AMC1305L25QDWRQ1

ADCs/DACs - Special Purpose Overview

The AMC1305L25QDWRQ1 is an automotive-grade, reinforced isolated modulator manufactured by Texas Instruments. It features a ±250mV input range and utilizes an LVDS interface for digital output. The device operates on a single supply voltage between 3.3 V and 5 V, consuming typical power of 49.3 mW. It provides 16-bit resolution with a maximum clock frequency of 20.1 MHz. Key electrical specifications include a minimum common-mode transient immunity (CMTI) of 15 kV/µs and a signal-to-noise ratio (SNR) of 85 dB. The component is housed in a 16-SOIC package and is qualified to AEC-Q100 standards for operation within a temperature range of -40°C to +125°C.

ADCs/DACs - Special Purpose Feature Summary

• Reinforced isolation rating with 15 kV/µs CMTI
• LVDS digital interface for high-speed data transmission
• 16-bit resolution Delta-Sigma architecture
• AEC-Q100 qualified for automotive applications

ADCs/DACs - Special Purpose Applications

• Automotive current sensing systems
• Isolated motor control feedback loops
• High-voltage measurement instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'QDWRQ1' corresponds to the tape-and-reel packaging format required for automated assembly. Confirm that the LVDS interface compatibility matches the receiving ADC or DSP logic levels. Ensure the design accounts for the 16-SOIC thermal dissipation characteristics given the 49.3 mW power consumption at maximum operating temperatures.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a differential LVDS interface is preferred over CMOS for noise immunity in high-speed isolated applications. The ±250mV input range suits shunt-based current sensing where higher voltage inputs are not required. Compare against the AMC1305M25QDWRQ1 if a CMOS interface is acceptable, as it offers lower power consumption (36.1 mW). Ensure the system clock supports the 20.1 MHz maximum modulation rate.

ADCs/DACs - Special Purpose Part Context

This part belongs to the AMC1305x-Q1 family of isolated modulators from Texas Instruments. It shares the same core Delta-Sigma architecture and isolation barrier as other variants but differs in its digital output interface. Unlike the AMC1305M series which uses CMOS, this variant employs LVDS, offering improved noise performance at higher data rates. It is distinct from the AMC1301 series, which is a precision amplifier rather than a modulator.

ADCs/DACs - Special Purpose Replacement Considerations

The AMC1305M25QDWRQ1 serves as a functional alternative if the application can accommodate a CMOS interface instead of LVDS. Both parts share identical isolation ratings, input ranges, and resolution. Designers must verify that the downstream circuitry supports the specific signaling protocol of the replacement.