OA1NP Datasheet, PDF (14/31 Pages) STMicroelectronics – Rail-to-rail input and output

Electrical characteristics
OA1NP, OA2NP, OA4NP
Figure 20. Output swing vs. input signal
frequency
4.0
3.5
3.0
2.5
2.0
Follower configuration
Vcc=3.3V, Vin=3.3Vpp
1.5
Vicm=Vrl=1.65V
Rl=10M, Cl=16pF
1.0
T=25°C
0.5
0.0
10
100
1000
Frequency (Hz)
10000
Figure 21. Triangulation of a sine wave
3
Follower configuration, Vin=3Vpp, F=1kHz
2
1
0
-1
-2
Vcc=3.3V, Vicm=Vrl=1.65V
Rl=10M, Cl=16pF, T=25°C
-3
0
1
2
3
4
Time (ms)
Figure 22. Large signal response at 3.3 V
supply voltage
2
Follower configuration, T=25°C
1
0
-1
Vcc=3.3V
Vicm=Vrl=1.65V
Rl=10M, Cl=16pF
-2
0 1 2 3 4 5 6 7 8 9 10
Time (ms)
Figure 23. Small signal response at 3.3 V supply
voltage
35
30
Follower configuration, T=25°C
25
20
15
10
5
0
-5
-10
-15
Vcc=3.3V
-20
Vicm=Vrl=1.65V
-25
Rl=10M, Cl=16pF
-30
-35
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Time (ms)
Figure 24. Overshoot vs. capacitive load at
3.3 V supply voltage
30
28
Vcc=3.3V, Vicm=Vrl=1.65V
25
Follower configuration
23
50mVpp step
Rl=10M, T=25°C
20
18
15
13
10
8
5
3
0
0
50
100
150
200
Capacitive load (pF)
Figure 25. Phase margin vs. capacitive load at
3.3 V supply voltage
70
65
60
55
50
45
40
35
30
25
Vcc=3.3V, Vicm=Vrl=1.65V
Gain 101 : Rg=10k, Rf=1M
20
Rl=10M
15
T=25°C
10
5
0
0
50
100
150
200
250
Capacitive load (pF)
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DocID025993 Rev 2