50
SAMPLE SIZE = 90
40
Typical Performance Characteristics–AD621
50
SAMPLE SIZE = 90
40
30
30
20
20
10
10
0
–200
–100
0
+100
INPUT OFFSET VOLTAGE – V
+200
TPC 1. Typical Distribution of VOS, Gain = 10
0
–800
–400
0
+400
INPUT BIAS CURRENT – pA
+800
TPC 4. Typical Distribution of Input Bias Current
50
SAMPLE SIZE = 90
40
30
20
10
0
–80
–40
0
+40
+80
INPUT OFFSET VOLTAGE – V
TPC 2. Typical Distribution of VOS, Gain = 100
2.0
1.5
1.0
0.5
0
0
1
2
3
4
5
WARM-UP TIME – Minutes
TPC 5. Change in Input Offset Voltage vs. Warm-Up Time
50
SAMPLE SIZE = 90
40
30
20
10
0
–400
–200
0
+200
INPUT OFFSET CURRENT – pA
+400
TPC 3. Typical Distribution of Input Offset Current
1000
100
GAIN = 10
10
GAIN = 100
1
1
10
100
1k
10k
100k
FREQUENCY – Hz
TPC 6. Voltage Noise Spectral Density
REV. B
–5–