AMC1305M05DW

ADCs/DACs - Special Purpose Overview

The AMC1305M05DW is a reinforced isolated sigma-delta modulator manufactured by Texas Instruments. It features a single channel with 16-bit resolution and supports a maximum sampling rate of 78 kSPS. The device accepts a differential analog input voltage range of ±50 mV, making it suitable for precision current sensing applications using shunt resistors. It utilizes a CMOS serial interface for digital output transmission across the isolation barrier. The component operates on dual power supplies, requiring an analog supply of 4.5 V to 5.5 V and a digital supply of 3 V to 5.5 V. It is housed in a 16-pin SOIC package and is rated for operation within a temperature range of -40°C to +125°C.

ADCs/DACs - Special Purpose Feature Summary

• Reinforced isolation capability with a minimum Common-Mode Transient Immunity (CMTI) of 15 kV/µs
• 16-bit resolution with a typical Signal-to-Noise Ratio (SNR) of 76 dB
• Differential input range optimized for ±50 mV signals from low-side or high-side shunts
• CMOS-compatible serial data interface for direct connection to microcontrollers or DSPs

ADCs/DACs - Special Purpose Applications

• Isolated current sensing in motor drives and inverters
• Precision current measurement in industrial automation systems
• Power supply monitoring and protection circuits
• Electric vehicle (EV) battery management systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'DW' indicates the tube packaging format rather than tape-and-reel ('DWR'). Confirm that the non-Q1 designation meets the reliability requirements for the target application, as this part lacks AEC-Q100 automotive qualification. Ensure the design accounts for the 4.5 V minimum analog supply voltage constraint during system power budgeting.

ADCs/DACs - Special Purpose Selection Notes

Select the AMC1305M05DW when the signal source provides a small differential voltage around ±50 mV. If the application requires higher input ranges such as ±250 mV, consider the AMC1305M25 variant instead. For automotive compliance, the AMC1305M05QDWRQ1 is the qualified alternative. Verify that the host system can support the required dual-supply configuration for analog and digital domains.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AMC1305 family of isolated modulators from Texas Instruments. It shares the same core architecture and pinout with variants like the AMC1305M25 and AMC1305L25, differing primarily in input range and interface type. The 'DW' suffix specifically denotes the standard commercial-grade version in a 16-SOIC package, distinct from the automotive-qualified Q1 versions.

ADCs/DACs - Special Purpose Replacement Considerations

Direct functional replacements include the AMC1305M25DW for wider input ranges or the AMC1305M05QDWRQ1 for automotive-grade requirements. Pin-compatible alternatives within the AMC130x series should be verified against specific CMTI and SNR specifications before substitution.