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| NJM2729 Precision Operational Amplifier GENERAL DESCRIPTION Precision VIO=60V max. VIO=100V max. (Ta=-40C to +85C) Low Offset Drift VIO/T=0.9V/C max. (Ta=-40 to +85C) Specified for 15V and 5V operation CMR 130dB min. Low Noise VNI=80nVrms typ. at f=1 to 100Hz en=8nV/Hz typ. at f=100Hz Av=130dB min. Open Loop Gain Guaranteed Temperature Ta=-40C to +85C Unity Gain Stable Operating Voltage Vopr=3V to 18V Unity Gain Frequency fT=1.1MHz typ. Supply Current Icc=2mA max. Package EMP8 PACKAGE OUTLINE NJM2729E FEATURES The NJM2729 is a high performance operational amplifier featured very low offset voltage and drift. Features are low offset voltage and drift, hi common mode rejection, low noise and open loop gain. DC characteristics are100% tested and specified from -40 to 85C. The NJM2729 is suitable for high gain circuit amplified small signal and sets required stable behavior over a wide temperature range. APPRICATION Thermocouple sensor Bridge Amplifier Current Sensor Instrumentation Amplifier Reference Voltage Circuit PIN CONFIGURATION PACKAGE DESCRIPTION 5.00.3 8 5 (Top View) BALANCE -INPUT +INPUT V- 1 2 3 4 8 7 6 5 BALANCE 3.90.2 6.00.4 V + OUTPUT NC 1 1.27 0.74MAX 4 E1 -1- NJM2729 ABSOLUTE MAXIMUM RATING (Ta=25C Unless Otherwise Specified) PARAMETER Supply Voltage Common Mode Input Voltage (Note1) Differential Input Voltage Power Dissipation (Note 2) Operating Temperature Storage Temperature SYMBOL V /V + - RATING 20 20 30 640 -40 to +85 -50 to +125 UNIT V V V mW C C VICM VID PD Topr Tstg (Note1) For supply voltage less than 20V, the maximum input voltage is equal to the supply voltage. (Note2) Mounted on the EIA/JEDEC standard board (76.2x114.3x1.6mm, two layer, FR-4). RECOMMENDED OPERATING VOLTAGE PARAMETER Supply Voltage SYMBOL V /V + - RATING MIN. 3 TYP. - MAX. 18 UNIT V ELECTRONIC CHARACTERISTICS (V+/V-=15V Ta=+25C, VICM=0V unless otherwise specified) DC CHARACTERISTICS PARAMETER Input Characteristics Input Offset Voltage Input Offset Voltage Drift Common Mode Input Voltage Range Common Mode Rejection Ratio SYMBOL VIO1 VIO2 Vio/T VICM1 VICM2 CMR1 CMR2 Supply Voltage Rejection Ratio Input Bias Current Input Bias Current Drift Input Offset Current Input Offset Current Drift Differential Input Impedance Common-Mode Input Impedance Input Offset Voltage Trim Voltage Gain SVR1 SVR2 IB1 IB2 IB/T IIO1 IIO2 IIO/T RID RIC Viotri Av1 Av2 Ta=-40 to +85C Ta=-40+85C Theoretical value by design. Theoretical value by design. Rp=20k RL=2k, Vo= -10V0V / 0V+10V / -10V+10V Ta=-40 to +85C, RL=2k, Vo= -10V0V / 0V+10V / -10V+10V Ta=-40 to +85C Ta=-40+85C Ta=-40 to +85C VCM=0V-13V / VCM=0V+13V Ta=-40 to +85C, VCM=0V-13V / VCM=0V+13V V /V =3V to 18V Ta=-40 to +85C,V /V =3V to 18V + + - RATING MIN. - TYP. 20 20 0.3 14 13.5 140 140 125 120 1.2 1.7 8 0.3 0.3 1.5 90 800 3 142 136 MAX. 60 100 0.9 2.8 6 60 2.8 4.5 72 - UNIT V V V/C V V dB dB dB dB nA nA pA/C nA nA pA/C M G mV dB dB Ta=-40 to +85C Ta=-40+25C / Ta=+25C+85C 13 13 130 120 115 110 -0.2 -1.5 130 126 -2- E1 NJM2729 DC CHARACTERISTICS PARAMETER Output Characteristics Maximum Output Voltage VOM1 VOM2 VOM3 VOM4 VOM5 Output Impedance Supply Characteristics Supply Current RO ICC1 ICC2 ICC3 Power Dissipation PD1 PD1 RL=10k Ta=-40 to +85C, RL=10k RL=2k Ta=-40 to +85C, RL=2k RL=1k Open-Loop AV=+1, RL= Ta=-40 to +85C, AV=+1, RL= V /V =3V, AV=+1, RL= AV=+1, RL= V /V =3V, AV=+1, RL= + + - SYMBOL RATING MIN. 13.5 13.0 12.5 12.0 12.0 - TYP. 14.0 14.0 13.0 13.0 12.5 60 1.6 1.7 0.58 50 4.2 MAX. 2 2.5 0.75 60 5.4 UNIT V V V V V mA mA mA mW mW AC CHARACTERISTICS PARAMETER Frequency Characteristics Unity Gain Frequency Slew Rate Noise Characteristics Equivalent Input Noise Voltage Equivalent Input Noise Current VNI INI fo=1Hz to 100Hz fo=1Hz to 100Hz 80 3 nVrms pArms fT +SR -SR AV=+100, RL=2k, CL=10pF RISE, AV=+1, VIN=1Vpp, RL=2k, CL=10pF FALL, AV=+1, VIN=1Vpp, RL=2k, CL=10pF 0.1 0.1 1.1 0.3 0.3 MHz V/s V/s SYMBOL RATING MIN. TYP. MAX. UNIT E1 -3- NJM2729 ELECTRONIC CHARACTERISTICS (V+/V-=5V Ta=+25C, VICM=0V unless otherwise specified) PARAMETER Input Characteristics Input Offset Voltage Common Mode Input Voltage Range Common Mode Rejection Ratio VIO1 VIO2 VICM1 VICM2 CMR1 CMR2 Input Bias Current Input Offset Current IB1 IB2 IIO1 IIO2 Voltage Gain Av1 Av2 Output Characteristics Maximum Output Voltage VOM1 VOM2 VOM3 VOM4 Supply Characteristics Supply Current ICC1 ICC2 AV=+1, RL= Ta=-40 to +85C, AV=+1, RL= 0.85 0.9 1.1 1.25 mA mA RL=10k Ta=-40 to +85C, RL=10k RL=2k Ta=-40 to +85C, RL=2k 3.5 3.5 3.5 3.5 4.0 4.0 4.0 4.0 V V V V Ta=-40 to +85C Open-Loop, RL=2k, Vo= -3V0V / 0V+3V / -3V+3V Ta=-40 to +85C, Open-Loop, RL=2k, Vo= -3V0V / 0V+3V / -3V+3V Ta=-40 to +85C Ta=-40 to +85C VCM=0V-3V / VCM=0V+3V Ta=-40 to +85C, VCM=0V-3V / VCM=0V+3V Ta=-40 to +85C 3 3 115 105 -0.2 -0.2 115 110 30 35 3.9 3.5 130 125 0.7 1 0.3 0.3 130 125 70 110 2 6 2.8 4.5 V V V V dB dB nA nA nA nA dB dB SYMBOL RATING MIN. TYP. MAX. UNIT -4- E1 NJM2729 EXPLANATION OF MEASUREMENT CONDITION PARAMETER Input Offset Voltage Drift Input Offset Voltage Drift = VIO / t t : Amount of Temperature change. VIO : Amount of Input Offset Voltage. Common Mode Input Voltage range A range of input voltage at which the operational amplifier can function. Common Mode Rejection Ratio CMR = 20log | ( VIN / VIO )| VIN : Amount of Input Voltage. VIO : Amount of Input Offset Voltage. Supply Voltage Rejection Ratio SVR = 20log |( VS / VIO )| VS : Amount of supply Voltage. VIO : Amount of Input Offset Voltage. Common Mode Input Impedance RINCM = VIN / IB VIN : Amount of Input Voltage. IB : Amount of Input bias current. Voltage Gain AV = 20log |( VIN / VO )| VO : Amount of output Voltage. VIN : Amount of Input Voltage. Explanation E1 -5- NJM2729 TYPICAL CHARACTERISTICS Input Offset Voltage Distribution 50 V /V =15V,Ta=25 + - Input Offset Voltage Distribution 50 V+/V -=5V,Ta=25 40 Number Of Amplifiers Number Of Amplifiers 40 30 30 20 20 10 10 0 -70-60-50-40-30-20-10 0 10 20 30 40 50 60 70 Input Offset Voltage [V] 0 -70-60-50-40-30-20-10 0 10 20 30 40 50 60 70 Input Offset Voltage [V] Input Offset Voltage Drift Distribution 30 25 Number Of Amplifiers 20 15 10 5 0 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 Input Offset Voltage Drift [V/] Number Of Amplifiers V /V =15V,Ta=-40 to 25 + - Input Offset Voltage Drift Distribution 40 35 30 25 20 15 10 5 1 0 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 V+/V-=15V,Ta=25 to 85 Input Offset Voltage Drift [V/] Input Offset Voltage Drift Distribution 40 35 Number Of Amplifiers Number Of Amplifiers V /V =5V,Ta=-40 to 25 + - Input Offset Volotage Drift Distribution 40 35 30 25 20 15 10 5 V /V =5V,Ta=25 to 85 + - 30 25 20 15 10 5 0 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0 Input Offset Voltage Drift [V/] -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 Input Offset Voltage Drift [V/] -6- E1 NJM2729 TYPICAL CHARACTERISTICS Input Offset Voltage vs. Temperature 100 80 Input Offset Voltage [V] Input Offset Voltage [V] 60 40 20 0 -20 -40 -60 -80 -100 -50 -25 0 25 50 75 Ambient Temperature [C] 100 V+/V-=15V, VCM=0V Input Offset Voltage vs. Temperature 100 80 60 40 20 0 -20 -40 -60 -80 -100 -50 -25 0 25 50 75 Ambient Temperature [C] 100 V+/V-=5V, VCM=0V Input Offset Voltage vs. Temperature 100 (Supply Voltage) VCM =0V Input Offset Voltage vs. Temperature 100 (Supply Voltage) VCM =0V Sample2 (5V) Input Offset Voltage [V] 0 Sample1 (15V) -50 Sample2 (15V) Sample3 (15V) Input Offset Voltge [V] 50 Sample3 (5V) Sample1 (5V) 50 V+/V -=3V V+/V -=5V 0 V+/V -=15V V+/V -=18V -50 -100 -50 -25 0 25 50 75 100 125 -100 -50 -25 0 25 50 75 100 125 Ambient Temperature [] Ambient Temperature [] Input Offset Voltage vs. Supply Voltage 50 40 CM=0V VCM =0V Input Bias Curent vs. Supply Voltage 4 CM=0V VCM=0V Input Offset Voltge [V] 3 Sample1 Sample2 30 20 10 0 -10 Input Bias Current [nA] 2 Sample2 Sample1 1 Sample3 0 Sample3 0 4 8 12 16 20 24 -1 Supply Voltage [V] 0 4 8 12 16 20 24 Supply Voltage [V] E1 -7- NJM2729 TYPICAL CHARACTERISTICS Variation in Input Offset Voltage vs. Common Mode Input Voltage 8 Input Offset Voltage vs. Common Mode Input Voltage 60 50 (Supply Voltage) Ta=25 Variation in Input Offset Voltage [V] 6 Input Offset Voltage [V] 4 2 0 -2 -4 -6 -8 -15 -10 -5 0 5 10 15 40 30 20 10 0 -10 -20 -15 Sample2 (15V) Sample1 (15V) Sample1 (5V) Sample2 (5V) Sample3 (5V) Sample3 (15V) 5 10 15 -10 -5 0 Common Mode Input Voltage [V] Common Mode Input Voltage [V] Input Offset Voltage vs. Common Mode Input Voltage 60 50 (Supply Voltage) Ta=25 Input Offset Voltage vs. Common Mode Input Voltage (Temperature) V /V =15V + - 60 50 Input Offset Voltage [V] 40 30 20 10 0 -10 -20 -20 -15 -10 -5 V+/V-=15V V+/V-=3V V+/V-=5V Input offset Voltage [V] 40 30 20 10 0 -10 Ta=-40 Ta=25 Ta=85 V+/V-=18V Common Mode Input Voltage [V] 0 5 10 15 20 -20 -15 -10 Common Mode Input Voltage [V] -5 0 5 10 15 Input Offset Voltage vs. Supply Voltage 50 (Temperature) Vcm=0V 4 Warm Up Input Offset Voltage Drift V /V =15V, Gv=100dB, Ta=25 + - Input Offset Voltage Change [V] Input offset Voltage [V] 40 3 30 Ta=25 Ta=85 2 20 1 10 0 Ta=-40 0 0 4 8 12 16 20 24 -1 0 50 100 150 200 Supply Voltage [V] Time From Power Supply Turn On [sec] -8- E1 NJM2729 TYPICAL CHARACTERISTICS Input Offset Voltage vs. Output Voltage -12.5 -13 -13.5 -14 -14.5 -15 -15.5 -16 -16.5 -15 -10 -5 0 5 10 15 V /V =15V, Gv=100dB, R L=2k, Ta=25 + - Input Offset Voltage vs. Trim Resistance 4 3 V+/V-=15V, Gv=60dB, Ta=25 Input Offset Voltage [mV] Input Offset Voltage [uV] 2 1 0 -1 -2 -3 -4 0 5 10 15 20 Output Voltage [V] Trim resistance Rp [k] Equivalent Input Noise Voltage V+/V -=15V, BP=1~100Hz 0.8 Equivalent Input Noise Voltage 0.8 V /V =5V, BP=1~100Hz + - Equivalent Input Noise Voltagte [V] Equivalent Input Noise Voltage [V] 0 2 4 6 8 10 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 0 2 4 6 8 10 Time [sec] Time [sec] 16 Rf=10k, Rs=100, Rg=100, Ta=25 Equivalent Input Noise Voltage Equivalent Input Noise Voltage [nV/Hz] 14 12 10 8 6 4 2 0 V+/V-=15V V+/V-=5V 1 10 Frequency [Hz] 100 1000 E1 -9- NJM2729 TYPICAL CHARACTERISTICS Input Bias Current vs. Temperature 10 (Supply Voltage) CM=0V VCM =0V Input Bias Current vs. Temperature 10 (Supply Voltage) CM=0V VCM=0V 8 Input Bias Current [nA] Input Bias Current [nA] 6 Sample1 (15V) Sample2 (15V) Sample3 (15V) Sample1 (5V) Sample2 (5V) Sample3 (5V) 8 V+/V-=18V 6 V /V =15V V+/V -=5V 4 V+/V-=3V + - 4 2 2 0 -50 -25 0 25 50 75 100 125 0 -50 -25 0 25 50 75 100 125 Ambient Temperature [] Ambient Temperature [] Input Bias Current vs. Common Mode Input Voltage (Temperature) V+/V -=15V 3 2.5 Input Bias Current vs. Common Mode Input Voltage 3 2.5 (Supply Voltage) Ta=25 Ta=-40 Input Bias Current [nA] Input Bias Current [nA] 2 1.5 1 0.5 0 -0.5 -1 -15 -10 -5 0 5 10 15 Ta=85 Ta=25 2 1.5 1 0.5 0 -0.5 -1 -20 -15 -10 -5 V+/V-=15V V+/V -=18V V+/V-=3V V+/V-=5V 0 5 10 15 20 Common Mode Input Voltage [V] Common Mode Input Voltage [V] Input Offset Current vs. Temperature 5 (Supply Voltage) CM=0V VCM =0V Input Offset Current vs. Temperature 6 5 (Supply Voltage) VCM =0V Input Offset Current [nA] 4 Input Offset Current [nA] 3 Sample1 (15V) Sample2 (15V) Sample3 (15V) Sample1 (5V) Sample2 (5V) Sample3 (5V) 4 3 2 1 0 + - V+/V-=18V V /V =15V V+/V-=5V V+/V-=3V 2 1 0 -50 -25 Ambient Temperature [] 0 25 50 75 100 125 -1 -50 -25 0 25 50 75 100 125 Ambient Temperature [] - 10 - E1 NJM2729 TYPICAL CHARACTERISTICS Input Offset Current vs. Common Mode Input Voltage (Temperature) V+/V-=15V 2 1.5 Input Offset Current vs. Common Mode Input Voltage 2 1.5 (Supply Voltage) Ta=25 Input Offset Current [nA] 1 0.5 0 -0.5 -1 -1.5 -2 -15 -10 -5 Ta=-40 Input Offset Current [nA] Ta=25 Ta=85 1 0.5 0 -0.5 -1 -1.5 V+ /V-=18V V+/V -=5V V+/V-=15V V+/V-=3V 0 5 10 15 -2 -20 -15 -10 -5 0 5 10 15 20 Common Mode Input Voltage [V] Common Mode Input Voltage [V] Common Mode Rejection Ratio vs. Temperature (Supply Voltage) 200 VICM =V +2V to V+-2V Common Mode Rejection Ratio vs. Frequency 140 V+/V -=15V, Gv=80dB, Ta=25 Common Mode Rejection Ratio [dB] V+/V -=15V 150 V+/V-=18V V+/V -=5V Common Mode Rejection Ratio [dB] 120 100 100 V /V =3V + - 80 50 60 0 -50 -25 0 25 50 75 100 125 40 2 10 10 3 10 4 10 5 Ambient Temperature [] Frequency [Hz] Supply Voltage Rejection Ratio vs. Frequency 140 V /V =14.5 to 15.5V, Gv=80dB, Ta=25 + - Supply Voltage Rejection Ratio vs. Temperature 200 V+/V-=18V to 3V Supply Voltage Rejection Ratio [dB] 120 100 80 60 40 20 0 10 +SVR Supply Voltage Rejection Ratio [dB] 150 -SVR 100 50 10 1 10 2 10 3 10 4 0 -50 -25 0 25 50 75 100 125 Frequency [Hz] Temperature [] E1 - 11 - NJM2729 TYPICAL CHARACTERISTICS Voltage Gain vs. Temperature 200 (Supply Voltage) RL=2k + - Voltage Gain vs. Supply Voltage 160 150 Ta=-40 140 130 120 110 (Temperature) RL=2k V+/V -=15V 150 V /V =18V Ta=25 Ta=85 Voltage Gain [dB] 100 V+/V -=5V V+/V-=3V 50 0 -50 Voltage Gain [dB] 125 -25 0 25 50 75 100 100 Ambient Temperature [] 0 4 8 12 16 20 24 Supply Voltage [V] Maximum Output Voltage vs. Load Resistance (Temperature) V+/V-=15V 15 10 Ta=-40 5 0 Ta=85 -5 -10 -15 1 10 Ta=25 Ta=-40 Ta=25 Ta=85 20 15 Maximum Output Voltage vs. Load Resistance (Supply Voltage) Ta=25 Maximum Output Voltage [V] Maximum output Voltage [V] V+/V-=18V V+/V-=15V V /V =5V V+/V-=3V + - 10 5 0 -5 -10 -15 -20 1 10 V+/V-=3V V+/V-=5V V+/V -=15V V+/V-=18V 10 2 10 2 10 3 10 4 10 5 10 3 10 4 10 5 Load Resistance [] Load Resistance [] Output Voltage vs. Output Current 15 10 V+/V-=15V 20 15 Maximum output Voltage vs. Temperature (Supply Voltage) RL=2k +VOM +V OM Ta=-40 +VOM +V OM Ta=25 +VOM +V OM Ta=85 Maximum output Voltage [V] 10 5 0 -5 -10 -15 -20 -50 Output Current [V] 5 0 V+/V-=5V V+/V-=18V V+/V-=3V V+/V-=15V -VOM -V OM Ta=-40 -5 -10 -15 -VOM -V OM Ta=25 -VOM Ta=85 -VOM V+/V-=5V V+/V-=3V V+/V-=18V V+/V-=15V 0 5 10 15 20 25 30 35 40 -25 0 25 50 75 100 125 Output Current [mA] Ambient Temperature [] - 12 - E1 NJM2729 TYPICAL CHARACTERISTICS THD+N vs. Output Voltage 10 V /V =15V, Gv=20dB, R F=10k, Rs=1k, Ta=25 + - THD+N vs. Frequency 1 V+/V -=15V, Gv=20dB, R F=10k, Rs=1k, Vout=100mVrms, Ta=25 1 0.8 f=20kHz THD+N [%] THD+N [%] 0.1 f=1kHz 0.01 0.6 0.4 0.001 f=100Hz f=20Hz 0.0001 0.01 0.1 1 10 0.2 0 10 100 1000 10 4 10 5 10 6 Output Voltage [Vrms] Frequency [Hz] 40dB Gain/Phase vs. Frequency (Supply Voltage) 80 60 Gv=40dB, R F=10k, Rs=100, RT=50, Ta=25 180 120 60 0 -60 -120 V+/V-=3V 5 40dB Gain/Phase vs. Frequency (Temperature) 80 60 V+/V -=15V, Gv=40dB, R F=10k, Rs=100, R T=50 180 120 60 0 -60 Ta=-40 Ta=25 Ta=85 10 3 Voltage Gain [dB] 40 20 0 V+/V-=5V V /V =3V + - Voltage Gain [dB] Gain Phase V+/V -=18V V+/V-=15V 40 20 0 -20 Gain Phase Ta=-40 Ta=25 Ta=85 Phase [deg] Phase [deg] Phase [deg] Phase [deg] Phase [deg] V /V =18V V+/V-=15V V+/V-=5V 10 3 + - -20 -40 2 10 -120 -180 10 4 10 10 6 10 7 -180 -40 2 10 Frequency [Hz] Frequency [Hz] 10 4 10 5 10 6 10 7 40dB Gain/Phase vs. Frequency (Load Capacitance) 80 60 V+/V-=15V, Gv=40dB, R F=10k, Rs=100, R T=50, Ta=25 CL=0.2F Gain Phase CL =0.1F CL=0.047F CL =0.01F CL=0F 0 -60 60 180 120 40dB Gain/Phase vs. Frequency (Temperature) V+/V-=5V, Gv=40dB, R F=10k, Rs=100, R T=50 80 60 180 120 60 0 -60 Voltage Gain [dB] 40 20 0 -20 -40 Voltage Gain [dB] 40 20 0 -20 gain Ta=-40 Ta=25 Ta=85 Phase [deg] Phase [deg] Phase [deg] Phase [deg] Phase [deg] Phase CL=0.2F CL=0.1F CL=0.047F CL=0.01F CL=0F 10 2 -120 -180 10 7 Ta=-40 Ta=25 Ta=85 10 3 -120 -180 10 3 Frequency [Hz] 10 4 10 5 10 6 -40 2 10 Frequency [Hz] 10 4 10 5 10 6 10 7 E1 - 13 - NJM2729 TYPICAL CHARACTERISTICS V.F. Peak (Supply Voltage) Gv=0dB, R T=50, C L=0.1F, Ta=25 V.F.Peak (Temperature) 20 15 V /V =15V, Gv=0dB, R T=50, C L=0.1F + - 20 15 V+/V -=18V Voltage Gain [dB] Voltage Gain [dB] 10 + - V+/V -=5V V /V =3V V+/V-=15V Ta=85 Ta=-40 Ta=25 10 5 0 -5 5 0 -5 -10 3 10 10 4 10 5 10 6 Frequency [Hz] -10 3 10 10 4 10 5 10 6 Frequency [Hz] V.F.Peak (Load Capacitance) 20 15 V /V =15V, Gv=0dB, R T=50, Ta=25 CL=0.2F CL=0.1F CL=0.047F CL=0.01F CL=0F 0 -5 -10 3 10 + - Voltage Gain [dB] 10 5 104 Frequency [Hz] 105 106 Pulse Response (Temperature) 2 1.6 1.2 V /V =15V, R L=2k, C L=5pF + - Pulse Response (Temperature) 0.8 0.4 0 2 Input 1.6 1.2 0.4 0 V+/V -=15V, R L=2k, C L=5pF 0.8 Output [V] Output [V] Input [V] Input [V] 0.8 0.4 0 Input Ta=85 Ta=25 Ta=-40 -0.4 -0.8 -1.2 0.8 Output 0.4 0 -0.4 -0.8 Ta=-40 Ta=25 Ta=85 -0.4 -0.8 -1.2 -1.6 -2 -0.4 -0.8 Output -1.6 -2 -2 -1 0 1 Time [s] 2 3 4 5 6 -2 -1 0 1 Time [s] 2 3 4 5 6 - 14 - E1 NJM2729 TYPICAL CHARACTERISTICS Pulse Response (Temperature) 2 1.6 1.2 V+/V -=5V, R L=2k, C L=5pF 0.8 0.4 0 Pulse Response (Temperature) 2 Input 1.6 1.2 0.4 0 V+/V-=5V, R L=2k, C L=5pF 0.8 Output [V] Output [V] Input [V] Input [V] 0.8 0.4 0 -0.4 -0.8 Input Ta=85 Ta=25 -0.4 -0.8 -1.2 0.8 Output 0.4 0 -0.4 -0.8 Ta=-40 Ta=25 Ta=85 -0.4 -0.8 -1.2 -1.6 -2 Output Ta=-40 -1.6 -2 -2 -1 0 1 Time [s] 2 3 4 5 6 -2 -1 0 1 Time [s] 2 3 4 5 6 2 1.6 1.2 (Supply Voltage, Load Capacitance) RL=2k, Ta=25 Pulse Response 0.8 0.4 0 2 Input 1.6 1.2 (Supply Voltage, Load Capacitance) RL=2k, Ta=25 Pulse Response 0.8 0.4 0 Output [V] 0.8 0.4 0 -0.4 -0.8 Input Output [V] V /V =15V CL=100pF V+/V-=15V CL=1500pF V+/V-=5V CL=100pF + - Input [V] Input [V] Input [V] Input [V] Input [V] Input [V] Input [V] Input [V] -0.4 -0.8 -1.2 -1.6 -2 0.8 Output 0.4 0 -0.4 -0.8 V+/V -=15V CL=1500pF V+/V -=15V CL=100pF -5 0 V+/V -=5V CL=1500pF V /V =5V CL=100pF + - -0.4 -0.8 -1.2 -1.6 -2 Output V+/V-=5V CL=1500pF 0 -5 Time [s] 5 10 Time [s] 5 10 Pulse Response (Load Capacitance) 2 1.6 1.2 V /V =15V, R L=2k, Ta=25 + - Pulse Response (Load Capacitance) 0.8 0.4 0 2 Input 1.6 1.2 V+/V -=15V, R L=2k, Ta=25 0.8 0.4 0 Output [V] 0.8 0.4 0 Input Output [V] CL=0.01F CL=0.047F CL=0.1F CL=0.2F Input [V] Input [V] Input [V] Input [V] Input [V] Input [V] Input [V] Input [V] -0.4 -0.8 -1.2 0.8 0.4 0 -0.4 -0.8 -20 Output CL=0.2F CL=0.1F CL=0.047F -0.4 -0.8 -1.2 -1.6 -2 Output -0.4 -0.8 -20 -1.6 -2 CL=0.01F -10 0 10 -10 0 10 Time [s] 20 30 40 50 60 Time [s] 20 30 40 50 60 E1 - 15 - NJM2729 TYPICAL CHARACTERISTICS Slew Rate vs. Temperature 1 RL=2k 2 Unity Gain Frequency vs. Temperature Gv=40dB, R F=10k, Rs=100, R T=50 0.8 Unity Gain Frequency [MHz] 1.5 V /V =15V 1 + - Slew Rate [V/s] 0.6 V+/V -=15V FALL V+/V -=15V RISE 0.4 0.5 V+/V -=5V 0.2 V+/V-=5V FALL -25 0 25 V /V =5V RISE 50 75 100 125 + - 0 -50 0 -50 -25 0 25 50 75 100 125 Ambient Temperature [] Temperature [] Supply Current vs. Supply Voltage (Temperature) 2.4 2 RL= Supply Current vs. Temperature 2.4 2 (Supply Voltage) RL= Ta=25 V+/V-=18V Supply Current [mA] 1.6 Ta=85 1.2 0.8 0.4 0 Ta=-40 Supply Current [mA] 1.6 1.2 0.8 0.4 0 -50 V+/V-=3V V+ /V -=15V V+/V-=5V 0 4 8 12 16 20 24 -25 0 25 50 75 100 125 Supply Voltage [V] Ambient Temperature [] - 16 - E1 NJM2729 Application Information Power Supply Bypassing The NJM2729 is a high precision operational amplifier featuring low offset voltage, high voltage gain, high CMR, high SVR and so on. To maximize such a high performance with stable operation, the NJM2729 should be operated by clean and low impedance supply voltage. So, the bypass capacitor should be connected to the NJM2729's both power supply terminals (V+ and V-) as shown in Fig.1. The bypass capacitors should be placed as close as possible to IC package V+ 2 - + 7 NJM2729 3 4 6 V- Fig.1 Power Supply Bypassing Circuit Thermoelectric Effect The NJM2729 is a high precision operational amplifier featuring low offset voltage and low offset voltage thermal drift. To achieve such a high performance, take care about thermoelectric effect possibly occurs on each input terminal of the NJM2729. Generally, if there are thermal mismatches at the junction of different types of metals, the thermoelectric voltage (Seebeck effect) occurs at the junction. The thermoelectric voltages possibly occur at the junction of PCB metal patterns and NJM2729's each input terminal metal. If there is thermal mismatch in-between NJM2729's each input terminal metal, the thermoelectric voltages generated on each input terminal possibly have different voltage each. This voltage difference causes offset voltage and offset voltage thermal drift of the NJM2729. To minimize this voltage difference, the thermal mismatch in-between NJM2729's each input terminal and PCB metal should be minimized. Offset Voltage Adjustment The NJM2729 has offset voltage trim terminals (pin1 and pin8) as shown in below Fig.2. By connecting external potentiometer in the range of 20Kohm, the offset voltage trim range is 3mV. This offset voltage trim is effective only for offset voltage at room temperature, not for offset voltage thermal drift. If offset voltage adjustment is not in use, leave pin1 and pin8 open (un-connected). Rp=20k 1 2 V+ - + 8 7 6 NJM2729 3 4 V- Fig.2 Offset Voltage Trim Circuit E1 - 17 - NJM2729 Differential Amplifier Differential amplifier (see below Fig.3) is used in high accuracy circuit to improve common mode rejection ratio (CMR). A matching between the ratio R1/R2 = R3/R4 and R1=R3 makes the high CMR. For example, acceptable error range to obtain CMR of 130dB or more is about 0.1ppm. R2 V+ R1 2 - + 7 R3 3 NJM2729 4 6 R4 V- Fig.3 Differential Amplifier [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. - 18 - E1 |
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