SI8936D-AS4

ADCs/DACs - Special Purpose Overview

The SI8936D-AS4 is an automotive-grade, galvanically isolated delta-sigma modulator designed for voltage sensing applications. It features a single-ended input range of 0 to 2.5 V and utilizes a second-order delta-sigma modulator architecture. The device incorporates an internal oscillator providing a typical clock frequency of 10 MHz. Key electrical specifications include a typical input offset of ±0.4 mV, gain error of ±0.05%, and common-mode transient immunity (CMTI) of 75 kV/µs. It operates on supply voltages between 3.0 V and 5.5 V with a typical output supply current of 7.2 mA at 3.3 V. The component supports up to 5.0 kVRMS isolation per UL 1577.

ADCs/DACs - Special Purpose Feature Summary

• Internal 10 MHz oscillator for simplified system design
• Automotive-grade qualification with AEC-Q100 compliance
• High CMTI of 75 kV/µs for noisy environments
• Low offset drift of ±0.5 µV/°C

ADCs/DACs - Special Purpose Applications

• Automotive on-board chargers
• Battery management systems
• Charging stations

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'AS4' corresponds to the Automotive Wide Body SOIC package variant as defined in Skyworks documentation. Confirm that the required insulation rating matches the 'D' designation for 5.0 kVRMS. Ensure the application environment meets the specified operating temperature range of -40 °C to +125 °C. Check for any recent product change notices regarding manufacturing locations or material composition updates.

ADCs/DACs - Special Purpose Selection Notes

Select the SI8936D-AS4 when an internal clock source is preferred over external clocking to reduce component count. This model is suitable for applications requiring automotive reliability standards such as AIAG-compliant PPAP documentation. Compare against SI8935D-AS4 if external clock synchronization is necessary, or SI8937D-AS4 if higher bandwidth via a 20 MHz internal clock is required. Ensure the input signal remains within the 0 to 2.5 V linear range.

ADCs/DACs - Special Purpose Part Context

This part belongs to the Si8935/36/37 family of isolated delta-sigma modulators. The '36' identifier denotes the inclusion of a 10 MHz internal clock, distinguishing it from the externally clocked Si8935 and the 20 MHz internal clock Si8937. The 'D' suffix indicates a 5.0 kVRMS insulation rating, while 'AS4' specifies the automotive grade and wide body SOIC packaging.

ADCs/DACs - Special Purpose Replacement Considerations

Direct functional substitutes within the same family include SI8935D-AS4 (external clock) and SI8937D-AS4 (20 MHz internal clock). Non-family replacements require verification of isolation voltage, input range, and digital interface compatibility.