Current-sense amplifiers (also called current shunt amplifiers) are special purpose operational amplifiers (op amps) that integrate external components and output a voltage proportional to the current flowing in a power rail. They utilize a "sense resistor" to convert the load current in the power rail to a small voltage, which is then amplified by the current sense amplifier. Renesas offers unidirectional high-side and low-side current sense amplifiers.

Renesas has both analog output current sense amplifiers and digital output digital power monitors (DPMs).  

Featured Products

Product Description
ISL28006 Micropower, Rail to Rail Input Current Sense Amplifier with Voltage Output
ISL28022 Precision Digital Power Monitor


Title language Type Format File Size Date
Application Notes & White Papers
AN1993: Voltage Feedback versus Current Feedback Operational Amplifiers Application Note PDF 564 KB
AN1694: The Four Basic Building Blocks of an Op Amp Application Note PDF 357 KB
AN1827: High-Side, High Current Sensing Techniques Application Note PDF 419 KB
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB
TB514: Operational Amplifier Basics Other PDF 519 KB