AMC1305L25DWR

ADCs/DACs - Special Purpose Overview

The AMC1305L25DWR is a reinforced isolated sigma-delta modulator manufactured by Texas Instruments. It features a single channel with 16-bit resolution and a sampling rate of 78 kSPS. The device accepts differential analog inputs within a ±250 mV range. It utilizes an LVDS digital interface for data transmission across the isolation barrier. Power requirements include an analog supply voltage of 4.5 V to 5.5 V and a digital supply voltage of 3 V to 5.5 V. The component operates within a temperature range of -40°C to +125°C and is housed in a 16-pin SOIC package.

ADCs/DACs - Special Purpose Feature Summary

• Reinforced insulation rating for safety-critical applications
• LVDS output interface supporting high-speed data transfer up to 20 MHz
• Low power consumption of 36.1 mW
• High accuracy with 82 dB SNR and 92 dB SFDR

ADCs/DACs - Special Purpose Applications

• Current sensing in motor drives and inverters
• Grid monitoring and protection systems
• Industrial process control loops
• Medical equipment requiring galvanic isolation

ADCs/DACs - Special Purpose Procurement Notes

Verify the ordering suffix 'DWR' confirms the tape-and-reel packaging format, distinct from the tube-packaged 'DW' variant. Confirm that the specific revision level matches the design requirements, as manufacturing sources may vary. Ensure compliance with RoHS directives and check moisture sensitivity levels (MSL 3) for proper storage and handling procedures during assembly.

ADCs/DACs - Special Purpose Selection Notes

Select this model when LVDS signaling is required for noise immunity over longer isolation distances compared to CMOS outputs. The ±250 mV input range necessitates an external shunt resistor or current transformer to scale the measured signal appropriately. Compare against the AMC1305M25 series if CMOS interfaces are preferred or if automotive qualification (AEC-Q100) is not strictly required for the specific application environment.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AMC1305 family of isolated modulators designed for precision measurement. It integrates a sigma-delta modulator with a capacitive isolation barrier. The L-series designation specifically indicates the LVDS output driver, differentiating it from the M-series which uses CMOS outputs. It serves as a bridge between low-voltage analog sensors and high-speed digital processors.

ADCs/DACs - Special Purpose Replacement Considerations

The AMC1305M25DWR is a functional alternative offering identical electrical performance but with a CMOS interface instead of LVDS. For automotive applications, the AMC1305L25QDWQ1 provides equivalent specifications with AEC-Q100 qualification. Verify pin compatibility and software configuration differences when migrating between interface types.