AMC1305M25DW

ADCs/DACs - Special Purpose Overview

The AMC1305M25DW is a single-channel, reinforced isolated sigma-delta modulator manufactured by Texas Instruments. It features a differential analog input range of ±250 mV and provides 16-bit resolution with a typical sampling rate of 78 kSPS. The device operates on separate analog (4.5 V to 5.5 V) and digital (3 V to 5.5 V) power supplies, consuming approximately 36.1 mW. It utilizes a CMOS serial interface for data output and offers a minimum common-mode transient immunity (CMTI) of 15 kV/µs. Packaged in a 16-pin SOIC, it supports an operating temperature range from -40°C to +125°C.

ADCs/DACs - Special Purpose Feature Summary

• Reinforced isolation with 7 kV peak voltage rating
• 16-bit resolution with 85 dB SNR and 92 dB SFDR
• ±250 mV differential input range suitable for shunt-based current sensing
• CMOS serial interface compatible with standard microcontrollers

ADCs/DACs - Special Purpose Applications

• Isolated current sensing in motor drives and inverters
• Grid-tied solar inverter monitoring
• Industrial process control systems requiring galvanic isolation
• White goods and appliance motor control

ADCs/DACs - Special Purpose Procurement Notes

Verify the package type matches the SOIC-16 specification. Confirm the suffix 'DW' indicates tube packaging rather than tape-and-reel. Ensure the component meets AEC-Q100 requirements if automotive qualification is necessary, as this specific part number may not carry the Q1 designation.

ADCs/DACs - Special Purpose Selection Notes

Select this model when a ±250 mV input range is required. Compare against the AMC1305M05DW for applications needing a smaller ±50 mV input range. Consider the AMC1305L25DW if LVDS signaling is preferred over CMOS interfaces for higher noise immunity in long-distance traces.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AMC1305 family of isolated modulators. It shares architectural similarities with the AMC1304 and AMC1306 series but is distinct in its input voltage range and interface type. The 'M25' suffix denotes the ±250 mV input capability and CMOS interface, differentiating it from other variants in the lineup.

ADCs/DACs - Special Purpose Replacement Considerations

Direct functional substitutes include the AMC1305M25DWR (tape-and-reel version) and the AMC1305M25QDW (automotive qualified version). Cross-family replacements like the AMC1306M25DWV offer similar performance in an 8-pin SOIC package.