Datasheet

AD8270
Rev. 0 | Page 12 of 20
210
180
150
120
90
60
30
0
–600 –400 –200 0 200 400 600
V
OSI
(µV)
NUMBER OF UNITS
06979-014
N: 1043
MEAN: 4.6
SD: 134.5
012345 678 910
TIME (s)
OFFSET (10µV/DIV)
06979-044
Figure 34. Typical Distribution of Op Amp Voltage Offset
Figure 37. Change in Op Amp Offset Voltage vs. Warm-Up Time
06979-028
50pA/DIV 1s/DIV
100
80
60
40
20
0
310 315 320 325 330 335 340
I
BIAS
(nA)
NUMBER OF UNITS
06979-020
N: 1043
MEAN: 321.6
SD: 6.9
Figure 38. 0.1 Hz to 10 Hz Current Noise of Internal Op Amp
Figure 35. Typical Distribution of Op Amp Bias Current
10
1
0.1
1 10 100 1k 10k 100k
FREQUENCY (Hz)
CURRENT NOISE (pA/√Hz)
06979-029
160
140
120
100
80
60
40
20
0
–9 –6 –3 0 3 6 9 12
I
OFFSET
(nA)
NUMBER OF UNITS
06979-027
N: 1043
MEAN: 0.31
SD: 2.59
Figure 39. Current Noise Spectral Density of Internal Op Amp
Figure 36. Typical Distribution of Op Amp Offset Current