AD8270 Analog Devices, AD8270 Datasheet - Page 12

• Manufacturer Part Number: AD8270
• Description: Precision Dual-Channel, Difference Amplifier
• Manufacturer: Analog Devices

AD8270
160
140
120
100
210
180
150
120
100
80
60
40
20
90
60
30
80
60
40
20
0
0
0
Figure 34. Typical Distribution of Op Amp Voltage Offset
Figure 36. Typical Distribution of Op Amp Offset Current
Figure 35. Typical Distribution of Op Amp Bias Current
–9
–600
310
–6
–400
315
–3
320
–200
I
OFFSET
0
I
V
BIAS
OSI
325
0
(µV)
(nA)
(nA)
3
330
200
6
335
400
N: 1043
MEAN: 321.6
SD: 6.9
N: 1043
MEAN: 0.31
SD: 2.59
N: 1043
MEAN: 4.6
SD: 134.5
9
340
600
12
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Figure 37. Change in Op Amp Offset Voltage vs. Warm-Up Time
0.1
10
Figure 39. Current Noise Spectral Density of Internal Op Amp
Figure 38. 0.1 Hz to 10 Hz Current Noise of Internal Op Amp
1
0
50pA/DIV
1
1
2
10
3
FREQUENCY (Hz)
100
4
TIME (s)
5
6
1k
7
10k
8
1s/DIV
9
100k
10