TYPICAL PERFORMANCE CHARACTERISTICS
(cont'd)
TWO EXAMPLES OF EQUIVALENT INPUT OFFSET VOLTAGE DUE TO
CHANGE IN SUPPLY VOLTAGE vs. SUPPLY VOLTAGE
500
PSRR = 80 dB
400
EXAMPLE A:
V
OS
EPAD PROGRAMMED
AT V
SUPPLY
= +5V
EXAMPLE B:
V
OS
EPAD
PROGRAMMED
AT V
SUPPLY
= +8V
EQUIVALENT INPUT OFFSET VOLTAGE DUE TO
CHANGE IN SUPPLY VOLTAGE (µV)
300
200
100
0
0
1
2
3
4
5
6
7
8
9
10
SUPPLY VOLTAGE (V)
EQUIVALENT INPUT OFFSET VOLTAGE DUE TO
CHANGE IN COMMON MODE VOLTAGE (µV)
THREE EXAMPLES OF EQUIVALENT INPUT OFFSET VOLTAGE DUE TO
CHANGE IN COMMON MODE VOLTAGE vs. COMMON MODE VOLTAGE
500
V
SUPPLY
=
±5V
CMRR = 80dB
400
300
200
EXAMPLE B:
V
OS
EPAD
PROGRAMMED
AT V
IN
= -4.3V
EXAMPLE A:
V
OS
EPAD PROGRAMMED
AT V
IN
= 0V
100
0
-5
-4
-3
-2
-1
0
EXAMPLE C:
V
OS
EPAD PROGRAMMED
AT V
IN
= +5V
1
2
3
4
5
COMMON MODE VOLTAGE (V)
EQUIVALENT INPUT OFFSET VOLTAGE DUE TO
CHANGE IN COMMON MODE VOLTAGE (µV)
EXAMPLE OF MINIMIZING EQUIVALENT INPUT OFFSET VOLTAGE
FOR A COMMON MODE VOLTAGE RANGE OF 0.5V
50
COMMON MODE VOLTAGE RANGE OF 0.5V
40
30
V
OS
EPAD
PROGRAMMED
AT COMMON MODE
VOLTAGE OF 0.25V
20
CMRR = 80dB
10
0
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
COMMON MODE VOLTAGE (V)
ALD2722E/ALD2722
Advanced Linear Devices
9 of 13
ALD [ ADVANCED LINEAR DEVICES ]
