Analogue, Mixed Signal, LSI


Current-sensing amplifier

26 May 2010 Analogue, Mixed Signal, LSI

STMicroelectronics’ TSC102 is a high-side current-sensing amplifier with low power consumption that is designed for direct connection to a small current-sensing resistor sitting at a voltage up to 30 V. This direct connection allows a system to be monitored without disturbing its ground connection, which is essential in applications such as automotive systems or for monitoring power supplies with multiple outputs. The device also has rugged inputs to survive applied voltages ranging from -16 V to 60 V. The TSC102 integrates two op-amps and provides full access to the pins of the second op-amp. This access allows designers to implement a variety of signal-conditioning functions such as gain adjustment to optimise the range of the output signal. The op-amp can also be configured as a comparator to implement over-current protection, or as a first- or second-order low-pass filter to promote stable sensing in systems where noise is present.



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