NJM2729 Precision Operational Amplifier ■ GENERAL DESCRIPTION ●Precision VIO=60µV max. ■ PACKAGE OUTLINE VIO=100µV max. (Ta=-40ºC to +85ºC) ●Low Offset Drift ∆VIO/∆T=0.9µV/ºC max. (Ta=-40 to +85ºC) ●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=-40ºC to +85ºC ●Unity Gain Stable ●Operating Voltage Vopr=±3V to ±18V ●Unity Gain Frequency fT=1.1MHz typ. ●Supply Current Icc=2mA max. ●Package EMP8 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 85ºC. 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 5.0±0.3 5 8 (Top View) BALANCE 1 8 BALANCE −INPUT 2 7 V +INPUT 3 6 OUTPUT V− 4 5 NC 6.0±0.4 3.9±0.2 + 4 1 1.27 0.74MAX E1 -1- NJM2729 ■ ABSOLUTE MAXIMUM RATING (Ta=25ºC Unless Otherwise Specified) PARAMETER SYMBOL RATING UNIT Supply Voltage - V /V ±20 V Common Mode Input Voltage (Note1) VICM ±20 V Differential Input Voltage VID ±30 V Power Dissipation (Note 2) PD 640 mW Operating Temperature Topr -40 to +85 ºC Storage Temperature Tstg -50 to +125 ºC + (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 (76.2×114.3×1.6mm, two layer, FR-4). ■ RECOMMENDED OPERATING VOLTAGE PARAMETER SYMBOL Supply Voltage + RATING - V /V MIN. TYP. MAX. UNIT ±3 - ±18 V ■ ELECTRONIC CHARACTERISTICS (V+/V-=±15V Ta=+25ºC, VICM=0V unless otherwise specified) ● DC CHARACTERISTICS PARAMETER Input Characteristics Input Offset Voltage SYMBOL VIO1 VIO2 Input Offset Voltage Drift ∆Vio/T Common Mode Input Voltage Range VICM1 Common Mode Rejection Ratio 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 RATING Ta=-40 to +85ºC Ta=-40→+25ºC / Ta=+25ºC→+85ºC MIN. TYP. MAX. UNIT - 20 60 µV - 20 0.3 100 0.9 µV µV/ºC ±13 ±14 - V VICM2 Ta=-40 to +85ºC ±13 ±13.5 - V CMR1 VCM=0V→-13V / VCM=0V→+13V 130 140 - dB CMR2 Ta=-40 to +85ºC, VCM=0V→-13V / VCM=0V→+13V 120 140 - dB + - SVR1 V /V =±3V to ±18V 115 125 - dB SVR2 Ta=-40 to +85ºC,V /V =±3V to ±18V 110 120 - dB -0.2 1.2 2.8 nA IB2 Ta=-40 to +85ºC -1.5 1.7 6 nA ∆IB/T Ta=-40→+85ºC - 8 60 pA/ºC - 0.3 2.8 nA IIO2 Ta=-40 to +85ºC - 0.3 4.5 nA ∆IIO/T + - IB1 IIO1 Ta=-40→+85ºC - 1.5 72 pA/ºC RID Theoretical value by design. - 90 - MΩ RIC Theoretical value by design. Rp=20kΩ - 800 ±3 - GΩ mV Input Offset Voltage Trim Viotri Voltage Gain Av1 RL=2kΩ, Vo= -10V→0V / 0V→+10V / -10V→+10V 130 142 - dB Av2 Ta=-40 to +85ºC, RL=2kΩ, Vo= -10V→0V / 0V→+10V / -10V→+10V 126 136 - dB -2- E1 NJM2729 ● DC CHARACTERISTICS PARAMETER SYMBOL RATING MIN. TYP. MAX. UNIT Output Characteristics Maximum Output Voltage VOM1 RL=10kΩ ±13.5 ±14.0 - V VOM2 Ta=-40 to +85ºC, RL=10kΩ ±13.0 ±14.0 - V VOM3 RL=2kΩ ±12.5 ±13.0 - V VOM4 Ta=-40 to +85ºC, RL=2kΩ ±12.0 ±13.0 - V VOM5 RL=1kΩ ±12.0 ±12.5 - V - 60 - Ω Output Impedance Supply Characteristics RO Open-Loop Supply Current ICC1 AV=+1, RL=∞ - 1.6 2 mA ICC2 Ta=-40 to +85ºC, AV=+1, RL=∞ - 1.7 2.5 mA Power Dissipation + - ICC3 V /V =±3V, AV=+1, RL=∞ - 0.58 0.75 mA PD1 AV=+1, RL=∞ - 50 60 mW - 4.2 5.4 mW MIN. TYP. MAX. UNIT - 1.1 - MHz PD1 + - V /V =±3V, AV=+1, RL=∞ ● AC CHARACTERISTICS PARAMETER SYMBOL RATING Frequency Characteristics Unity Gain Frequency Slew Rate fT AV=+100, RL=2kΩ, CL=10pF +SR RISE, AV=+1, VIN=1Vpp, RL=2kΩ, CL=10pF 0.1 0.3 - V/µs -SR FALL, AV=+1, VIN=1Vpp, RL=2kΩ, CL=10pF 0.1 0.3 - V/µs Equivalent Input Noise Voltage VNI fo=1Hz to 100Hz - 80 - nVrms Equivalent Input Noise Current INI fo=1Hz to 100Hz - 3 - pArms Noise Characteristics E1 -3- NJM2729 ■ ELECTRONIC CHARACTERISTICS (V+/V-=±5V Ta=+25ºC, VICM=0V unless otherwise specified) PARAMETER SYMBOL RATING MIN. TYP. MAX. UNIT Input Characteristics Input Offset Voltage VIO1 VIO2 Ta=-40 to +85ºC - 30 70 µV - 35 110 µV ±3 ±3.9 - V Common Mode Input Voltage Range VICM1 VICM2 Ta=-40 to +85ºC ±3 ±3.5 - V Common Mode Rejection Ratio CMR1 VCM=0V→-3V / VCM=0V→+3V 115 130 - dB CMR2 Ta=-40 to +85ºC, VCM=0V→-3V / VCM=0V→+3V 105 125 - dB -0.2 0.7 2 nA Input Bias Current IB1 Input Offset Current IIO1 IB2 Voltage Gain Ta=-40 to +85ºC -0.2 1 6 nA - 0.3 2.8 nA - 0.3 4.5 nA IIO2 Ta=-40 to +85ºC Av1 Open-Loop, RL=2kΩ, Vo= -3V→0V / 0V→+3V / -3V→+3V 115 130 - dB Av2 Ta=-40 to +85ºC, Open-Loop, RL=2kΩ, Vo= -3V→0V / 0V→+3V / -3V→+3V 110 125 - dB VOM1 RL=10kΩ ±3.5 ±4.0 - V VOM2 Ta=-40 to +85ºC, RL=10kΩ ±3.5 ±4.0 - V VOM3 RL=2kΩ ±3.5 ±4.0 - V VOM4 Ta=-40 to +85ºC, RL=2kΩ ±3.5 ±4.0 - V ICC1 AV=+1, RL=∞ - 0.85 1.1 mA ICC2 Ta=-40 to +85ºC, AV=+1, RL=∞ - 0.9 1.25 mA Output Characteristics Maximum Output Voltage Supply Characteristics Supply Current -4- E1 NJM2729 ● EXPLANATION OF MEASUREMENT CONDITION PARAMETER Input Offset Voltage Drift Explanation 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. E1 -5- NJM2729 ■ TYPICAL CHARACTERISTICS Input Offset Voltage Distribution + Input Offset Voltage Distribution - V /V =±15V,Ta=25℃ 50 40 Number Of Amplifiers Number Of Amplifiers 40 30 20 10 20 10 0 -70-60-50-40-30-20-10 0 10 20 30 40 50 60 70 Input Offset Voltage Drift Distribution Input Offset Voltage Drift Distribution + Input Offset Voltage [μV] - V /V =±15V,Ta=-40 to 25℃ 40 Number Of Amplifiers 20 15 10 5 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 Input Offset Voltage Drift [μV/℃] 0 1 0.2 0.4 0.6 0.8 1 Input Offset Volotage Drift Distribution + - V /V =±5V,Ta=-40 to 25℃ 40 35 35 30 30 Number Of Amplifiers Number Of Amplifiers + -1 -0.8 -0.6 -0.4 -0.2 0 Input Offset Voltage Drift [μV/℃] Input Offset Voltage Drift Distribution 40 V+/V-=±15V,Ta=25 to 85℃ 35 25 Number Of Amplifiers 30 0 -70-60-50-40-30-20-10 0 10 20 30 40 50 60 70 Input Offset Voltage [μV] 30 25 20 15 10 - V /V =±5V,Ta=25 to 85℃ 25 20 15 10 5 5 0 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 Input Offset Voltage Drift [μV/℃] -6- V+/V -=±5V,Ta=25℃ 50 1 0 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 Input Offset Voltage Drift [μV/℃] E1 NJM2729 ■ TYPICAL CHARACTERISTICS Input Offset Voltage vs. Temperature 100 V+/V-=±5V, VCM=0V 100 80 80 60 60 Input Offset Voltage [µV] Input Offset Voltage [µV] Input Offset Voltage vs. Temperature V+/V-=±15V, VCM=0V 40 20 0 -20 -40 -60 40 20 0 -20 -40 -60 -80 -80 -100 -100 -50 -25 0 25 50 75 Ambient Temperature [ºC] 100 -50 (Supply Voltage) VCM =0V Sample1 (±5V) Sample3 (±5V) 0 Sample1 (±15V) Sample2 (±15V) Sample3 (±15V) -50 -100 -50 -25 0 25 (Supply Voltage) VCM =0V 100 50 75 100 125 V+/V -=±3V 50 Input Offset Voltge [μV] Input Offset Voltage [μV] Sample2 (±5V) 50 0 -100 -50 -25 25 50 75 100 125 Input Bias Curent vs. Supply Voltage VCM =0V VCM=0V 4 3 Input Bias Current [nA] Input Offset Voltge [μV] 0 Ambient Temperature [℃] 40 Sample1 30 Sample2 20 10 0 Sample3 0 4 8 12 16 Supply Voltage [±V] E1 V+/V -=±18V -50 Input Offset Voltage vs. Supply Voltage -10 V+/V -=±5V V+/V -=±15V Ambient Temperature [℃] 50 100 Input Offset Voltage vs. Temperature Input Offset Voltage vs. Temperature 100 -25 0 25 50 75 Ambient Temperature [ºC] 20 24 Sample2 2 Sample1 1 0 -1 Sample3 0 4 8 12 16 20 24 Supply Voltage [±V] -7- NJM2729 ■ TYPICAL CHARACTERISTICS Input Offset Voltage vs. Common Mode Input Voltage 8 60 6 50 Input Offset Voltage [μV] Variation in Input Offset Voltage [µV] Variation in Input Offset Voltage vs. Common Mode Input Voltage 4 2 0 -2 -4 (Supply Voltage) Ta=25℃ Sample1 (±5V) 40 Sample2 (±5V) 30 20 10 0 Sample2 (±15V) -6 -10 -8 -20 -15 -15 -10 -5 0 5 10 15 10 15 + - V /V =±15V 60 Input offset Voltage [μV] Input Offset Voltage [μV] 5 50 40 30 V+/V-=±3V 20 V+/V-=±5V 10 0 V+/V-=±15V -10 -20 -20 -15 -10 -5 V+/V-=±18V 0 5 10 40 30 Ta=25℃ 10 0 Ta=-40℃ -10 15 Common Mode Input Voltage [V] -20 -15 20 + Input Offset Voltage Change [μV] Ta=25℃ Ta=85℃ 20 10 Ta=-40℃ 0 4 8 12 16 Supply Voltage [±V] 20 -5 0 5 10 Common Mode Input Voltage [V] 15 24 - V /V =±15V, Gv=100dB, Ta=25℃ 4 40 30 -10 Warm Up Input Offset Voltage Drift (Temperature) Vcm=0V 50 Ta=85℃ 20 Input Offset Voltage vs. Supply Voltage Input offset Voltage [μV] 0 (Temperature) (Supply Voltage) Ta=25℃ 50 -8- -5 Input Offset Voltage vs. Common Mode Input Voltage Input Offset Voltage vs. Common Mode Input Voltage 0 -10 Sample3 (±15V) Common Mode Input Voltage [V] Common Mode Input Voltage [V] 60 Sample3 (±5V) Sample1 (±15V) 3 2 1 0 -1 0 50 100 150 200 Time From Power Supply Turn On [sec] E1 NJM2729 ■ TYPICAL CHARACTERISTICS Input Offset Voltage vs. Output Voltage + Input Offset Voltage vs. Trim Resistance - V /V =±15V, Gv=100dB, R L=2kΩ, Ta=25℃ -12.5 -13 3 Input Offset Voltage [mV] Input Offset Voltage [uV] V+/V-=±15V, Gv=60dB, Ta=25℃ 4 -13.5 -14 -14.5 -15 -15.5 -16 2 1 0 -1 -2 -3 -16.5 -15 -10 -5 0 5 10 -4 15 0 5 Equivalent Input Noise Voltage + Equivalent Input Noise Voltage [μV] Equivalent Input Noise Voltagte [μV] 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 2 4 6 8 Time [sec] 20 10 - V /V =±5V, BP=1~100Hz 0.8 0.8 0 15 Equivalent Input Noise Voltage V+/V -=±15V, BP=1~100Hz -0.8 10 Trim resistance Rp [kΩ] Output Voltage [V] 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 0 2 4 6 Time [sec] 8 10 Equivalent Input Noise Voltage Rf=10kΩ, Rs=100Ω, Rg=100Ω, Ta=25℃ Equivalent Input Noise Voltage [nV/√Hz] 16 E1 14 12 V+/V-=±5V 10 8 V+/V-=±15V 6 4 2 0 1 10 100 Frequency [Hz] 1000 -9- NJM2729 ■ TYPICAL CHARACTERISTICS Input Bias Current vs. Temperature 10 8 8 Sample1 (±15V) Sample2 (±15V) Sample3 (±15V) 6 Sample1 (±5V) Sample2 (±5V) Sample3 (±5V) 4 2 0 -50 -25 0 25 (Supply Voltage) VCM=0V 10 Input Bias Current [nA] Input Bias Current [nA] Input Bias Current vs. Temperature (Supply Voltage) VCM =0V 50 75 100 V+/V-=±18V 6 V /V =±15V V+/V-=±3V 4 2 -25 Ambient Temperature [℃] V+/V -=±15V 2 Input Bias Current [nA] Input Bias Current [nA] Ta=25℃ 1 0.5 Ta=85℃ 100 125 V+/V-=±15V 1.5 V+/V -=±18V 1 0.5 V+/V-=±3V V+/V-=±5V 0 -0.5 -0.5 -1 -15 75 2.5 2 0 50 (Supply Voltage) Ta=25℃ 3 Ta=-40℃ 1.5 25 Input Bias Current vs. Common Mode Input Voltage (Temperature) 2.5 0 Ambient Temperature [℃] Input Bias Current vs. Common Mode Input Voltage 3 - V+/V -=±5V 0 -50 125 + -10 -5 0 5 10 -1 -20 15 -15 -10 -5 0 5 10 15 Common Mode Input Voltage [V] Common Mode Input Voltage [V] Input Offset Current vs. Temperature Input Offset Current vs. Temperature (Supply Voltage) VCM =0V 5 20 (Supply Voltage) VCM =0V 6 Sample1 (±15V) Sample2 (±15V) Sample3 (±15V) 3 Input Offset Current [nA] Input Offset Current [nA] 5 4 Sample1 (±5V) Sample2 (±5V) Sample3 (±5V) 2 1 4 V+/V-=±18V + - V /V =±15V 3 V+/V-=±5V V+/V-=±3V 2 1 0 0 -50 - 10 - -25 0 25 50 75 Ambient Temperature [℃] 100 125 -1 -50 -25 0 25 50 75 100 125 Ambient Temperature [℃] E1 NJM2729 ■ TYPICAL CHARACTERISTICS Input Offset Current vs. Common Mode Input Voltage Input Offset Current vs. Common Mode Input Voltage (Temperature) V+/V-=±15V 2 1.5 1.5 1 Ta=-40℃ 0.5 Ta=85℃ Ta=25℃ Input Offset Current [nA] Input Offset Current [nA] (Supply Voltage) Ta=25℃ 2 0 -0.5 -1 -1.5 1 V+/V-=±15V 0.5 0 -0.5 V+ /V-=±18V -1 -10 -5 0 5 10 -2 -20 15 Common Mode Input Voltage [V] Common Mode Rejection Ratio [dB] V+/V -=±5V 150 100 + - V /V =±3V 50 0 -50 -25 0 25 50 75 100 -5 0 5 10 15 20 V+/V -=±15V, Gv=80dB, Ta=25℃ 140 120 100 80 60 40 2 10 125 3 4 10 10 10 Ambient Temperature [℃] Frequency [Hz] Supply Voltage Rejection Ratio vs. Frequency Supply Voltage Rejection Ratio vs. Temperature + 140 V /V =±14.5 to ±15.5V, Gv=80dB, Ta=25℃ 200 120 100 -SVR 80 60 +SVR 40 20 0 10 10 1 2 10 Frequency [Hz] 3 10 4 10 5 V+/V-=±18V to ±3V - Supply Voltage Rejection Ratio [dB] Common Mode Rejection Ratio [dB] V+/V-=±18V V+/V -=±15V -10 Common Mode Rejection Ratio vs. Frequency (Supply Voltage) VICM =V- +2V to V+-2V 200 -15 Common Mode Input Voltage [V] Common Mode Rejection Ratio vs. Temperature Supply Voltage Rejection Ratio [dB] V+/V -=±5V -1.5 -2 -15 E1 V+/V-=±3V 150 100 50 0 -50 -25 0 25 50 75 100 125 Temperature [℃] - 11 - NJM2729 ■ TYPICAL CHARACTERISTICS Voltage Gain vs. Supply Voltage Voltage Gain vs. Temperature (Supply Voltage) RL=2kΩ 200 + (Temperature) RL=2kΩ 160 - V /V =±18V V+/V -=±15V 150 Ta=25℃ Ta=-40℃ V+/V-=±3V V+/V -=±5V 100 Voltage Gain [dB] Voltage Gain [dB] 150 Ta=85℃ 50 140 130 120 110 0 -50 -25 0 25 50 75 100 100 125 Ambient Temperature [℃] V+/V-=±15V Maximum Output Voltage [V] Ta=-40℃ Ta=25℃ Ta=85℃ 0 Ta=85℃ Ta=25℃ Ta=-40℃ -10 10 2 3 24 10 5 + - V /V =±5V V+/V-=±3V 0 -5 -10 -15 V+/V-=±3V V+/V-=±5V V+/V -=±15V V+/V-=±18V 10 2 3 10 4 10 5 10 10 Load Resistance [Ω] Output Voltage vs. Output Current Maximum output Voltage vs. Temperature (Supply Voltage) RL=2kΩ 20 15 +V OM Ta=-40℃ +V OM Ta=25℃ 5 +V OM Ta=85℃ 0 -V OM Ta=-40℃ -5 -V OM Ta=25℃ -V OM Ta=85℃ -10 0 5 10 15 20 25 Output Current [mA] - 12 - 20 V+/V-=±18V V+/V-=±15V -20 1 10 5 10 V+/V-=±15V 10 -15 16 Load Resistance [Ω] 15 Output Current [V] 4 10 Maximum output Voltage [V] Maximum output Voltage [V] 15 -15 1 10 12 (Supply Voltage) Ta=25℃ 20 10 -5 8 Maximum Output Voltage vs. Load Resistance (Temperature) 5 4 Supply Voltage [±V] Maximum Output Voltage vs. Load Resistance 15 0 30 35 40 10 V+/V-=±5V 5 V+/V-=±18V V+/V-=±15V V+/V-=±3V 0 -5 V+/V-=±5V V+/V-=±3V V+/V-=±18V -10 V+/V-=±15V -15 -20 -50 -25 0 25 50 75 100 125 Ambient Temperature [Ω] E1 NJM2729 ■ TYPICAL CHARACTERISTICS THD+N vs. Frequency THD+N vs. Output Voltage + V /V =±15V, Gv=20dB, R F=10kΩ, Rs=1kΩ, Ta=25℃ 10 1 0.8 1 f=20kHz THD+N [%] THD+N [%] V+/V -=±15V, Gv=20dB, R F=10kΩ, Rs=1kΩ, Vout=100mVrms, Ta=25℃ - 0.1 f=1kHz 0.01 0.6 0.4 0.2 0.001 f=100Hz f=20Hz 0.0001 0.01 0.1 1 0 10 10 100 Gain + 0 + 120 60 60 - V /V =±3V Phase 20 0 -60 - V /V =±18V V+/V-=±15V V+/V-=±5V -20 -40 2 10 3 10 10 4 V+/V-=±3V 5 6 10 10 40 20 V+/V -=±15V, Gv=40dB, R F=10kΩ, Rs=100Ω, R T=50Ω Gain 0 -60 -180 -40 2 10 Ta=-40℃ Ta=25℃ Ta=85℃ 3 10 4 10 5 10 Frequency [Hz] -120 6 10 -180 7 10 40dB Gain/Phase vs. Frequency (Load Capacitance) 40dB Gain/Phase vs. Frequency (Temperature) V+/V-=±15V, Gv=40dB, R F=10kΩ, Rs=100Ω, R T=50Ω, Ta=25℃ V+/V-=±5V, Gv=40dB, R F=10kΩ, Rs=100Ω, R T=50Ω CL=0.2μF 60 60 CL =0.01μF 0 CL=0F -60 CL=0.2μF CL=0.1μF CL=0.047μF CL=0.01μF CL=0F -20 -40 10 2 60 3 10 10 4 10 5 Frequency [Hz] 10 6 10 40 20 120 Ta=-40℃ Ta=25℃ Ta=85℃ gain 60 Phase 0 -60 0 -120 -20 -180 -40 2 10 7 180 Ta=-40℃ Ta=25℃ Ta=85℃ 3 10 4 10 5 10 Frequency [Hz] Phase [deg] CL=0.047μF Phase 0 120 CL =0.1μF Gain 20 80 Phase [deg] 40 180 Voltage Gain [dB] 80 Voltage Gain [dB] 60 0 -20 7 120 Phase -120 10 180 Ta=-40℃ Ta=25℃ Ta=85℃ Frequency [Hz] E1 6 10 Phase [deg] V+/V-=±5V 80 Phase [deg] Voltage Gain [dB] V+/V -=±18V V+/V-=±15V 180 Voltage Gain [dB] Gv=40dB, R F=10kΩ, Rs=100Ω, RT=50Ω, Ta=25℃ 40 5 10 40dB Gain/Phase vs. Frequency (Temperature) 40dB Gain/Phase vs. Frequency (Supply Voltage) 60 4 10 Frequency [Hz] Output Voltage [Vrms] 80 1000 -120 6 10 -180 7 10 - 13 - NJM2729 ■ TYPICAL CHARACTERISTICS 20 15 + 15 V+/V -=±18V V+/V-=±15V V+/V -=±5V 10 + - V /V =±15V, Gv=0dB, R T=50Ω, C L=0.1μF 20 Voltage Gain [dB] Voltage Gain [dB] V.F.Peak (Temperature) V.F. Peak (Supply Voltage) Gv=0dB, R T=50Ω, C L=0.1μF, Ta=25℃ - V /V =±3V 5 0 -5 Ta=85℃ Ta=25℃ Ta=-40℃ 10 5 0 -5 -10 3 10 4 5 10 -10 3 10 6 10 10 Frequency [Hz] 4 10 10 5 6 10 Frequency [Hz] V.F.Peak (Load Capacitance) + - V /V =±15V, Gv=0dB, R T=50Ω, Ta=25℃ 20 CL=0.2μF Voltage Gain [dB] 15 CL=0.1μF 10 CL=0.047μF CL=0.01μF 5 CL=0F 0 -5 -10 3 10 104 105 106 Frequency [Hz] Pulse Response (Temperature) + Pulse Response (Temperature) - V /V =±15V, R L=2kΩ, C L=5pF 2 0.8 V+/V -=±15V, R L=2kΩ, C L=5pF 2 0.8 0.4 1.6 0.4 1.2 0 1.2 0 -0.4 Ta=85℃ 0.4 -0.8 Ta=25℃ 0 -0.4 0.8 Output Ta=-40℃ Ta=25℃ Ta=85℃ 0.4 -1.2 0 -1.6 -0.4 -2 -0.8 -0.8 Input [V] Input 0.8 Output [V] 1.6 Input [V] Output [V] Input -1.2 Ta=-40℃ -0.4 -0.8 - 14 - Output -2 -1 0 1 2 3 Time [μs] 4 5 6 -1.6 -2 -1 0 1 2 3 Time [μs] 4 5 6 -2 E1 NJM2729 ■ TYPICAL CHARACTERISTICS Pulse Response (Temperature) Pulse Response (Temperature) V+/V -=±5V, R L=2kΩ, C L=5pF 2 V+/V-=±5V, R L=2kΩ, C L=5pF 2 0.8 0.8 0.4 1.6 0.4 1.2 0 1.2 0 -0.4 Ta=85℃ 0.4 -0.8 Ta=25℃ 0 -0.4 -0.8 Ta=-40℃ Output -2 -1 0 1 2 3 4 Time [μs] 5 6 -0.4 0.8 Output -1.2 0 -1.6 -0.4 -2 -0.8 -0.8 -1.2 -1.6 -2 -1 Pulse Response 0 1 2 3 4 Time [μs] 5 6 -2 Pulse Response (Supply Voltage, Load Capacitance) RL=2kΩ, Ta=25℃ 2 Ta=-40℃ Ta=25℃ Ta=85℃ 0.4 Input [V] Input 0.8 Output [V] 1.6 Input [V] Output [V] Input (Supply Voltage, Load Capacitance) RL=2kΩ, Ta=25℃ 2 0.8 0.8 Input 1.6 1.2 -0.8 V+/V-=±5V CL=1500pF -5 0 0 Time [μs] 5 10 Output [V] -0.4 0.8 Output -1.2 0 -1.6 -0.4 -2 -0.8 V+/V -=±15V CL=1500pF -5 - -1.2 V /V =±5V CL=100pF -1.6 0 Time [μs] 5 10 -2 Pulse Response (Load Capacitance) - V /V =±15V, R L=2kΩ, Ta=25℃ 2 + -0.8 V+/V -=±15V CL=100pF Pulse Response (Load Capacitance) + V+/V -=±5V CL=1500pF 0.4 Input [V] V+/V-=±5V CL=100pF Output 1.2 -0.8 0 -0.4 0 -0.4 V+/V-=±15V CL=1500pF 0.4 0.4 - V /V =±15V CL=100pF Input 0.8 1.6 Input [V] Output [V] + 0.4 0.8 V+/V -=±15V, R L=2kΩ, Ta=25℃ 2 0.8 Input 0.8 Input 1.6 0.4 0 1.2 0 0.8 -0.4 -0.4 0.4 -0.8 0 0 -1.6 -0.4 -0.8 -20 E1 -10 0 10 20 30 Time [μs] 40 50 60 -2 -0.8 -20 -0.8 CL=0.2μF CL=0.1μF CL=0.047μF Output -1.2 Output -0.4 0.4 -1.2 -1.6 CL=0.01μF -10 0 Input [V] Output [V] 1.2 0.4 Input [V] CL=0.01μF CL=0.047μF CL=0.1μF CL=0.2μF Output [V] 1.6 10 20 30 Time [μs] 40 50 60 -2 - 15 - NJM2729 ■ TYPICAL CHARACTERISTICS Slew Rate vs. Temperature Unity Gain Frequency vs. Temperature RL=2kΩ 2 Unity Gain Frequency [MHz] 1 Slew Rate [V/μs] 0.8 0.6 V+/V -=±15V RISE V+/V -=±15V FALL 0.4 0.2 0 -50 + -25 0 25 1.5 + 1 V+/V -=±5V 0.5 50 75 100 0 -50 125 -25 0 RL=∞ Supply Current [mA] Supply Current [mA] 2 Ta=25℃ Ta=85℃ 1.2 Ta=-40℃ 0.8 0.4 0 4 8 12 16 Supply Voltage [±V] - 16 - 20 24 100 125 V+/V-=±18V 1.6 V+ /V -=±15V 1.2 V+/V-=±5V 0.8 V+/V-=±3V 0.4 0 75 (Supply Voltage) RL=∞ 2.4 1.6 50 Supply Current vs. Temperature Supply Current vs. Supply Voltage (Temperature) 2 25 Temperature [℃] Ambient Temperature [℃] 2.4 - V /V =±15V - V /V =±5V RISE V+/V-=±5V FALL Gv=40dB, R F=10kΩ, Rs=100Ω, R T=50Ω 0 -50 -25 0 25 50 75 100 125 Ambient Temperature [℃] 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 6 4 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=20kΩ V+ 1 2 − 8 7 NJM2729 3 + 6 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 NJM2729 R3 3 R4 + 6 4 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