ADS1241E/1K

Overview

The ADS1241E/1K is a 24-bit analog-to-digital converter from Texas Instruments, utilizing sigma-delta architecture. It features four differential input channels and supports SPI or 3-wire digital interfaces. The device operates on analog and digital supply voltages ranging from 2.7 V to 5.25 V. Key electrical parameters include a maximum sampling rate of 15 S/s, a signal-to-noise ratio of 114 dB, and integral nonlinearity of +/- 0.0015% FSR. Differential nonlinearity is specified at +/- 1 LSB. The component is housed in an SSOP-24 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated programmable gain amplifier for flexible signal conditioning
• Built-in 50 Hz and 60 Hz rejection capabilities for noise reduction
• General-purpose input/output pins for system configuration

Applications

• Interfacing with MSP430 microcontrollers for data acquisition systems
• Precision industrial measurement applications requiring high resolution
• Sensor interface circuits utilizing differential inputs

Procurement Notes

Verify the specific suffix '1K' against the official Texas Instruments datasheet to confirm packaging quantity and tape-and-reel specifications. Ensure the order matches the required SSOP-24 package variant. Cross-reference the document revision date to guarantee access to the most current electrical characteristics and pinout definitions before finalizing procurement.

Selection Notes

Select this component when a 24-bit resolution with low power consumption is required for multi-channel applications. The integrated PGA reduces external component count compared to discrete solutions. Verify that the 15 S/s data rate meets the application's bandwidth requirements and that the SSOP-24 package fits the available PCB footprint constraints.

Part Context

This part belongs to the ADS124x family of precision ADCs designed for low-power, high-resolution applications. It shares architectural similarities with the ADS1240 but offers additional channel count and GPIO flexibility. The E/1K designation indicates a specific commercial grade and packaging format within the broader Texas Instruments analog-to-digital converter portfolio.

Replacement Considerations

The ADS1240EG4 is a documented alternative within the same series, offering similar 24-bit performance but with different channel configurations. Verify pin compatibility and software register settings when substituting between these models to ensure functional equivalence in existing designs.