STMicroelectronics – High-side current-sense amplifier features integrated signal-conditioning amplifier

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STMicroelectronics’ TSC102 is a single-chip current-sense amplifier which incorporates an operational amplifier to boost its output signal to a level sufficient for an ADC to handle.

The device’s wide input common- mode voltage range, low quiescent current and 6.4mm x 3.0mm TSSOP8 package make it suitable for use in a wide variety of applications.

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 device’s input common- mode and power-supply voltages are independent. The common- mode voltage can range from 2.8V to 30V during operation.

Under extreme conditions, the device can withstand as much as 60V, enabling it to handle events such as load dumps. It can also cope with reverse battery conditions producing negative voltages as low as -16V.

The supply-voltage range is 3.5V to 5.5V, which means that the TSC102 can be supplied by the same regulator used by the system’s digital circuits.

FEATURES

  • <7μA input bias current in standard conditions
  • Operating-temperature range: -40°C to 125°C
  • 4kV ESD protection

APPLICATIONS

  • Battery chargers
  • Automotive current monitoring
  • DC motor control
  • Photo-voltaic systems
  • Precision current sources
  • Uninterruptible power supplies
  • High-end power supplies

The STEVAL-ISQ010V1 demonstration board is designed for the TSC102 device. It has an internally fixed gain of 20V/V. It draws a maximum supply current of just 450ΩA.

Orderable Part Number: STEVAL-ISQ010V1

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