AMC3306M25QDWERQ1

Overview

The AMC3306M25QDWERQ1 is an automotive-grade, precision isolated delta-sigma modulator with a fully integrated DC/DC converter. It features a ±250mV input range optimized for shunt-based current sensing and provides 16-bit resolution at 78kSPS using a sinc3 filter. The device operates on a single low-side supply (3V to 5.5V) and offers reinforced isolation certified to VDE 0884-17 and UL1577 standards. Key electrical parameters include a minimum common-mode transient immunity of 75kV/µs, offset error of ±50µV, and gain error of ±0.2%. It functions within an ambient temperature range of –40°C to +125°C.

Feature Summary

• Integrated isolated DC/DC converter enables single-supply operation from the low side
• Reinforced capacitive isolation barrier certified for safety-related applications
• Optimized for direct connection to low-impedance shunt resistors
• System-level diagnostic features including active-low status indicator

Applications

• HEV/EV onboard chargers (OBC)
• HEV/EV DC/DC converters
• HEV/EV traction inverters
• HEV/EV battery management system (BMS)

Procurement Notes

Verify the specific ordering suffix matches the required package and tape/reel configuration. Confirm that the component meets AEC-Q100 Grade 1 qualification requirements for your target automotive application environment. Ensure the design accounts for the specified thermal derating curves to maintain junction temperatures within safe limits during operation.

Selection Notes

Select this component when space-constrained designs require high-precision current measurement with integrated isolation power generation. It is suitable for applications demanding high common-mode rejection and low EMI emissions. Consider the digital interface timing requirements and the need for an external digital filter to achieve the specified 16-bit resolution performance.

Part Context

This part belongs to the AMC3306M25-Q1 family of precision isolated delta-sigma modulators. It is specifically designed for automotive environments where reinforced isolation and high reliability are mandatory. The device integrates the isolation barrier and power conversion, distinguishing it from standard isolated amplifiers or ADCs that require external isolation supplies.

Replacement Considerations

AMC3306M25DWE

FAQ

How does the integrated DC/DC converter affect the power supply design?

The integrated converter allows single-supply operation from the low side, eliminating the need for separate isolated power sources for the high-side circuitry.

What certification does the isolation barrier hold?

The reinforced capacitive isolation barrier is certified according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards.