AMC1304L05QDWQ1

ADCs/DACs - Special Purpose Overview

The AMC1304L05QDWQ1 is an automotive-grade, reinforced isolated sigma-delta modulator manufactured by Texas Instruments. It features a single channel with a ±50-mV input range, designed for precision current sensing applications. The device operates on a 3-V to 5.5-V supply and delivers a 16-bit resolution output via a serial CMOS interface. It supports clock frequencies up to 20.1 MHz and functions within a temperature range of -40°C to +125°C. Key electrical specifications include a differential nonlinearity (DNL) of 0.99 LSB, integral nonlinearity (INL) of 1.5 LSB, and a gain error of -0.02%. The component is housed in a 16-pin SOIC package.

ADCs/DACs - Special Purpose Feature Summary

• Automotive AEC-Q100 qualified for reliability in vehicle environments
• Reinforced isolation barrier ensuring galvanic isolation between input and output sides
• High-precision performance with low DNL (0.99 LSB) and INL (1.5 LSB)
• Low power consumption of 58.9 mW at typical operating conditions

ADCs/DACs - Special Purpose Applications

• Automotive battery management systems for precise current monitoring
• Electric vehicle (EV) motor control drives requiring isolated feedback
• On-board charging (OBC) systems for accurate current measurement
• DC/DC converter isolated current sensing in automotive powertrains

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'QDWQ1' against the official Texas Instruments datasheet to confirm automotive qualification and package type. Ensure compatibility with the system's isolation voltage requirements and serial interface timing. Check for moisture sensitivity level (MSL) handling instructions during storage and assembly. Confirm availability through authorized distributors as lead times may vary based on production schedules.

ADCs/DACs - Special Purpose Selection Notes

Select this component when high-accuracy current sensing is required in automotive applications with strict isolation needs. Compare DNL and INL specifications against system tolerance requirements. Ensure the ±50-mV input range matches the shunt resistor voltage drop. Verify that the 16-SOIC package fits the PCB layout constraints. Consider the 20.1 MHz maximum clock frequency for data rate requirements.

ADCs/DACs - Special Purpose Part Context

This part belongs to the AMC1304 family of isolated modulators from Texas Instruments. It shares architectural similarities with other AMC130x devices but is distinguished by its automotive qualification (Q1), specific ±50-mV input range, and LVDS-compatible serial output. It serves as a key component in isolated signal chains where digital isolation replaces traditional analog isolators.

ADCs/DACs - Special Purpose Replacement Considerations

Direct replacements within the same family include AMC1304M05QDWQ1 or AMC1304L25QDWQ1, depending on input range and interface requirements. Verify pinout compatibility and electrical parameter alignment before substitution. Cross-reference with AMC1305 or AMC1306 series if different input ranges or packaging options are needed.