Datasheet

AD8251
Rev. B | Page 9 of 24
0
6287-012
1s/DIV 1.25µV/DIV
Figure 12. 0.1 Hz to 10 Hz RTI Voltage Noise, G = 8
06287-013
18
0
1 100k
FREQUENCY (Hz)
NOISE (pA/Hz)
10 100 1k 10k
16
14
12
10
8
6
4
2
Figure 13. Current Noise Spectral Density vs. Frequency
0
6287-014
1s/DIV140pA/DIV
Figure 14. 0.1 Hz to 10 Hz Current Noise
150
130
110
90
50
70
10
10 1M
06287-016
FREQUENCY (Hz)
PSRR (dB)
100 1k 10k 100k
30
G = 1
G = 8
G = 2
G = 4
Figure 15. Positive PSRR vs. Frequency, RTI
150
110
130
90
70
30
10
50
10 1M
06287-017
FREQUENCY (Hz)
PSRR (dB)
100 1k 10k 100k
G=1
G=2
G=4
G=8
Figure 16. Negative PSRR vs. Frequency, RTI
10
9
8
7
6
5
4
3
2
1
0
0.01
10.1
CHANGE IN OFFSET VOLTAGE, RTI (µV)
10
WARM-UP TIME (minutes)
06287-117
Figure 17. Change in Offset Voltage, RTI vs. Warmup Time