NJM2729
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1
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Precision Operational Amplifier
■ FEATURES ■ PACKAGE OUTLINE
●Precision VIO=60µV max.
V
IO=100µV max. (Ta=-40ºC to +85ºC)
●Low Offset Drift ΔVIO/ΔT=0.9µV/ºC max. (Ta=-40 to +85ºC)
●Specified for ±15V and ±5V operation
●CMR 130dB min.
●Low Noise V
NI=80nVrms typ. at f=1 to 100Hz
en=8nV/√Hz typ. at f=100Hz
●Open Loop Gain Av=130dB min.
●Guaranteed Temperature Ta=-40ºC to +85ºC
●Unity Gain Stable
●Operating Voltage Vopr=±3V to ±18V
●Unity Gain Frequency f
T=1.1MHz typ.
●Supply Current Icc=2mA max.
●Package SOP8 JEDEC 150mil
■ GENERAL DESCRIPTION
The NJM2729 is a high performance operational amplifier features 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 are 100% 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
NJM2729E
( SOP8 )
8
7
6
5
1
2
3
4
BALANC
E
V
−
−INPU
T
+INPU
T
NC
BALANCE
V
+
OUTPUT
(Top View)
5.0±0.3
1.27
3.9±0.2
6.0±0.4
85
14
0.74MAX
SOP8 MEET JEDEC MS-012-AA
NJM2729
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■ ABSOLUTE MAXIMUM RATING (Ta=25ºC Unless Otherwise Specified)
PARAMETER SYMBO
L
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 TEST CONDITION MIN. TYP. MAX. UNIT
Supply Voltage V+/V- ±3 - ±18 V
■ ELECTRONIC CHARACTERISTICS (V+/V-=±15V Ta=+25ºC, VICM=0V unless otherwise specified)
● DC CHARACTERISTICS
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Input Characteristics
Input Offset Voltage VIO1 - 20 60 µV
V
IO2 Ta=-40 to +85ºC - 20 100 µV
Input Offset Voltage Drift ΔVio/T Ta=-40→+25ºC / Ta=+25ºC→+85ºC - 0.3 0.9 µV/ºC
Common Mode Input Voltage Range VICM1 ±13 ±14 - V
V
ICM2 Ta=-40 to +85ºC ±13 ±13.5 - V
Common Mode Rejection Ratio CMR1 VCM=0V→-13V / VCM=0V→+13V 130 140 - dB
CMR2
Ta=-40 to +85ºC,
VCM=0V→-13V / VCM=0V→+13V 120 140 - dB
Supply Voltage Rejection Ratio SVR1 V+/V-=±3V to ±18V 115 125 - dB
SVR2
Ta=-40 to +85ºC,V+/V-=±3V to ±18V 110 120 - dB
Input Bias Current IB1 -0.2 1.2 2.8 nA
I
B2 Ta=-40 to +85ºC -1.5 1.7 6 nA
Input Bias Current Drift ΔIB/T Ta= -40 →+85ºC - 8 60 pA/ºC
Input Offset Current IIO1 - 0.3 2.8 nA
I
IO2 Ta=-40 to +85ºC - 0.3 4.5 nA
Input Offset Current Drift ΔIIO/T Ta=-4 0→+85ºC - 1.5 72 pA/ºC
Differential Input Impedance RID Theoretical value by design. - 90 - MΩ
Common-Mode Input Impedance RIC Theoretical value by design. - 800 - GΩ
Input Offset Voltage Trim Viotri Rp=20kΩ - ±3 - mV
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
NJM2729
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● DC CHARACTERISTICS
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Output Characteristics
Maximum Output Voltage VOM1 RL=10kΩ ±13.5 ±14.0 - V
V
OM2 Ta=-40 to +85ºC, RL=10kΩ ±13.0 ±14.0 - V
V
OM3 RL=2kΩ ±12.5 ±13.0 - V
V
OM4 Ta=-40 to +85ºC, RL=2kΩ ±12.0 ±13.0 - V
V
OM5 RL=1kΩ ±12.0 ±12.5 - V
Output Impedance RO Open-Loop - 60 - Ω
Supply Characteristics
Supply Current ICC1 AV=+1, RL=∞ - 1.6 2 mA
I
CC2 Ta=-40 to +85ºC, AV=+1, RL=∞ - 1.7 2.5 mA
I
CC3 V+/V-=±3V, AV=+1, RL=∞ - 0.58 0.75 mA
Power Dissipation PD1 AV=+1, RL=∞ - 50 60 mW
P
D1 V+/V-=±3V, AV=+1, RL=∞ - 4.2 5.4 mW
● AC CHARACTERISTICS
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Frequency Characteristics
Unity Gain Frequency fT A
V=+100, RL=2kΩ, CL=10pF - 1.1 - MHz
Slew Rate +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
Noise Characteristics
Equivalent Input Noise Voltage VNI fo=1Hz to 100Hz - 80 - nVrms
Equivalent Input Noise Current INI fo=1Hz to 100Hz - 3 - pArms
NJM2729
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■ ELECTRONIC CHARACTERISTICS (V+/V-=±5V Ta=+25ºC, VICM=0V unless otherwise specified)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Input Characteristics
Input Offset Voltage VIO1 - 30 70 µV
V
IO2 Ta=-40 to +85ºC - 35 110 µV
Common Mode Input Voltage Range VICM1 ±3 ±3.9 - V
V
ICM2 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
Input Bias Current IB1 -0.2 0.7 2 nA
I
B2 Ta=-40 to +85ºC -0.2 1 6 nA
Input Offset Current IIO1 - 0.3 2.8 nA
I
IO2 Ta=-40 to +85ºC - 0.3 4.5 nA
Voltage Gain 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
Output Characteristics
Maximum Output Voltage VOM1 RL=10kΩ ±3.5 ±4.0 - V
V
OM2 Ta=-40 to +85ºC, RL=10kΩ ±3.5 ±4.0 - V
V
OM3 RL=2kΩ ±3.5 ±4.0 - V
V
OM4 Ta=-40 to +85ºC, RL=2kΩ ±3.5 ±4.0 - V
Supply Characteristics
Supply Current ICC1 AV=+1, RL=∞ - 0.85 1.1 mA
I
CC2 Ta=-40 to +85ºC, AV=+1, RL=∞ - 0.9 1.25 mA
NJM2729
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● EXPLANATION OF MEASUREMENT CONDITION
PARAMETER Explanation
Input Offset Voltage Drift Input Offset Voltage Drift = ΔVIO / Δt
Δt : Amount of Temperature change.
ΔVIO : 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 | ( ΔVIN / ΔVIO )|
ΔVIN : Amount of Input Voltage.
ΔVIO : Amount of Input Offset Voltage.
Supply Voltage Rejection Ratio SVR = 20log |( ΔVS / ΔVIO )|
ΔVS : Amount of supply Voltage.
ΔVIO : Amount of Input Offset Voltage.
Common Mode Input Impedance RINCM = ΔVIN / ΔIB
ΔVIN : Amount of Input Voltage.
ΔIB : Amount of Input bias current.
Voltage Gain AV = 20log |( ΔVIN / ΔVO )|
ΔVO : Amount of output Voltage.
ΔVIN : Amount of Input Voltage.
NJM2729
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■ TYPICAL CHARACTERISTICS
0
5
10
15
20
25
30
35
40
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
Input Offset Voltage Drift Distribution
V+/V-=±5V,Ta=-40 to 25℃
Number Of Amplifiers
Input Offset Voltage Drift [μV/℃]
0
5
10
15
20
25
30
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
Input Offset Voltage Drift Distribution
V+/V-=±15V,Ta=-40 to 25℃
Number Of Amplifiers
Input Offset Voltage Drift [μV/℃]
0
5
10
15
20
25
30
35
40
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
Input Offset Volotage Drift Distribution
V+/V-=±5V,Ta=25 to 85℃
Number Of Amplifiers
Input Offset Voltage Drift [μV/℃]
0
5
10
15
20
25
30
35
40
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
Input Offset Voltage Drift Distribution
V+/V-=±15V,Ta=25 to 85℃
Number Of Amplifiers
Input Offset Voltage Drift [μV/℃]
0
10
20
30
40
50
-70-60-50-40-30-20-10 0 10 20 30 40 50 60 70
Input Offset Voltage Distribution
V+/V-=±5V,Ta=25℃
Number Of Amplifiers
Input Offset Voltage [μV]
0
10
20
30
40
50
-70-60-50-40-30-20-10 0 10 20 30 40 50 60 70
Input Offset Voltage Distribution
V+/V-=±15V,Ta=25℃
Number Of Amplifiers
Input Offset Voltage [μV]
NJM2729
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■ TYPICAL CHARACTERISTICS
-100
-50
0
50
100
-50 -25 0 25 50 75 100 125
Input Offset Voltage vs. Temperature
(Supply Voltage)
VCM=0V
Input Offset Voltage [μV]
Ambient Temperature [℃]
Sample2 (±15V)
Sample1 (±15V)
Sample3 (±15V)
Sample3 (±5V)
Sample2 (±5V)
Sample1 (±5V)
-10
0
10
20
30
40
50
04812162024
Input Offset Voltage vs. Supply Voltage
VCM=0V
Input Offset Voltge [μV]
Supply Voltage [±V]
Sample2
Sample1
Sample3
-1
0
1
2
3
4
0 4 8 12 16 20 24
Input Bias Curent vs. Supply Voltage
VCM=0V
Input Bias Current [nA]
Supply Voltage [±V]
Sample2 Sample1
Sample3
-100
-50
0
50
100
-50 -25 0 25 50 75 100 125
Input Offset Voltage vs. Temperature
(Supply Voltage)
VCM=0V
Input Offset Voltge [μV]
Ambient Temperature [℃]
V+/V-=±18V
V+/V-=±15V
V+/V-=±5V
V+/V-=±3V
Input Offset Voltage vs. Temperature
V+/V-=±15V, VCM=0V
-100
-80
-60
-40
-20
0
20
40
60
80
100
-50 -25 0 25 50 75 100
Ambient Temperature [ºC]
Input Offset Voltage [μV]
Input Offset Voltage vs. Temperature
V+/V-=±5V, VCM=0V
-100
-80
-60
-40
-20
0
20
40
60
80
100
-50 -25 0 25 50 75 100
Ambient Temperature [ºC]
Input Offset Voltage [μV]
NJM2729
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■ TYPICAL CHARACTERISTICS
-20
-10
0
10
20
30
40
50
60
-15 -10 -5 0 5 10 15
Input Offset Voltage vs. Common Mode Input Voltage
(Temperature)
V+/V-=±15V
Input offset Voltage [μV]
Common Mode Input Voltage [V]
Ta=-40℃
Ta=25℃ Ta=85℃
0
10
20
30
40
50
0 4 8 12162024
Input Offset Voltage vs. Supply Voltage
(Temperature)
Vcm=0V
Input offset Voltage [μV]
Supply Voltage [±V]
Ta=-40℃
Ta=25℃
Ta=85℃
-1
0
1
2
3
4
0 50 100 150 200
Warm Up Input Offset Voltage Drift
V+/V-=±15V, Gv=100dB, Ta=25℃
Input Offset Voltage Change [μV]
Time From Power Supply Turn On [sec]
-20
-10
0
10
20
30
40
50
60
-20 -15 -10 -5 0 5 10 15 20
Input Offset Voltage vs. Common Mode Input Voltage
(Supply Voltage)
Ta=25℃
Input Offset Voltage [μV]
Common Mode Input Voltage [V]
V+/V-=±18V
V+/V-=±15V
V+/V-=±5V
V+/V-=±3V
-8
-6
-4
-2
0
2
4
6
8
-15 -10 -5 0 5 10 15
Variation in Input Offset Voltage
vs. Common Mode Input Voltage
Variation in Input Offset Voltage [µV]
Common Mode Input Voltage [V]
-20
-10
0
10
20
30
40
50
60
-15 -10 -5 0 5 10 15
Input Offset Voltage
vs. Common Mode Input Voltage
(Supply Voltage)
Ta=25℃
Input Offset Voltage [μV]
Common Mode Input Voltage [V]
Sample2 (±15V)
Sample1 (±15V)
Sample3 (±15V)
Sample3 (±5V)
Sample2 (±5V)
Sample1 (±5V)
NJM2729
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■ TYPICAL CHARACTERISTICS
-16.5
-16
-15.5
-15
-14.5
-14
-13.5
-13
-12.5
-15 -10 -5 0 5 10 15
Input Offset Voltage vs. Output Voltage
V+/V-=±15V, Gv=100dB, R L=2kΩ, Ta=25℃
Input Offset Voltage [uV]
Output Voltage [V]
-4
-3
-2
-1
0
1
2
3
4
0 5 10 15 20
Input Offset Voltage vs. Trim Resistance
V+/V-=±15V, Gv=60dB, Ta=25℃
Input Offset Voltage [mV]
Trim resistance Rp [kΩ]
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
0246810
Equivalent Input Noise Voltage
V+/V-=±15V, BP=1~100Hz
Equivalent Input Noise Voltagte [μV]
Time [sec]
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
0246810
Equivalent Input Noise Voltage
V+/V-=±5V, BP=1~100Hz
Equivalent Input Noise Voltage [μV]
Time [sec]
0
2
4
6
8
10
12
14
16
1 10 100 1000
Equivalent Input Noise Voltage
Rf=10kΩ, Rs=100Ω, Rg=100Ω, Ta=25℃
Equivalent Input Noise Voltage [nV/√Hz]
Frequency [Hz]
V+/V-=±15V
V+/V-=±5V
NJM2729
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■ TYPICAL CHARACTERISTICS
-1
-0.5
0
0.5
1
1.5
2
2.5
3
-15 -10 -5 0 5 10 15
Input Bias Current vs. Common Mode Input Voltage
(Temperature)
V+/V-=±15V
Input Bias Current [nA]
Common Mode Input Voltage [V]
Ta=-40℃
Ta=25℃
Ta=85℃
0
2
4
6
8
10
-50 -25 0 25 50 75 100 125
Input Bias Current vs. Temperature
(Supply Voltage)
VCM=0V
Input Bias Current [nA]
Ambient Temperature [℃]
V+/V-=±18V
V+/V-=±15V
V+/V-=±5V
V+/V-=±3V
-1
-0.5
0
0.5
1
1.5
2
2.5
3
-20-15-10-5 0 5 101520
Input Bias Current vs. Common Mode Input Voltage
(Supply Voltage)
Ta=25℃
Input Bias Current [nA]
Common Mode Input Voltage [V]
V+/V-=±18V
V+/V-=±15V
V+/V-=±5V
V+/V-=±3V
-1
0
1
2
3
4
5
6
-50-250 255075100125
Input Offset Current vs. Temperature
(Supply Voltage)
VCM=0V
Input Offset Current [nA]
Ambient Temperature [℃]
V+/V-=±18V
V+/V-=±15V
V+/V-=±5V
V+/V-=±3V
0
2
4
6
8
10
-50 -25 0 25 50 75 100 125
Input Bias Current vs. Temperature
(Supply Voltage)
VCM=0V
Input Bias Current [nA]
Ambient Temperature [℃]
Sample2 (±15V)
Sample1 (±15V)
Sample3 (±15V)
Sample3 (±5V)
Sample2 (±5V)
Sample1 (±5V)
0
1
2
3
4
5
-50 -25 0 25 50 75 100 125
Input Offset Current vs. Temperature
(Supply Voltage)
VCM=0V
Input Offset Current [nA]
Ambient Temperature [℃]
Sample2 (±15V)
Sample1 (±15V)
Sample3 (±15V)
Sample3 (±5V)
Sample2 (±5V)
Sample1 (±5V)
NJM2729
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■ TYPICAL CHARACTERISTICS
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
-15 -10 -5 0 5 10 15
Input Offset Current vs. Common Mode Input Voltage
(Temperature)
V+/V-=±15V
Input Offset Current [nA]
Common Mode Input Voltage [V]
Ta=-40℃
Ta=25℃ Ta=85℃
0
50
100
150
200
-50-250 255075100125
Supply Voltage Rejection Ratio vs. Temperature
V+/V-=±18V to ±3V
Supply Voltage Rejection Ratio [dB]
Temperature [℃]
40
60
80
100
120
140
102103104105
Common Mode Rejection Ratio vs. Frequency
V+/V-=±15V, Gv=80dB, Ta=25℃
Common Mode Rejection Ratio [dB]
Frequency [Hz]
20
40
60
80
100
120
140
100101102103104
Supply Voltage Rejection Ratio vs. Frequency
V+/V-=±14.5 to ±15.5V, Gv=80dB, Ta=25℃
Supply Voltage Rejection Ratio [dB]
Frequency [Hz]
-SVR
+SVR
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
-20-15-10-5 0 5 101520
Input Offset Current vs. Common Mode Input Voltage
(Supply Voltage)
Ta=25℃
Input Offset Current [nA]
Common Mode Input Voltage [V]
V+/V-=±18V
V+/V-=±15V
V+/V-=±5V
V+/V-=±3V
0
50
100
150
200
-50 -25 0 25 50 75 100 125
Common Mode Rejection Ratio vs. Temperature
(Supply Voltage)
VICM=V- +2V to V+-2V
Common Mode Rejection Ratio [dB]
Ambient Temperature [℃]
V+/V-=±18V
V+/V-=±15V V+/V-=±5V
V+/V-=±3V
NJM2729
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■ TYPICAL CHARACTERISTICS
-20
-15
-10
-5
0
5
10
15
20
-50 -25 0 25 50 75 100 125
Maximum output Voltage vs. Temperature
(Supply Voltage)
RL=2kΩ
Maximum output Voltage [V]
Ambient Temperature [Ω]
V+/V-=±18V
V+/V-=±18V
V+/V-=±15V
V+/V-=±15V
V+/V-=±5V
V+/V-=±5V
V+/V-=±3V
V+/V-=±3V
0
50
100
150
200
-50 -25 0 25 50 75 100 125
Voltage Gain vs. Temperature
(Supply Voltage)
RL=2kΩ
Voltage Gain [dB]
Ambient Temperature [℃]
V+/V-=±18V
V+/V-=±15V
V+/V-=±5V V+/V-=±3V
100
110
120
130
140
150
160
04812162024
Voltage Gain vs. Supply Voltage
(Temperature)
RL=2kΩ
Voltage Gain [dB]
Supply Voltage [±V]
Ta=-40℃
Ta=25℃ Ta=85℃
-15
-10
-5
0
5
10
15
0 5 10 15 20 25 30 35 40
Output Voltage vs. Output Current
V+/V-=±15V
Output Current [V]
Output Current [mA]
+VOM Ta=25℃
-VOM Ta=25℃
+VOM Ta=-40℃
-VOM Ta=-40℃
-VOM Ta=85℃
+VOM Ta=85℃
-20
-15
-10
-5
0
5
10
15
20
101102103104105
Maximum Output Voltage vs. Load Resistance
(Supply Voltage)
Ta=25℃
Maximum Output Voltage [V]
Load Resistance [Ω]
V+/V-=±18V
V+/V-=±18V
V+/V-=±15V
V+/V-=±15V
V+/V-=±5V
V+/V-=±5V
V+/V-=±3V
V+/V-=±3V
-15
-10
-5
0
5
10
15
101102103104105
Maximum Output Voltage vs. Load Resistance
(Temperature)
V+/V-=±15V
Maximum output Voltage [V]
Load Resistance [Ω]
Ta=-40℃
Ta=-40℃
Ta=25℃
Ta=25℃
Ta=85℃
Ta=85℃
NJM2729
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■ TYPICAL CHARACTERISTICS
0.0001
0.001
0.01
0.1
1
10
0.01 0.1 1 10
THD+N vs. Output Voltage
V+/V-=±15V, Gv=20dB, R F=10kΩ,
Rs=1kΩ, Ta=25℃
THD+N [%]
Output Voltage [Vrms]
f=20Hz
f=100Hz
f=1kHz
f=20kHz
0
0.2
0.4
0.6
0.8
1
10 100 1000 104105106
THD+N vs. Frequency
V+/V-=±15V, Gv=20dB, R F=10kΩ,
Rs=1kΩ, Vout=100mVrms, Ta=25℃
THD+N [%]
Frequency [Hz]
-40
-20
0
20
40
60
80
-180
-120
-60
0
60
120
180
102103104105106107
40dB Gain/Phase vs. Frequency (Temperature)
V+/V-=±15V, Gv=40dB, R F=10kΩ,
Rs=100Ω, RT=50Ω
Voltage Gain [dB]
Phase [deg]
Frequency [Hz]
Gain
Phase
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=85℃
Ta=-40℃
Ta=25℃
-40
-20
0
20
40
60
80
-180
-120
-60
0
60
120
180
102103104105106107
40dB Gain/Phase vs. Frequency (Load Capacitance)
V+/V-=±15V, Gv=40dB, R F=10kΩ,
Rs=100Ω, RT=50Ω, Ta=25℃
Voltage Gain [dB]
Phase [deg]
Frequency [Hz]
Gain
Phase
CL=0F
CL=0.2μF
CL=0.1μF
CL=0.01μF
CL=0.047μF
CL=0F
CL=0.2μF
CL=0.1μF
CL=0.01μF
CL=0.047μF
-40
-20
0
20
40
60
80
-180
-120
-60
0
60
120
180
102103104105106107
40dB Gain/Phase vs. Frequency (Supply Voltage)
Gv=40dB, RF=10kΩ, Rs=100Ω,
RT=50Ω, Ta=25℃
Voltage Gain [dB]
Phase [deg]
Frequency [Hz]
Gain
Phase
V+/V-=±15V
V+/V-=±5V
V+/V-=±3V
V+/V-=±3V
V+/V-=±18V
V+/V-=±5V
V+/V-=±18V
V+/V-=±15V
-40
-20
0
20
40
60
80
-180
-120
-60
0
60
120
180
102103104105106107
40dB Gain/Phase vs. Frequency (Temperature)
V+/V-=±5V, Gv=40dB, R F=10kΩ,
Rs=100Ω, RT=50Ω
Voltage Gain [dB]
Phase [deg]
Frequency [Hz]
gain
Phase
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=85℃
Ta=-40℃
Ta=25℃
NJM2729
-
14
-E1
■ TYPICAL CHARACTERISTICS
-10
-5
0
5
10
15
20
103104105106
V.F.Peak (Temperature)
V+/V-=±15V, Gv=0dB, R T=50Ω, CL=0.1μF
Voltage Gain [dB]
Frequency [Hz]
Ta=25℃
Ta=85℃
Ta=-40℃
-10
-5
0
5
10
15
20
103104105106
V.F.Peak (Load Capacitance)
V+/V-=±15V, Gv=0dB, R T=50Ω, Ta=25℃
Voltage Gain [dB]
Frequency [Hz]
CL=0F
CL=0.01μF
CL=0.047μF
CL=0.2μF
CL=0.1μF
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2
-2
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
-2 -1 0 1 2 3 4 5 6
Pulse Response (Temperature)
V+/V-=±15V, RL=2kΩ, CL=5pF
Output [V]
Input [V]
Time [μs]
Ta=-40℃
Ta=25℃
Ta=85℃
Input
Output
-10
-5
0
5
10
15
20
103104105106
V.F. Peak (Supply Voltage)
Gv=0dB, RT=50Ω, CL=0.1μF, Ta=25℃
Voltage Gain [dB]
Frequency [Hz]
V+/V-=±15V
V+/V-=±3V
V+/V-=±5V
V+/V-=±18V
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2
-2
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
-2-10123456
Pulse Response (Temperature)
V+/V-=±15V, RL=2kΩ, CL=5pF
Output [V]
Input [V]
Time [μs]
Ta=-40℃
Ta=25℃
Ta=85℃
Input
Output
NJM2729
-
15
-
E1
■ TYPICAL CHARACTERISTICS
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2
-2
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
-20-100 102030405060
Pulse Response (Load Capacitance)
V+/V-=±15V, RL=2kΩ, Ta=25℃
Output [V]
Input [V]
Time [μs]
CL=0.01μF
Input
Output
CL=0.047μF
CL=0.1μF
CL=0.2μF
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2
-2
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
-20-100 102030405060
Pulse Response (Load Capacitance)
V+/V-=±15V, RL=2kΩ, Ta=25℃
Output [V]
Input [V]
Time [μs]
CL=0.01μF
Input
Output CL=0.047μF
CL=0.1μFCL=0.2μF
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2
-2
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
-2 -1 0 1 2 3 4 5 6
Pulse Response (Temperature)
V+/V-=±5V, RL=2kΩ, CL=5pF
Output [V]
Input [V]
Time [μs]
Ta=-40℃
Ta=25℃
Ta=85℃
Input
Output
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2
-2
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
-2 -1 0 1 2 3 4 5 6
Pulse Response (Temperature)
V+/V-=±5V, RL=2kΩ, CL=5pF
Output [V]
Input [V]
Time [μs]
Ta=-40℃
Ta=25℃
Ta=85℃
Input
Output
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2
-2
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
-5 0 5 10
Pulse Response
(Supply Voltage, Load Capacitance)
RL=2kΩ, Ta=25℃
Output [V]
Input [V]
Time [μs]
V+/V-=±15V
CL=100pF
Input
Output
V+/V-=±15V
CL=1500pF
V+/V-=±5V
CL=1500pF
V+/V-=±5V
CL=100pF
-0.8
-0.4
0
0.4
0.8
1.2
1.6
2
-2
-1.6
-1.2
-0.8
-0.4
0
0.4
0.8
-5 0 5 10
Pulse Response
(Supply Voltage, Load Capacitance)
RL=2kΩ, Ta=25℃
Output [V]
Input [V]
Time [μs]
V+/V-=±15V
CL=100pF
Input
Output
V+/V-=±15V
CL=1500pF
V+/V-=±5V
CL=1500pF
V+/V-=±5V
CL=100pF
NJM2729
-
16
-E1
■ TYPICAL CHARACTERISTICS
0
0.4
0.8
1.2
1.6
2
2.4
0 4 8 12162024
Supply Current vs. Supply Voltage (Temperature)
RL=∞
Supply Current [mA]
Supply Voltage [±V]
Ta=-40℃
Ta=25℃
Ta=85℃
0
0.4
0.8
1.2
1.6
2
2.4
-50 -25 0 25 50 75 100 125
Supply Current vs. Temperature
(Supply Voltage)
RL=∞
Supply Current [mA]
Ambient Temperature [℃]
V+/V-=±18V
V+/V-=±15V V+/V-=±5V
V+/V-=±3V
0
0.5
1
1.5
2
-50 -25 0 25 50 75 100 125
Unity Gain Frequency vs. Temperature
Gv=40dB, RF=10kΩ, Rs=100Ω, R T=50Ω
Unity Gain Frequency [MHz]
Temperature [℃]
V+/V-=±15V
V+/V-=±5V
0
0.2
0.4
0.6
0.8
1
-50 -25 0 25 50 75 100 125
Slew Rate vs. Temperature
RL=2kΩ
Slew Rate [V/μs]
Ambient Temperature [℃]
V+/V-=±15V
RISE
V+/V-=±15V
FALL
V+/V-=±5V
RISE
V+/V-=±5V
FALL
NJM2729
-
17
-
E1
■ 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
●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).
−
+
V+
V-
2
3 4
6
7
NJM2729
−
+
V+
V-
1
2
3 4
6
7
8
Rp=20kΩ
NJM2729
Fig.1 Power Supply Bypassing Circuit
Fig.2 Offset Voltage Trim Circuit
NJM2729
-
18
-E1
●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.
[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.
−
+
V+
V-
2
3 4
6
7
NJM2729
R
1
R
2
R
3
R
4
Fig.3 Differential Amplifier
