H2AR3 is an AC current and voltage sensor module based on bi-directional current sense amplifiers INA199B2DCKT, INA199B1DCKT, Low-Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference REF2033AIDDCR and STM32F0 MCU.
- The voltage-output, current-shunt monitors (also called current-sense amplifiers) are commonly used for overcurrent protection, precision-current measurement for system optimization, or in closed-loop feedback circuits.
- These devices operate from a single 2.7-V to 26-V power supply, drawing a maximum of 100 µA of supply current. All versions are specified from –40 °C to 125 °C, and offered in both SC70-6 and thin UQFN-10 packages.
- Applications with only a positive supply voltage often require additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF2033AIDDCR provides a reference voltage (VREF) for the ADC and a second highly-accurate voltage (VBIAS) that can be used to bias the input bipolar signals.