STMicroelectronics TSC101, TSC102, and TSC103 amplifier

The TSC10x high-side current sense amplifiers measure a small differential voltage on a high-side shunt resistor and translate it into a ground-referenced output voltage.
Wide input common-mode voltage range, low quiescent current, and tiny SOT23 or TSSOP8 packaging enable use in a wide variety of applications.

The common-mode voltage can range from 2.8 to 30 V in operating conditions and up to 60 V in absolute maximum rating conditions (or from 2.9 to 70 V in the single-supply configuration for the TSC103).

Current consumption is below 300 µA for TSC101 and TSC1021, lower than 420 µA for TSC102, and lower than 360 µA for TSC103 and TSC1031.

Key features

• Independent supply and input common-mode voltages
• Wide common-mode operating range: -2.1 to 70 V depending on part
• Wide common-mode survival range: -32 to 75 V (load-dump) depending on part
• Low current consumption: ICC_MAX = 300 µA

Additional features

• TSC101:
  • Independent supply and input common-mode voltages
  • Wide common-mode operating range: 2.8 to 30 V
  • Wide common-mode surviving range: -0.3 to 60 V (load-dump)
  • Wide supply voltage range: 4 to 24 V
  • Low current consumption: ICC max = 300 µA
  • Internally fixed gain: 20 V/V, 50 V/V, or 100 V/V
  • Buffered output
• TSC102 and TSC1021:
  • Wide common-mode operating range: 2.8 to 30 V
  • Wide common-mode surviving range: -16 to 60 V (TSC102) and -32 V to 60 V (TSC1021), reversed battery and load-dump conditions
  • Low current consumption: ICC max = 420 µA for TSC102 and 300 µA for TSC1021 
  • -40 °C to 125 °C operating temperature range
  • 4 kV ESD protection (TSC102)
  • Internally fixed gain: 20 V/V, 50 V/V for TSC1021
  • EMI filtering (TSC1021)
• TSC103 and TSC1031:
  • Independent supply and input common-mode voltages
  • Wide common-mode operating range: 2.9 V to 70 V in single-supply configuration, -2.1 V to 65 V in dual-supply configuration
  • Wide common-mode surviving range: -16 V 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: 20 V/V (TSC103), 25 V/V (TSC103), 50 V/V, or 100 V/V 
  • Buffered output
  • EMI filtering (TSC1031)

Applications

• Automotive current monitoring
• Notebook computers
• DC motor controls
• Photovoltaic systems
• Battery chargers
• Precision current sources

Available tools

 

STEVAL-ISQ007V1:

High-side current-sense amplifier demonstration board based on the TSC101

This demonstration board is specifically designed for the TSC101 integrated circuit. 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.

DATASHEET

 

STEVAL-ISQ010V1:

High-side current-sense amplifier demonstration board based on the TSC102

The STEVAL-ISQ010V1 demonstration board is specifically designed for the TSC102 device. The TSC102 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. The device is housed in a tiny TSSOP8 package.

DATASHEET