ADS1148IPWR

Analog To Digital Converters (ADC) Overview

The ADS1148IPWR is a 16-bit sigma-delta analog-to-digital converter (ADC) designed for precision sensor measurements, housed in a 28-pin TSSOP package. It features an integrated multiplexer supporting up to eight differential or sixteen single-ended input channels. The device operates on dual power supplies ranging from 2.7 V to 5.25 V and supports data rates up to 2 kSPS. Key internal components include a programmable gain amplifier with gains up to 128 V/V, an internal low-drift voltage reference, and two excitation current sources. It utilizes an SPI interface for communication and functions within a temperature range of -40°C to +105°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrated front-end solution combining a low-noise PGA, delta-sigma ADC, and digital filter for simplified system design.
• Built-in excitation current sources enable direct connection to resistive sensors such as RTDs and thermistors without external circuitry.
• Digital filter provides selectable rejection of 50 Hz and 60 Hz interference for stable readings in noisy environments.

Analog To Digital Converters (ADC) Applications

• Precision temperature measurement using resistance temperature detectors (RTDs).
• Thermocouple signal conditioning and digitization.
• High-resolution data acquisition for strain gauges and load cells.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the component meets RoHS3 compliance requirements for your region. Confirm that the 28-TSSOP package dimensions align with your PCB footprint constraints before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this model when high channel count and integrated sensor excitation are required. Compare against the ADS1147 if fewer input channels suffice, as it uses a smaller 20-pin package. Consider the ADS1248 series if higher resolution beyond 16 bits is necessary for the application.

Analog To Digital Converters (ADC) Part Context

This component belongs to the Texas Instruments ADS114x family of 16-bit analog-to-digital converters. The family shares common architectural features including sigma-delta modulation and integrated programmable gain amplifiers. The IPWR suffix indicates a specific industrial-grade temperature range and tape-and-reel packaging format suitable for automated surface-mount assembly.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS1147IPWR serves as a lower-channel-count alternative within the same family. Verify pin compatibility carefully, as the ADS1147 utilizes a 20-pin TSSOP package compared to the 28-pin configuration of the ADS1148. Cross-reference datasheets to ensure functional equivalence regarding current sources and reference stability.