Precision, High-Voltage Bi-directional Current-Sense Amplifiers from STMicroelectronics Boost Robustness and Power Efficiency

STMicroelectronics TSC2010 TSC2011 TSC2012

STMicroelectronics has introduced three precision high-voltage bi-directional current-sense amplifiers that provide the extra convenience of a Shutdown pin to maximize energy savings.

STMicroelectronics - TSC2010, TSC2011, TSC2012

The TSC2010, TSC2011, and TSC2012 amplifiers also allow designers to minimize power dissipation by leveraging their precision characteristics to select low sense-resistor values. The offset voltage is within ±200 µV at 25 °C, with less than 5 µV/°C drift, and gain accuracy is within 0.3%, enabling the devices to detect a voltage drop as low as 10 mV full-scale to provide consistent and trusted measurements.

The gain variety – 20 V/V for the TSC2010, 60 V/V for the TSC2011, and 100 V/V for the TSC2012 – gives flexibility to build precision current measurement, overcurrent protection, current monitoring, and current-feedback circuits for many different industrial and automotive systems. Uses include data acquisition, motor control, solenoid control, instrumentation, test and measurement, and process control.

With their bi-directional capability, the three new amplifiers help designers trim their bill of materials by allowing a single sensing circuit to measure current flowing in forward and reverse directions. The devices are also suitable for high-side and low-side connection, enabling the same part number to be used in both configurations for easier inventory management.

All the new devices have a wide supply voltage range, from 2.7 V to 5.5 V, adding further to their flexibility. Their wide input-voltage tolerance allows sensing over a range of common-mode voltages from –20 V to 70 V at any supply voltage. With high gain-bandwidth product and fast slew rate – 820 kHz and 7.5 V/µs in the TSC2010 – they ensure high accuracy and fast response.

The devices feature an integrated EMI filter and 2 kV HBM (Human Body Model) ESD tolerance, ensuring robust performance, and operate over the industrial temperature range –40 °C to 125 °C.

Designers can accelerate time to market by taking advantage of the accompanying STEVAL-AETKT1V2 evaluation kit for a fast start to projects using any of the three devices.

The STEVAL-AETKT1V2 evaluation kit
The STEVAL-AETKT1V2 evaluation kit.

The TSC2010, TSC2011, and TSC2012 are available now in Mini-SO8 and SO8 packages, priced from $0.90 for orders of 1000 pieces. Automotive-grade devices are priced from $1.08 for orders of 1000 pieces.

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