About the TSC101

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About the TSC101

The TSC101 measures a very small voltage drop on a high-side shunt resistor, and, using

an internally fixed gain, amplifies the difference into a ground-referenced output voltage. The

amplification gain is internally fixed and the device is housed in a tiny SOT23-5 package.

Input common-mode and power supply voltages are independent. The common-mode

voltage can range from 2.8 V to 30 V in operating conditions, and up to 60 V in absolute

maximum ratings. The supply voltage can range from 4 V to 24 V giving you the possibility

to connect the power supply pin to either side of the shunt resistor in most cases.

Most of the TSC101 parameters are guaranteed over the full operating temperature range

from -40° C to 125° C.

Current consumption of less than 300 µA over the temperature range and low input bias

particularly interesting to save power in the application.

The TSC101 key features are:

●

Independent supply and input common-mode voltages

●

Wide common-mode operating range: 2.8 V to 30 V

●

Wide common-mode surviving range: -0.3 V to 60 V (load-dump)

●

Wide supply voltage range: 4 V to 24 V

●

●

Internally fixed gain: 20 V/V (TSC101A), 50 V/V (TSC101B) or 100 V/V (TSC101C)

●

Buffered output

For more detailed information about the TSC101, refer to the datasheet.

Figure 2.

Typical application for the TSC101

5V

load

battery or power

source

2.8V to 30V

Microcontroller

ADC

Gnd

4

3

1

2

Vp

Vm

Out

Gnd

5

Vcc

TSC101

Current Sensing

Amplifier