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
EPAD PROGRAMMED
OS
AT V
= +5V
SUPPLY
300
200
EXAMPLE B:
EPAD
V
OS
PROGRAMMED
AT V
= +8V
SUPPLY
100
0
0
1
2
3
4
5
6
7
8
9
10
SUPPLY VOLTAGE (V)
THREE EXAMPLES OF EQUIVALENT INPUT OFFSET VOLTAGE DUE TO
CHANGE IN COMMON MODE VOLTAGE vs. COMMON MODE VOLTAGE
500
400
V
= ±5V
SUPPLY
CMRR = 80dB
300
200
EXAMPLE B:
EPAD
EXAMPLE A:
V EPAD PROGRAMMED
V
OS
PROGRAMMED
OS
AT V = 0V
IN
AT V = -4.3V
IN
100
0
EXAMPLE C:
EPAD PROGRAMMED
V
OS
AT V = +5V
IN
-5
-4
-3
-1
0
1
2
3
4
5
-2
COMMON MODE VOLTAGE (V)
EXAMPLE OF MINIMIZING EQUIVALENT INPUT OFFSET VOLTAGE
FOR A COMMON MODE VOLTAGE RANGE OF 0.5V
50
40
COMMON MODE VOLTAGE RANGE OF 0.5V
30
20
V
EPAD
OS
PROGRAMMED
AT COMMON MODE
VOLTAGE OF 0.25V
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)
ALD1722E
Advanced Linear Devices
9 of 13
ALD [ ADVANCED LINEAR DEVICES ]
