20
LT1213/LT1214
U
SA
O
PP
L
IC
AT
ITY
P
I
CA
L
COMMON MODE VOLTAGE (V)
0.01
EACH INPUT BIAS CURRENT (nA)
100
80
60
40
20
0
0.1 1 10
1213/14 TA03b
V
+
= 5V
Input Bias Current vs
Common Mode Voltage
Instrumentation Amplifier with Guard/Shield Driver and Input Bias Current Cancellation
Ground Current Sense Amplifier
Difference Amplifier with Wide Input Common Mode Range
1M
R
F
1020Ω
V
+
–
+
1/4
LT1214
A
–
+
22pF
INPUTS
–
+
OUTPUT
–
+
1/4
LT1214
D
5000pF
1k
R
G
113Ω
1/4
LT1214
B
1M*
1M
–
+
1/4
LT1214
C
200Ω
R
F
1020Ω
10k**
1k 10k
R
G
113Ω
GUARD
GUARD
1213/14 TA03a
COMMON MODE R
IN
= 3G
DIFFERENTIAL R
IN
= 2M
BANDWIDTH = 2MHz
t
r
= 170ns
GAIN = 10 1 + = 100
R
F
R
G
()
*
**
TRIM FOR INPUT BIAS CURRENT
TRIM FOR CMRR
0.1µF
1k
V
+
3.3V
–
+
1/2
LT1213
LT1004-1.2
10k
+IN
750Ω
0.1µF
GAIN = 1; V
OUT
= V
REF
FOR V
IN(DIF)
= 0
±10V COMMON MODE RANGE
BANDWIDTH = 3MHz
1k10k
1.2V
10k
10k
–IN
V
OUT
V
REF
1213/14 TA05
–
+
5V
1/2
LT1213
I
IN
1213/14 TA04
V
O
= 1V/A
100Ω
V
+
1910Ω
100pF
LOAD
0.05Ω
OFFSET ≤ 5.5mA
BANDWIDTH = 500kHz
t
r
= 1µs
0.1µF
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
12134fa LT/CP 1001 1.5K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1993
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1211/LT1212 14MHz, 7V/µs Single Supply Dual and Quad Precision Op Amps Half the Supply Current of the LT1213
LT1215/LT1216 23MHz, 50V/µs Single Supply Dual and Quad Precision Op Amps Four Times the Slew Rate of the LT1213
LT1630/LT1631 30MHz, 10V/µs Dual and Quad Rail-to-Rail Rail-to-Rail LT1213
Input and Output Precision Op Amps
