APPLICATION SPECIFIC / IN-SYSTEM PROGRAMMING
Examples of applications where accumulated total input offset voltage from various
contributing sources is minimized under different sets of user-specified operating conditions
2500
2000
1500
2500
2000
V
BUDGET AFTER
OS
1500
1000
500
0
EPAD PROGRAMMING
V
BUDGET AFTER
OS
1000
500
0
EPAD PROGRAMMING
+
X
-500
-500
+
X
-1000
-1000
V
BUDGET BEFORE
OS
-1500
-2000
-2500
-1500
-2000
-2500
EPAD PROGRAMMING
V
BUDGET BEFORE
OS
EPAD PROGRAMMING
EXAMPLE B
EXAMPLE A
2500
2000
1500
2500
2000
1500
V
OS
BUDGET AFTER
EPAD PROGRAMMING
V
BUDGET BEFORE
OS
1000
500
0
1000
500
0
EPAD PROGRAMMING
+
X
-500
-500
+
-1000
-1000
X
-1500
-2000
-2500
-1500
-2000
-2500
V
BUDGET AFTER
OS
V
BUDGET BEFORE
OS
EPAD PROGRAMMING
EPAD PROGRAMMING
EXAMPLE C
EXAMPLE D
Total Input V
after EPAD
Device input V
OS
OS
PSRR equivalent V
OS
Programming
+
CMRR equivalent V
OS
T
equivalent V
A
OS
X
Noise equivalent V
OS
External Error equivalent V
OS
ALD1721E/ALD1721
Advanced Linear Devices
9