2 35% 35% Number of Amplifiers [%] 3% 25% 2% 15% 1% Number of Amplifiers [%] 3% 25% 2% 15% 1% 5% 5% % % Input Offset Voltage Drift [μv/ºc] Input Offset Voltage Drift [μv/ºc] Ver.5 [5]

6 NJU776/NJU777/NJU778 TYPIC AL CHARACTERISTICS.5 Input Offset Voltage vs. Supply Voltage V - =V, V COM =V + /2.5 Input Offset Voltage vs. Common-Mode Input Voltage V + =5V, V - =V.. Input Offset Voltage [mv] Ta=-ºC Input Offset Voltage [mv] Ta=-ºC Supply Voltage V + [V] Common-Mode Input Voltage [V].5 Input Offset Voltage vs. Common-Mode Input Voltage V + =2.2V, V - =V 2 Warm-Up Vio Drift V + =3.3V, V - =V, V COM =V + /2, Input Offset Voltage [mv] Ta=-ºC Input Offset Voltage Change [μv Common-Mode Input Voltage [V] Time [sec] 2 Input Bias Current vs. Temperature V - =V, V COM =V + /2 16 Open-Loop Voltage Gain vs. Temperature V - =V, R L =1kΩ Input Bias Current [pa] V + =5V V + =2.2V Open-Loop Voltage Gain [db] V + =2.2V V + =5.V Ambient Temperature [ºC] Ambient Temperature [ºC] Ver.5 [6]

7 NJU776/NJU777/NJU778 TYPICAL CHARACTERISTICS Common-Mode Rejection Ratio [db] CMR vs. Frequency V + =5V, V - =V, V IN =1Vpp, R S =1Ω, R F =1kΩ, k 1k 1k Supply Voltage Rejection Ratio [db] SVR vs. Frequency V + =5V, V - =V, V IN =1Vpp, R S =1Ω, R F =1kΩ, -SVR +SVR k 1k 1k Supply Current per Amplifier vs. Supply Voltage Gv=dB, R L =OPEN.9.9 Supply Current per Amplifier vs. Temperature Gv=dB, R L =OPEN Supply Current per Amplifier [μa] Ta=+25ºC Ta=-ºC Ta=+85ºC Supply Current per Amplifier [μa] V + =2.2V V + =5V Supply Voltage V + [V] Ambient Temperature [ºC] Output Voltage [V] Maximum Output Voltage vs. Output Current V + =5V, V - =V I SOURCE I SINK Ta=-ºC Ta=-ºC Output Current [ma] Output Voltage [V] Maximum Output Voltage vs. Output Current V + =2.2V, V - =V I SOURCE I SINK Ta=-ºC Output Current [ma] Ver.5 [7]

8 NJU776/NJU777/NJU778 TYPICAL CHARACTERISTICS 6 db Voltage Gain / Phase vs. Frequency V + =5V, V - =V, Gv=dB, R L =1kΩ, 6 db Voltage Gain / Phase vs. Frequency V + =2.2V, V - =V, Gv=dB, R L =1kΩ, Gain Gain Voltage Gain [db] 2-2 Phase -6 Phase [deg] Voltage Gain [db] 2-2 Phase -6 Phase [deg] - C L =68pF -12 C L =1pF C L =2pF k 1k 1k 1M 1M - C L =68pF -12 C L =1pF -6 C L =2pF k 1k 1k 1M 1M 6 db Voltage Gain/Phase vs. Frequency V + =5V, V - =V, Gv=dB, R L =1kΩ, C L =2pF 6 db Voltage Gain/Phase vs. Frequency V + =2.2V, V - =V, Gv=dB, R L =1kΩ, C L =2pF Gain Gain Voltage Gain [db] 2-2 Phase Ta=+125ºC -6 Phase [deg] Voltage Gain [db] 2-2 Phase Ta=+125ºC -6 Phase [deg] Ta=+25ºC Ta=-ºC k 1k 1k 1M 1M Ta=+25ºC Ta=-ºC k 1k 1k 1M 1M Voltage Gain [db] Voltage Gain vs. Frequency V + =5V, V - =V, Gv=dB, R L =1kΩ, C L =68pF C L =2pF C L =1pF -8 1k 1k 1M 1M Voltage Gain [db] Voltage Gain vs. Frequency V + =2.2V, V - =V, Gv=dB, R L =1kΩ, C L =68pF C L =2pF C L =1pF -8 1k 1k 1M 1M Ver.5 [8]

9 NJU776/NJU777/NJU778 TYPICAL CHARACTERISTICS 1 THD+N vs. Output Voltage V + =5V, V - =V, R G =1kΩ, R F =1kΩ, R L = Ω 1 THD+N vs. Output Voltage V + =2.2V, V - =V, R G =1kΩ, R F =1kΩ, R L = Ω 1 1 THD+N [%].1 f=2khz f=1khz THD+N [%].1 f=2khz f=1khz.1.1 f=2hz Output Voltage [Vrms] f=2hz Output Voltage [Vrms] Pulse Response V + =5V, V - =V, R L =1kΩ, Gv=dB, Pulse Response V + =2.2V, V - =V, R L =1kΩ, Gv=dB, Voltage [1.5V/div] INPUT C L =2pF C L =1pF C L =68pF Voltage [.5V/div] INPUT C L =2pF C L =1pF C L =68pF OUTPUT OUTPUT Time [2μs/div] Time [2μs/div] Equivalent Input Noise Voltage [nv/ Hz] Voltage Noise Density vs. Frequency V + =5V, V - =V, k 1k Equivalent Input Noise Voltage[μV] Equivalent Input Voltage Noise V DD =5V, BP=1~1Hz, Time[sec] Ver.5 [9]

10 NJU776/NJU777/NJU778 TYPICAL CHARACTERISTICS Channel Separation [db] Channel Separation vs. Frequency V O =1Vpp, R S =1Ω, R F =1kΩ, V + =2.2V V + =5V k 1k 1k Ver.5 [1]

11 NJU776/NJU777/NJU778 PACKAGE DIMENSIONS 2.9±.2 ~ ± ±.2.6.2MIN ±.1.6MAX ±.1.1.1MAX 1.1±.1 Unit: mm SOT-23-5 Package ±.2.±.3.55±.2.6MAX ±.1 Unit: mm.2± M MSOP8(VSP8)* Package *MEET JEDEC MO-187-DA Ver.5 [11]

12 NJU776/NJU777/NJU778 PACKAGE DIMENSIONS ~ 1º 1 8.±.2 6.± ±.1.5± MAX Unit: mm.1.1±.1.22±.1.1 M SSOP1 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. Ver.5 [12]