OP191/OP291/OP491–Typical Performance Characteristics
180
V
S
= +3V
160 T = +25°C
A
BASED ON 1200
140 OP AMPS
120
UNITS
100
80
60
40
20
120
100
0
INPUT OFFSET VOLTAGE – mV
V
S
= +3V
–40°C < T
A
< +125°C
BASED ON 600 OP AMPS
V
S
= +3V
–0.02
–0.04
V
CM
= 0V
–0.06
V
CM
= 3V
–0.08
–0.1
V
CM
= 2.9V
–0.12
–0.14
V
CM
= 0.1V
80
UNITS
60
40
20
0
–0.18
0
0.14
–0.10
–0.02
0.06
INPUT OFFSET VOLTAGE – mV
0.22
0
1
2
3
4
5
6
INPUT OFFSET VOLTAGE – µV/
°C
7
–40
85
25
TEMPERATURE –
°C
125
Figure 2. OP291 Input Offset Voltage
Distribution, V
S
= +3 V
Figure 3. OP291 Input Offset Volt-
age Drift Distribution, V
S
= +3 V
0
Figure 4. Input Offset Voltage vs.
Temperature, V
S
= +3 V
40
30
36
30
V
S
= +3V
V
CM
= 3V
–0.2
INPUT OFFSET CURRENT – nA
INPUT BIAS CURRENT – nA
10
0
–10
–20
–30
–40
–50
–60
–40
V
S
= +3V
V
CM
= 2.9V
–0.4
–0.6
INPUT BIAS CURRENT – nA
125
20
V
S
= +3V
V
CM
= 0.1V
V
CM
= 2.9V
V
CM
= 3V
24
18
12
6
0
–6
–12
–18
–24
–30
–36
–0.8
V
CM
= 0V
–1.0
–1.2
–1.4
–1.6
–1.8
–40
V
CM
= 0.1V
V
CM
= 0V
25
85
TEMPERATURE –
°C
125
25
85
TEMPERATURE –
°C
0 0.30 0.60 0.90 1.2 1.5 1.8 2.1 2.4 2.7 3.0
INPUT COMMON MODE VOLTAGE – Volts
Figure 5. Input Bias Current vs.
Temperature, V
S
= +3 V
Figure 6. Input Offset Current
vs. Temperature, V
S
= +3 V
Figure 7. Input Bias Current vs.
Common-Mode Voltage, V
S
= +3 V
3.00
+V
O
@ R
L
= 100k
2.95
OUTPUT SWING – Volts
OPEN-LOOP GAIN – dB
160
140
120
100
80
60
40
20
0
0
45
90
135
180
225
1k
10k
100k
1M
FREQUENCY – Hz
270
10M
V
S
= +3V
T
A
= +25°C
1200
R
L
= 100kΩ,
V
CM
= 2.9V
R
L
= 100kΩ,
V
CM
= 0.1V
1000
OPEN-LOOP GAIN –V/mV
PHASE SHIFT – Degrees
800
2.90
+V
O
@ R
L
= 2k
2.85
600
400
2.80
V
S
= +3V
2.75
–40
200
V
S
= 3V, V
O
= 0.3V / 2.7V
0
–40
25
85
TEMPERATURE –
°C
125
–20
–40
100
25
85
TEMPERATURE –
°C
125
Figure 8. Output Voltage Swing
vs. Temperature, V
S
= +3 V
Figure 9. Open-Loop Gain & Phase
vs. Frequency, V
S
= +3 V
Figure 10. Open-Loop Gain vs.
Temperature, V
S
= +3 V
–6–
REV. 0
AD [ ANALOG DEVICES ]
