ADS1147IPWR

Analog To Digital Converters (ADC) Overview

The ADS1147IPWR is a 16-bit analog-to-digital converter (ADC) from Texas Instruments, housed in a 20-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 differential or single-ended inputs via an integrated multiplexer, providing two channels for differential operation or three for single-ended. It delivers data rates up to 2 kSPS with digital filter stability within one cycle. Operating on 2.7 V to 5.25 V supplies, it functions across a temperature range of -40°C to +105°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrated precision front-end solution combining PGA, ADC, and internal reference for sensor applications
• Built-in excitation current sources (IDACs) for direct RTD and thermistor biasing
• Multiplexer with dedicated circuitry for sensor burnout detection and thermocouple offset compensation

Analog To Digital Converters (ADC) Applications

• Precision temperature measurement using RTDs, thermistors, and thermocouples
• Small-signal measurements involving resistive bridge sensors
• Industrial process control systems requiring high-resolution signal conditioning

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature grade. Ensure compatibility with SPI interface requirements and supply voltage levels during integration. Confirm RoHS compliance status for regulatory adherence. Validate pinout assignments against the target PCB layout to prevent connection errors.

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 reduces external component count for resistance-based sensors. Consider the 20-TSSOP footprint constraints and verify that the 2 kSPS maximum data rate meets application bandwidth needs.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS114x family of 16-bit, 2-kSPS analog-to-digital converters designed for precision sensor measurements. It shares architectural similarities with the ADS1146 and ADS1148 but offers a specific channel configuration optimized for compact designs. The IPWR suffix indicates a tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Analog To Digital Converters (ADC) Replacement Considerations

ADS1146IPWR: Offers similar performance with fewer input channels. ADS1148IPW: Provides higher channel counts in a larger package. Verify pin compatibility and software register mapping before substitution.