SH 6kV Shunt Current Sensing Isolated Amplifier IC

SunYuan SH Series ADC Sampling Differential Signal Isolation Amplifier IC is an enhanced isolated amplifier with a built-in three-port isolated DC/DC power supply, specially designed for 6kV isolated shunt differential current sensing in industrial control systems.The SH Series integrates selectable gain configuration, differential analog signal input, and single-ended analog voltage output, supporting common full differential input signals such as ±50mV and ±250mV.The primary function of the SH Series ADC sampling differential signal isolation amplifier is to accurately amplify the weak millivolt-level voltage signals generated by current shunts in high-voltage or ground potential difference environments, and safely transmit the amplified signals to low-voltage data acquisition systems through electrical isolation.By providing reinforced isolation, the device effectively blocks high common-mode voltage interference, prevents damage caused by high-voltage transients, and eliminates ground loop noise, ensuring reliable and high-precision current measurement in demanding industrial applications.

The SunYuan SH Series Isolation Amplifier integrates an independent isolated power supply, high-precision differential operational amplifier, and capacitor-enhanced isolation barrier, providing a complete high-performance solution for precision DC current sensing and ADC signal isolation applications.With a single DC power supply, the SH Series can directly measure the small differential voltage generated across the shunt resistor in control systems and output a standard analog voltage signal, without requiring external isolated power supplies, additional operational amplifiers, or potentiometer-based signal conditioning circuits.The device provides complete three-port electrical isolation between the low-voltage power supply side, high-voltage sensing side, and signal output side. This advanced isolation structure effectively eliminates common-mode interference, ground loop noise, and high-voltage coupling issues in demanding applications such as industrial DC buses, power battery systems, and high-voltage variable frequency drives.The SH Series is a cost-effective, highly reliable, and high-precision isolated DC current measurement solution, designed as an ideal alternative to conventional non-isolated operational amplifiers, external isolation modules, and Hall-effect current sensors.The integrated 6kV high-isolation DC/DC distributed power supply allows the device to operate from a single low-voltage supply, eliminating the need for an additional isolated power supply on the high-voltage sensing side. This significantly simplifies circuit design, reduces component count, and minimizes PCB space requirements.Featuring low input offset voltage, low gain drift, and excellent temperature stability, the SH Series maintains high measurement accuracy across the entire industrial temperature range. Its high Common-Mode Transient Immunity (CMTI) ensures accurate and reliable current measurement even in high-power switching environments, such as power converters and motor control systems.

The SH Series Isolation Amplifier provides flexible installation options with both PCB mounting and DIN35 rail mounting designs. The DIN rail version supports multiple channel configurations, including 1-in/1-out, 1-in/2-out, and 2-in/2-out, enabling reliable signal isolation, distribution, and amplification for industrial current monitoring systems.With excellent environmental durability against humidity, vibration, and temperature extremes (-40°C to +85°C), the SH Series delivers stable performance in demanding industrial environments.It is widely deployed in motor control, power conversion, energy storage, EV charging, renewable energy, industrial automation, communication power, and new energy vehicle systems