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TSC103

Application schematic and pin description

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Application schematic and pin description

The TSC103 high-side current sense amplifier can be used in either single- or dual-supply

mode. In the single-supply configuration, the TSC103 features a wide 2.9 V to 70 V input

common-mode range totally independent of the supply voltage. In the dual-supply range,

the common-mode range is shifted by the value of the negative voltage applied on the Vcc-

pin. For instance, with Vcc+ = 5 V and Vcc- = -5 V, then the input common-mode range is

-2.1 V to 65 V.

Figure 1. Single-supply configuration schematic

AM04517

5 V

Vsense

Iload

Rsense

Common-mode voltage: 2.9 V to 70 V

Vp

Vm

Rg1

Rg2

Vcc+

Vcc

SEL1

Vout

Iload

Rsense

Rg3

Vp

Vm

Out

Rg1

Rg2

Voltage

buffer

Sense

amplifier

Vcc+

TSC103

Gnd

Vcc-

K2

µ Controller

ADC

Vcc

GPIO2

Gnd

SEL1

SEL2

GPIO1