Accurate measurement with high-performance current sense amplifiers

Sensing the current flow is fundamental in many systems such as motor control, battery management systems, and wireless infrastructure.

ST’s current sense amplifiers measure small voltage drops across shunt resistors with minimal error and offer excellent performance in many industrial and automotive applications. ST proposes a wide variety of current sensing able to measure the current either in bidirectional mode, or in unidirectional mode, but also able to address over-current protection features. ST’s current sense amplifiers offer the advantages of wide input common-mode voltage for high-side and in-line current sensing, and a cost-effective solution for low-side measurement.

ST's current sense amplifier IC portfolio offers a large variety of high-performance devices:

• High-voltage current sense amplifier: the TSC2020 can sense current via a shunt resistor over a wide range of common-mode voltages, from -4 to +100 V, to address a variety of voltage rails.
• Current sense amplifier with open-drain comparator and reference: the TSC200/201/202 integrates an open-drain comparator with output latch function and an internal 0.6 V voltage reference connected to its input.
• Current sense amplifiers with extended temperature: the TSC2010/2011/2012 are available in both industrial and extended temperature range.
• Current sense amplifiers based on zero-drift architecture: the TSC210/211/212/213/214/215 can sense current via a shunt resistor over a wide range of common-mode voltages from -0.3 to +26 V, whatever the supply voltage is.