SI8936B-ISR

ADCs/DACs - Special Purpose Overview

The SI8936B-ISR is a galvanically isolated delta-sigma modulator designed for voltage sensing applications. It features an integrated 10 MHz internal oscillator and supports a nominal input range of 0 to 2.5 V. The device provides high common-mode transient immunity (75 kV/µs) and operates within a supply voltage range of 3.0 V to 5.5 V. It utilizes Skyworks proprietary CMOS isolation technology, offering up to 2500 VRMS withstand voltage per UL1577. The output delivers a 1-bit digital stream synchronous to the internal clock, suitable for processing by MCUs or FPGAs.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 10 MHz internal clock generator
• High common-mode transient immunity of 75 kV/µs
• Nominal 0 to 2.5 V single-ended input voltage range
• CMOS isolation barrier with 2500 VRMS safety rating

ADCs/DACs - Special Purpose Applications

• Industrial inverters
• Heavy electric vehicle (HEV) and renewable energy systems
• AC, brushless, and DC motor controls
• Isolated switch mode power supplies
• Battery management systems

ADCs/DACs - Special Purpose Procurement Notes

Verify that the 'B' suffix corresponds to the 2.5 kVRMS insulation rating and the 'IS' suffix indicates the Wide Body SOIC package. Confirm the 'R' suffix matches the required tape and reel packaging format. Ensure the component meets specific automotive qualification requirements if applicable to the design.

ADCs/DACs - Special Purpose Selection Notes

Select the SI8936B-ISR when an internal clock source is preferred over external clocking to simplify PCB layout. This model is appropriate for applications requiring 2.5 kVRMS isolation. Compare against the SI8935 series if external clock synchronization is necessary, or the SI8937 series if a higher 20 MHz internal clock frequency is required for faster data rates.

ADCs/DACs - Special Purpose Part Context

This component belongs to the Si8935/36/37 family of isolated delta-sigma modulators. The SI8936 variant specifically differentiates itself by incorporating a 10 MHz internal clock, whereas the SI8935 requires an external clock and the SI8937 offers a 20 MHz internal clock. All variants share similar electrical characteristics regarding input range and isolation performance.

ADCs/DACs - Special Purpose Replacement Considerations

Direct functional replacements within the same family include the SI8935B-ISR (external clock) and SI8937B-ISR (20 MHz internal clock). Verify that the replacement part maintains the required 2.5 kVRMS insulation rating and package dimensions.