DocID025993 Rev 2

15/31

OA1NP, OA2NP, OA4NP

Electrical characteristics

31

Figure 26. Bode diagram for different feedback

values

Figure 27. Bode diagram at 1.8 V supply voltage

10

100

1000

10000

-20

-15

-10

-5

0

5

10

15

20

Frequency (Hz)

Feedback : 1M//47pF

Feedback : 1M

Vcc=3.3V, Vicm=1.65V, T=25°C

Gain=1

Rl=10M, Cl=16pF, Vrl=Vcc/2

Feedback : 100k

10

100

1000

10000

-45

-30

-15

0

15

30

45

-180

-150

-120

-90

-60

-30

0

30

60

90

120

150

180

Frequency (Hz)

Phase

Gain

Vcc=1.8V, Vicm=0.9V

G=101 (10k/1M)

Rl=10M, Cl=60pF, Vrl=Vcc/2

T=85°C

T=-40°C

T=25°C

Figure 28. Bode diagram at 3.3 V supply voltage Figure 29. Bode diagram at 5 V supply voltage

10

100

1000

10000

-45

-30

-15

0

15

30

45

-180

-150

-120

-90

-60

-30

0

30

60

90

120

150

180

Frequency (Hz)

Phase

Gain

Vcc=3.3V, Vicm=1.65V

G=101 (10k/1M)

Rl=10M, Cl=60pF, Vrl=Vcc/2

T=85°C

T=-40°C

T=25°C

10

100

1000

10000

-45

-30

-15

0

15

30

45

-180

-150

-120

-90

-60

-30

0

30

60

90

120

150

180

Frequency (Hz)

Phase

Gain

Vcc=5V, Vicm=2.5V

G=101 (10k/1M)

Rl=10M, Cl=60pF, Vrl=Vcc/2

T=85°C

T=-40°C

T=25°C

Figure 30. Gain bandwidth product vs. input

common mode voltage

Figure 31. Gain vs. input common mode voltage

0.0

0.0

0.5

0.5

1.0

1.0

1.5

1.5

2.0

2.0

2.5

2.5

3.0

3.0

0

0

1

2

2

3

4

4

5

6

6

7

8

8

9

10

10

Vcc=3.3V, Vicm=Vrl

T=25°C

Measured at 20dB

Vicm (V)

10

-2

10

-1

10

0

10

1

10

2

10

3

10

100

Recommended resistor to

place between the output

of the op-amp and the

capacitive load

Vcc=3.3V, Vicm=1.65V

Follower configuration

Capacitive load (nF)