ADS127L11IPWT

Overview

The ADS127L11IPWT is a 24-bit delta-sigma analog-to-digital converter in a 20-pin TSSOP package. It supports data rates up to 400 kSPS with the wideband filter and 1067 kSPS with the low-latency filter. The device features a power-scalable architecture, consuming 18.6 mW in high-speed mode and 3.3 mW in low-speed mode. Electrical specifications include a dynamic range of 111.5 dB at 200 kSPS, total harmonic distortion of -120 dB, and integral nonlinearity of 0.9 ppm of full scale. Operating temperatures range from -40°C to +125°C.

Feature Summary

• Configurable digital filters allow optimization for either wideband AC performance or low-latency DC signal throughput within a single device.
• Integrated input and reference precharge buffers reduce signal loading effects on the front-end circuitry.
• Serial interface supports daisy-chain connections to minimize SPI I/O requirements across isolation barriers.
• Cyclic-redundancy check (CRC) functionality validates input/output data and register settings to enhance operational reliability.

Applications

• Data acquisition systems
• Shock and vibration instruments
• Acoustics and dynamic strain gauges
• Condition monitoring in factory automation
• Electroencephalogram (EEG) medical devices

Procurement Notes

Verify the specific suffix IPWT corresponds to the 20-pin TSSOP package configuration. Confirm that the ordering information matches the manufacturer's current production data sheet revision. Ensure compatibility with required voltage levels and temperature ranges before finalizing procurement decisions.

Selection Notes

Select this component when high resolution and moderate-to-high speed are required simultaneously. The choice between wideband and low-latency filters depends on whether frequency response flatness or conversion delay is the primary constraint. Verify power supply requirements align with the specified high-speed or low-speed operating modes.

Part Context

This part belongs to the ADS127L11 family of precision ADCs. It shares architectural similarities with other delta-sigma converters but is distinguished by its specific combination of 24-bit resolution and scalable power consumption. The IPWT designation identifies the surface-mount TSSOP variant suitable for space-constrained designs.

Replacement Considerations

ADS127L11IPWR is a tape-and-reel alternative of the same device type. Verify pinout compatibility and package dimensions before substitution. No other direct functional substitutes are documented in the provided source material.