Datasheet

Typical Performance Characteristics–AD621
INPUT OFFSET VOLTAGE –
␮
V
50
40
0
–200 –100
PERCENTAGE OF UNITS
0 +100 +200
30
20
10
SAMPLE SIZE = 90
TPC 1. Typical Distribution of V
OS,
Gain = 10
INPUT OFFSET VOLTAGE –
␮
V
50
40
0
–80 –40
PERCENTAGE OF UNITS
0 +40 +80
30
20
10
SAMPLE SIZE = 90
TPC 2. Typical Distribution of V
OS
, Gain = 100
INPUT OFFSET CURRENT – pA
50
40
0
–400 –200
PERCENTAGE OF UNITS
0 +200 +400
30
20
10
SAMPLE SIZE = 90
TPC 3. Typical Distribution of Input Offset Current
REV. B
–5–
INPUT BIAS CURRENT – pA
50
40
0
–800 –400
PERCENTAGE OF UNITS
0 +400 +800
30
20
10
SAMPLE SIZE = 90
TPC 4. Typical Distribution of Input Bias Current
WARM-UP TIME – Minutes
2.0
0
051
CHANGE IN OFFSET VOLTAGE – ␮V
23
1.5
1.0
0.5
4
TPC 5. Change in Input Offset Voltage vs. Warm-Up Time
FREQUENCY – Hz
1000
100
1
1 100k10
VOLTAGE NOISE – nV/ Hz
100 1k 10k
10
GAIN = 10
GAIN = 100
TPC 6. Voltage Noise Spectral Density