LTC2050/LTC2050HV

12

2050fb

High Precision Three-Input Mux

Instrumentation Amplifier with 100V Common Mode Input Voltage

Low-Side Power Supply Current Sensing

–

+

1

3

4

5

SEL1

10k

1.1k

IN 1

–

+

1

3

4

5

SEL2

10k

10Ω

IN 2

–

+

1

3

4

5

SEL3

IN 3

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

5

2

1

3

4

5

2

OUTPUT OFFSET ≤3mV

FOR 0.1% RESISTORS, CMRR = 54dB

+

–

TYPICAL APPLICATIONS