SI8937D-IS4R

ADCs/DACs - Special Purpose Overview

The SI8937D-IS4R is a single-channel, 5.0 kVrms isolated Delta-Sigma modulator from Skyworks Solutions. It operates on a 3 V to 5.5 V supply with a typical quiescent current of 7 mA. The device features a 40 kHz 3dB bandwidth and a maximum input offset voltage of 400 uV. Designed for surface-mount installation in tube packaging, it supports an operating temperature range from -40°C to +125°C. This component integrates isolation capabilities directly into the signal chain for high-precision applications.

ADCs/DACs - Special Purpose Feature Summary

• Provides 5.0 kVrms basic isolation rating between input and output
• Integrates a Delta-Sigma modulator with 40 kHz bandwidth
• Low input offset voltage specification of 400 uV maximum
• Operates within a wide industrial temperature range of -40°C to +125°C

ADCs/DACs - Special Purpose Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment needing high-voltage isolation safety
• Power monitoring circuits in energy management systems
• Sensor conditioning interfaces in harsh environments

ADCs/DACs - Special Purpose Part Context

The SI8937D-IS4R belongs to the Si893x family of isolated Delta-Sigma modulators. It shares core architectural similarities with the SI8937D-IS4, differing primarily in the reel-based tape-and-reel packaging format suitable for automated assembly. This part number represents the standard commercial grade variant within the series.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible alternatives within the same isolation amplifier category include the SI8936D-IS4R and SI8935D-IS4R. Selection should verify specific bandwidth and offset requirements against the datasheet specifications of these sibling parts.