ADS1247IPWR

Overview

The ADS1247IPWR is a 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments, housed in a 20-TSSOP package. It utilizes sigma-delta architecture and supports up to three differential or single-ended input channels. The device features an integrated programmable gain amplifier (PGA), internal reference, and temperature sensor. It operates on analog and digital supply voltages ranging from 2.7V to 5.25V. The maximum sampling rate is 2k samples per second, with a serial peripheral interface (SPI) for data communication. The operational temperature range extends from -40°C to 105°C.

Feature Summary

• Integrates a high-resolution 24-bit sigma-delta ADC with a multiplexer and programmable gain amplifier for flexible signal conditioning.
• Includes built-in excitation current sources suitable for direct connection to resistive sensors such as RTDs and strain gauges.
• Features an internal oscillator and temperature sensor, reducing external component count and system complexity.

Applications

• Industrial process control systems requiring precise temperature measurement via RTD interfaces.
• Weigh scales and load cell instrumentation utilizing low-noise differential inputs.
• Medical equipment and portable instruments demanding high resolution within a compact surface-mount footprint.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the voltage and pinout configurations match the design requirements before finalizing procurement orders. Cross-reference the part marking with official documentation to prevent counterfeit components.

Selection Notes

Select this component when a balance of moderate speed and high resolution is required for multi-channel sensing applications. Consider the integrated PGA and current sources if minimizing external circuitry is a priority. Evaluate the 20-TSSOP package constraints against available board space and thermal management capabilities for the target environment.

Part Context

This device belongs to the ADS124x family of precision analog-to-digital converters from Texas Instruments. It shares architectural similarities with models like the ADS1246 and ADS1248 but offers a specific channel count and package configuration tailored for cost-sensitive industrial applications. The IPWR suffix indicates a plastic small-outline package with reel packaging.

Replacement Considerations

The ADS1246IPWR serves as a compatible alternative with identical pinouts and functionality but supports only two differential inputs instead of three. Designers should verify software compatibility and register mappings when substituting between these family members.