SI8935B-ASR

ADCs/DACs - Special Purpose Overview

The SI8935B-ASR is an automotive-grade, galvanically isolated delta-sigma modulator designed for voltage sensing applications. It features a single-ended analog input with a nominal range of 0 to 2.5 V and requires an external clock signal up to 25 MHz on the ACLK pin. The device provides high common-mode transient immunity (CMTI) of 75 kV/µs and supports isolation voltages up to 5000 VRMS under UL1577 standards. Packaged in a narrow body 8-pin SOIC, it operates within a temperature range of -40°C to +125°C.

ADCs/DACs - Special Purpose Feature Summary

• Automotive-grade qualification with AEC-Q100 certification
• External clock input supporting frequencies up to 25 MHz
• High CMTI of 75 kV/µs for noisy environments
• Galvanic isolation rated up to 5000 VRMS

ADCs/DACs - Special Purpose Applications

• Automotive on-board chargers
• Battery management systems
• Charging stations
• Industrial inverters
• Motor control drives

ADCs/DACs - Special Purpose Procurement Notes

Verify that the specific ordering suffix corresponds to the narrow body SOIC package and reel packaging configuration required for the assembly process. Confirm that the design utilizes an external clock source compatible with the Si8935 architecture, as internal oscillators are not present in this variant. Ensure compliance with moisture sensitivity level requirements during storage and soldering.

ADCs/DACs - Special Purpose Selection Notes

Select the SI8935B-ASR when an external clock synchronization between the modulator and the digital filter is necessary. This part is suitable for designs requiring AEC-Q100 compliance and narrow body footprint constraints. Compare against Si8936 or Si8937 variants if an integrated internal clock is preferred instead of managing external clock distribution.

ADCs/DACs - Special Purpose Part Context

This component belongs to the Si893x family of isolated delta-sigma modulators from Skyworks Solutions. The 'B' designation indicates automotive-grade manufacturing flows and qualification. The 'AS' suffix specifies the narrow body SOIC package type, while 'R' denotes tape and reel shipping format.

ADCs/DACs - Special Purpose Replacement Considerations

Direct functional replacements include other parts within the Si893x family such as the Si8936 or Si8937, provided the system can accommodate internal clock generation rather than external clocking. Verify package compatibility and insulation ratings before substitution.