OA1NP Datasheet, PDF (16/31 Pages) STMicroelectronics – Rail-to-rail input and output

Electrical characteristics
Figure 32. Noise at 1.8 V supply voltage in
follower configuration
10000
1000
Vcc=1.8V
Follower configuration
T=25°C
Vicm=0.9V
OA1NP, OA2NP, OA4NP
Figure 33. Noise at 3.3 V supply voltage in
follower configuration
10000
1000
Vicm=1.65V
Vcc=3.3V
Follower configuration
T=25°C
100
Vicm=1.5V
100
Vicm=3V
10
10
100
1000
10000
Frequency (Hz)
100000
10
10
100
1000
10000
Frequency (Hz)
100000
Figure 34. Noise at 5 V supply voltage in
follower configuration
10000
1000
Vcc=5V
Follower configuration
T=25°C
Vicm=2.5V
100
Vicm=4.7V
10
10
100
1000
10000
Frequency (Hz)
100000
Figure 36. Channel separation on OA2NP
140
120
100
80
60
40
V =5V
cc
V =2.5V
icm
V =2Vpp
20
in
T=25°C
0
10
100
1k
10k
Frequency (Hz)
Figure 35. Noise amplitude on 0.1 to 10 Hz
frequency range
20
15
10
5
0
-5
-10
Vcc=3V, Vicm=1.65V
Bandpass filter : 0.1Hz to 10Hz
-15
T=25°C
-20
0 1 2 3 4 5 6 7 8 9 10
Time (s)
Figure 37. Channel separation on OA4NP
140
120
Ch1 - Ch2
Ch1 - Ch3
Ch1 - Ch4
100
80
60
40
V =5V
cc
V =2.5V
icm
V =2Vpp
20
in
T=25°C
0
10
100
1k
10k
Frequency (Hz)
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