ADS1147IPW

Analog To Digital Converters (ADC) Overview

The ADS1147IPW is a 16-bit precision analog-to-digital converter (ADC) from Texas Instruments, housed in a 20-pin TSSOP package. It features a sigma-delta architecture with a programmable gain amplifier (PGA) offering gains up to 128 V/V and an internal low-drift voltage reference. The device supports data rates up to 2 kSPS with single-cycle settling for rapid channel cycling. It includes two matched programmable excitation current sources (IDACs), a built-in temperature sensor, and digital I/O capabilities. Operating on dual supplies of 2.7 V to 5.25 V, it functions within a temperature range of -40°C to +105°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrated front-end solution with PGA, IDACs, and internal reference for sensor measurements
• Sigma-delta ADC with high linearity and 50/60 Hz rejection filters
• Flexible input multiplexer supporting thermocouple biasing and sensor burnout detection

Analog To Digital Converters (ADC) Applications

• Precision temperature sensing using RTDs, thermistors, and thermocouples
• Strain gauge and load cell measurements via resistive bridge sensors
• Industrial process control systems requiring isolated or remote sensor interfaces

Analog To Digital Converters (ADC) Procurement Notes

Verify the suffix 'IPWR' indicates a tape-and-reel packaging format, whereas 'IPW' denotes tube packaging. Confirm RoHS compliance status and moisture sensitivity level (MSL 2) requirements for surface-mount assembly processes. Ensure ordering documentation matches the specific package variant required for the manufacturing line.

Analog To Digital Converters (ADC) Selection Notes

Select this component when system design requires integrated signal conditioning for low-level sensor signals. The inclusion of IDACs simplifies RTD excitation circuitry. Compare channel count and resolution against ADS1146 and ADS1148 variants if additional inputs are needed. Verify SPI interface compatibility with the host microcontroller.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS114x family of precision ADCs designed for industrial applications. It shares architectural similarities with the ADS1146 and ADS1148 but differs in pin count and input channel configuration. The IPW/IPWR suffixes distinguish between tube and reel packaging options within the same electrical specification set.

Analog To Digital Converters (ADC) Replacement Considerations

ADS1147IPW serves as the tube-packaged equivalent to the ADS1147IPWR reel version. For alternative channel counts, consider the ADS1146 (1-channel) or ADS1148 (4/7-channel). No direct cross-brand replacements are documented in the provided source material.