MAX11905EVKIT#

Introduction

The MAX11905EVKIT evaluation board is a low-power, configurable data acquisition system designed to evaluate the performance of the MAX11905 analog-to-digital converter (ADC). This evaluation board is ideal for system test and prototyping of low-power data acquisition systems. By interfacing to the USB port, the MAX11905EVKIT enables designers to benchmark their systems quickly, evaluate performance, and determine the optimum ADC configuration.

Applications

The MAX11905EVKIT is suitable for applications such as medical equipment, consumer electronics, entertainment, digital signage, and automotive electronics. The evaluation board is capable of low-power data acquisition from a variety of analog sources, such as bridge sensors, force sensors, temperature sensors, strain gauges, chemical sensors, and load cells. The evaluation board allows for fast and accurate data measurement and conversion within the low-power range.

Working Principle

The MAX11905EVKIT exploits the high performance, low-power SIGMA-DELTA (Σ-Δ) architecture of the MAX11905 ADC for accurate conversion of small signal conditioning ranges. The Σ-Δ architecture digitally processes the analog signals obtained from the connected sensors in order to convert them into digital points. Furthermore, the integrated low-power operation holds down the active power consumption of the system, while also extending battery life for portable applications.

The Sigma-Delta modulator architecture performs several integration and decimation operations simultaneously, to achieve an effective signal-to-noise ratio in the output digital signal. The steps implemented are the high-pass filtering of the input signal by the Sinc filter of the ADC, the subsequent conversion of the filtered signal to a binary number, and the further digital oversampling of that binary number to achieve fine resolution of the final output.

Conclusion

The MAX11905EVKIT evaluation board provides a comprehensive platform for assessing the performance and power consumption of the MAX11905 low-power ADC. Its extensive feature set makes it ideal for low-power applications in the medical, consumer, entertainment, automotive, and digital signage markets. The integrated SIGMA-DELTA (Σ-Δ) architecture allows for fast and accurate measurement and conversion of small signal conditioning ranges.