OP297 Datasheet, PDF (5/16 Pages) Analog Devices – Dual Low Bias Current Precision Operational Amplifier

8/21/97 4:00 PM
Typical Performance Characteristics–OP297
400
1200 UNITS
300
200
100
T_A = +25°C
V_S = ±15V
V_CM = 0V
250
1200
UNITS
200
150
100
50
T_A = +25°C
V_S = ±15V
V_CM = 0V
400
1200 UNITS
300
200
100
T_A = +25°C
V_S = ±15V
V_CM = 0V
0
–100 –80 –60 –40 –20 0 20 40 60 80 100
INPUT OFFSET VOLTAGE (µV)
Figure 4. Typical Distribution of Input
Offset Voltage
0
–100 –80 –60 –40 –20 0 20 40 60 80 100
INPUT BIAS CURRENT (pA)
Figure 5. Typical Distribution of Input
Bias Current
0
–100 –80 –60 –40 –20 0 20 40 60 80 100
INPUT OFFSET CURRENT (pA)
Figure 6. Typical Distribution of In-
put Offset Current
60
I_B–
40
I_B+
20
V_S = ±15V
V_CM = 0V
0
20
I_OS
–40
–60
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
Figure 7. Input Bias, Offset Current
vs. Temperature
60
T_A = +25°C
40 ^{VS = ±15V}
I_B–
20
I_B+
0
I_OS
–20
–40
–60
–15 –10 –5
0
5 10 15
COMMON-MODE VOLTAGE (VOLTS)
Figure 8. Input Bias, Offset Current
vs. Common-Mode Voltage
±3
T_A = +25°C
V_S = ±15V
V_CM = 0V
±2
±1
0
0
1
2
3
4
5
TIME AFTER POWER APPLIED (MINUTES)
Figure 9. Input Offset Voltage Warm-
Up Drift
10000
BALANCED OR UNBALANCED
V_S = ±15V
V_CM = 0V
1000
100
–55°C ≤ T_A ≤ 125°C
T_A = +25°C
10
10 100 1k 10k 100k 1M 10M
SOURCE RESISTANCE (Ω)
Figure 10. Effective Offset Voltage
vs. Source Resistance
100
BALANCED OR UNBALANCED
V_S = ±15V
V_CM = 0V
10
1
0.1
100
1k 10k 100k 1M 10M 100M
SOURCE RESISTANCE (Ω)
35
30
T_A = –55°C
25
20
T_A = +25°C
15
10
T_A = +125°C
5 V_S = ±15V
0 OUTPUT SHORTED
–5 ^{TO GROUND}
–10
–15
T_A = +125°C
–20
T_A = +25°C
–25
–30
T_A = –55°C
–35 ₀
1
2
3
4
TIME FROM OUTPUT SHORT (MINUTES)
Figure 11. Effective TCV_OS vs. Source
Resistance
Figure 12. Short Circuit Current vs.
Time, Temperature
REV. D
–5–