Datasheet

LTC2050/LTC2050HV
12
2050fc
High Precision 3-Input Mux
Instrumentation Amplifi er with 100V Common Mode Input Voltage
Low Side Power Supply Current Sensing
–
+
1
3
4
5
SEL1
10k1.1k
IN 1
A
V
= 10
–
+
1
3
4
5
SEL2
10k
10Ω
IN 2
A
V
= 1000
–
+
1
3
4
5
SEL3
IN 3
A
V
= 1
LTC2050
LTC2050
LTC2050
OUT
SELECT INPUTS ARE CMOS LOGIC COMPATIBLE
2050 TA07
SHDN
SHDN
SHDN
–
+
LTC2050HV
1
4
3
2050 TA08
5
2
5V
–5V
TO
MEASURED
CIRCUIT
OUT
3V/AMP
LOAD CURRENT
IN MEASURED
CIRCUIT, REFERRED
TO –5V
10Ω 10k
3mΩ
0.1μF
LOAD CURRENT
–
+
LTC2050HV
–
+
LTC2050HV
1M
1M
1
3
4
2050 TA06
1k 1M
1k
1k
V
OUT
5
2
1
3
4
5
2
V
+
V
–
V
+
V
–
OUTPUT OFFSET ≤3mV
FOR 0.1% RESISTORS, CMRR = 54dB
+
–
V
IN
TYPICAL APPLICATIONS