STMicroelectronics 1100uV Current Sense Amplifiers TSC1031IDT

TSC1031IDT 100% Original Current Sense Amplifiers High-Voltage Amp 2.7 to 5.5 V Single

1.Features
 Independent supply and input common-mode
voltages
 Wide common-mode operating range:
2.9 to 70 V in single-supply configuration
-2.1 to 65 V in dual-supply configuration
 Wide common-mode surviving range:
-16 to 75 V (reversed battery and load-dump
conditions)
 Supply voltage range:
2.7 to 5.5 V in single supply configuration

Low current consumption: ICC max = 360 μA
 Pin selectable gain: 50 V/V or 100 V/V
 Buffered output
 EMI filtering
2. Applications
 Automotive current monitoring
 DC motor control
 Photovoltaic systems
 Battery chargers
 Precision current sources
 Current monitoring of notebook computers
 Uninterruptible power supplies
 High-end power supplies

3. Description
The TSC1031 measures a small differential
voltage on a high-side shunt resistor and
translates it into a ground-referenced output
voltage. The TSC1031’s dedicated schematic
eases the implementation of EMI filtering in harsh
environments. The gain is adjustable to 50 V/V or
100 V/V by a selection pin.
Wide input common-mode voltage range, low
quiescent current, and tiny TSSOP8 packaging
enable use in a wide variety of applications.
The input common-mode and power supply
voltages are independent. The common-mode
voltage can range from 2.9 to 70 V in the singlesupply
configuration or be offset by an adjustable
voltage supplied on the Vcc- pin in the dualsupply
configuration.
With a current consumption lower than 360 μA
and a virtually null input leakage current in
standby mode, the power consumption in the
applications is minimized.

4.

Application schematic and pin description
The TSC1031 high-side current sense amplifier can be used in either single- or dual-supply
mode. In the single-supply configuration, the TSC1031 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 Vccpin.
For instance, with Vcc+ = 5 V and Vcc- = -5 V, then the input common-mode range is
-2.1 V to 65 V.

5.

6.

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STMicroelectronics 1100uV Current Sense Amplifiers TSC1031IDT Images