Datasheet

8
LT1222
1222fc
TYPICAL APPLICATIONS N
U
V
OS
Null Loop
LT1222 • TA03
IN
V
100pF
LT1222
10k
100pF
+
LT1097
–
+
10k
V
OUT
A
V
= 1001
25k
25Ω
150k
1
8
150k
Two Op Amp Instrumemtation Amplifier
+
–
–
+
LT1220
GAIN = [R4/R3][1 + (1/2)(R2/R1 + R3/R4) + (R2 + R3)/R5] = 102
TRIM R5 FOR GAIN
TRIM R1 FOR COMMON MODE REJECTION
BW = 3MHz
V
IN
V
OUT
–
+
LT1222
LT1222 • TA04
R3
1k
R5
220Ω
R4
10k
R2
1k
R1
10k
SI PLIFIED SCHE ATIC
WW
6 OUT
LT1222 • SS
BIAS 2
COMP
BIAS 1
18
5
NULL
–IN
+IN 3
V
–
7V
+
2
4