NSI1300D25-DSWVR

Overview

The NSI1300D25-DSWVR is a high-reliability reinforced isolated amplifier from NOVOSENSE, utilizing proprietary capacitive isolation technology to separate input and output circuits. It features a linear differential input signal range of ±250mV (full scale ±320mV), making it suitable for shunt-based current sensing in high-voltage applications. The device provides a fixed gain of 8.2 with a differential analog output. Key electrical specifications include a bandwidth of 310kHz (-3dB), an input offset voltage of 10μV, and an input bias current of 18μA. It supports dual supply voltages of 3V to 5.5V on both sides and operates within a temperature range of -40°C to +125°C.

Feature Summary

• High common-mode transient immunity of 150kV/us ensures accurate measurement during high-power switching operations.
• Integrated system-level diagnostic functions including VDD1 missing detection and input common-mode overvoltage detection.
• Low offset error and drift characteristics maintain precision across the entire operating temperature range.
• Reinforced insulation voltage capability up to 5000Vrms for enhanced safety in isolated systems.

Applications

• Current sensing based on shunt resistors in high-voltage isolated environments
• Motor control applications requiring reliable measurements during power switching
• Industrial automation data acquisition systems

Procurement Notes

Verify the specific suffix D25 corresponds to the required gain of 8.2 and input range of ±250mV. Confirm the package variant matches SOIC-8-300mil requirements. Ensure compatibility with the 3V-5.5V dual-supply configuration. Check for RoHS compliance and relevant safety certifications such as UL1577 or VDE if required by the target application standards.

Selection Notes

Select this component when a fixed gain of 8.2 is needed for ±250mV differential inputs. It is appropriate for designs requiring high CMTI and integrated fault diagnostics. Consider alternatives like the NSI1300D05 if a gain of 41 and ±50mV input range are preferred. Ensure the application benefits from the low offset voltage and wide bandwidth provided by this specific model.

Part Context

This part belongs to the NSI1300 series of high-reliability reinforced isolated amplifiers manufactured by NOVOSENSE. The series leverages capacitive isolation technology to provide galvanic separation between input and output stages. The D25 designation specifically indicates the gain and input range configuration within the product family.

Replacement Considerations

Publicly confirmed substitute part numbers include ACPL-C790, AMC1300, and AMC1301. Verify pinout compatibility and electrical parameter alignment before substitution.

FAQ

What is the fixed gain of the NSI1300D25-DSWVR?

The fixed gain is 8.2.

Does the device include diagnostic features?

Yes, it includes VDD1 missing detection and input common-mode overvoltage detection.

What is the maximum insulation voltage?

The maximum insulation voltage is 5000Vrms.