Abstract

This user's guide describes the characteristics, operation, and use of the ADS127L21 evaluation module (EVM). This kit is an evaluation platform for the ADS127L21, which is a 24-bit, high-speed, wide-bandwidth, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The ADS127L21 offers excellent ac and dc performance, along with multiple internal digital filter options including a fully programmable finite impulse response (FIR) and infinite impulse response (IIR) filter, making the device useful for a wide variety of data acquisition applications. The ADS127L21EVM eases the evaluation of the device with hardware, software, and computer connectivity through the universal serial bus (USB) interface. This user's guide includes complete circuit descriptions, schematic diagrams, and a bill of materials. Throughout this document, the abbreviation EVM and the term evaluation module are synonymous with the ADS127L21EVM.