OP270 Datasheet, PDF (5/16 Pages) Analog Devices – Dual Very Low Noise Precision Operational Amplifier

10
9 TA = 25؇C
8 ^VS ^{= ؎15V}
7
6
5
4
3
1/f CORNER = 5Hz
2
1
1
10
100
1k
FREQUENCY (Hz)
TPC 1. Voltage Noise Density
vs. Frequency
10
T_A = 25؇C
V_S = ؎15V
1.0
1/f CORNER = 200Hz
0.1
10
100
1k
10k
FREQUENCY (Hz)
TPC 4. Current Noise Density
vs. Frequency
7
V_S = ؎15V
V_CM = 0V
6
5
4
3
2
–75 –50 –25 0 25 50 75
TEMPERATURE (؇C)
100 125
TPC 7. Input Bias Current vs.
Temperature
Typical Performance Characteristics–OP270
5
T_A = 25؇C
0.1Hz TO 10Hz NOISE
4
AT 10Hz
3
AT 1kHz
2
1
0
؎5
؎10
؎15
؎20
SUPPLY VOLTAGE (V)
TPC 2. Voltage Noise Density
vs. Supply Voltage
T_A = 25؇C
V_S = ؎15V
TIME (1sec/DIV)
TPC 3. 0.1 Hz to 10 Hz Input
Voltage Noise
40
V_S = ؎15V
30
20
10
0
–10
–20
–30
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE (؇C)
TPC 5. Input Offset Voltage vs.
Temperature
5
T_A = 25؇C
V_S = ؎15V
4
3
2
1
0
0
1
2
3
4
5
TIME (Minutes)
TPC 6. Warm-Up Offset Voltage
Drift
5
V_S = ؎15V
V_CM = 0V
4
3
2
1
0
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE (؇C)
TPC 8. Input Offset Current vs.
Temperature
7
T_A = 25؇C
V_S = ؎15V
6
5
4
3
2
–10.0 –5.0
0.0
5.0 10.0
–12.5 –7.5 –2.5 2.5
7.5 12.5
COMMON-MODE VOLTAGE (V)
TPC 9. Input Bias Current vs.
Common-Mode Voltage
REV. C
–5–