ADS1240E/1KG4

Overview

The ADS1240E/1KG4 is a 24-bit analog-to-digital converter from Texas Instruments, utilizing sigma-delta architecture. It features four differential input channels and operates on a single supply voltage ranging from 2.7 V to 5.25 V for both analog and digital domains. The device supports SPI and 3-wire serial interfaces with data rates up to 15 S/s. Key electrical specifications include a maximum differential nonlinearity of +/- 1 LSB and integral nonlinearity of +/- 0.0015% FSR. It incorporates a programmable gain amplifier, general-purpose I/O, and power consumption as low as 600 uW. 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 signal conditioning
• Built-in 50 Hz and 60 Hz rejection capabilities
• General-purpose input/output pins for system flexibility

Applications

• Industrial process control systems
• Weigh scales and load cell measurements
• Temperature measurement instrumentation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm pin compatibility and packaging details. Ensure that the requested quantity matches the factory tube configuration. Confirm RoHS compliance status and humidity sensitivity handling requirements prior to assembly.

Selection Notes

Select this component when high-resolution 24-bit performance is required for low-speed applications. Consider the integrated PGA if external amplification is undesirable. Verify that the interface speed requirements align with the maximum 15 S/s sampling rate. Check power supply constraints to ensure operation within the 2.7 V to 5.25 V range.

Part Context

This part belongs to the ADS1240 series of precision ADCs designed for low-noise, high-resolution applications. It shares architectural similarities with other devices in the family but offers specific channel counts and interface options. The 'EG4' suffix typically denotes lead-free and RoHS-compliant manufacturing standards.

Replacement Considerations

Consult the official cross-reference list for direct replacements. Verify pinout compatibility and register mapping before substituting with similar models from the same or different manufacturers.