LTC2368CMS-24#TRPBF

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Data Acquisition - Analog to Digital Converters (ADCs) such as the LTC2368CMS-24#TRPBF have been utilized in a variety of applications ranging from process control, medical, military, and industrial wherein analog signals need to be converted to digital equivalents for processing. This article seeks to discuss the features, specification and working principle of the LTC2368CMS-24#TRPBF.

Features of the LTC2368CMS-24#TRPBF

The LTC2368CMS-24#TRPBF is a 24-bit sigma-delta ADC that is designed to convert analog signals into accurate digital equivalents. It is capable of sampling rates up to 2.4 MSPS, with a resolution of up to 24-bits. Some of its features include:

• Extremely low noise performance
• Excellent SNR performance over a wide-range of input frequencies
• Wide-degree of DC stability and repeatability
• Integrated sampling circuitry for ultimate performance
• Excellent temperature-independent linearity
• High product power-efficiency
• Flexible programming options
• Integrated selector pins for single-ended input configurations

Specifications of the LTC2368CMS-24#TRPBF

In terms of specifications, the following values have been noted:

• Input voltage range of +/- 10V
• Integrated reference voltage of 2.5V
• Low power consumption at 1.2 Watts
• Operating temperature range between -40 to 125 degrees Celsius
• Integrated power-down option
• Integrated input buffer
• No external components required Internally powered
• Programmable output data rate

Working Principle of the LTC2368CMS-24#TRPBF

The LTC2368CMS-24#TRPBF is a high-performance sigma-delta ADC. Its working principle is based on a successive-approximation technique wherein an analog input signal is sampled and compared with an internal reference voltage. Based on the results of each comparison, the ADC\'s output data is updated in order to achieve a better approximation of the desired output waveform. This process is repeated continuously until the input signal is fully digitized.

The basic sampling and comparison process of the LTC2368CMS-24#TRPBF may be divided into five distinct stages: Sample, Decimation, Threshold Conversion, Digital Filtering, and Output.

The first step under Sample stage involves the ADC integrating the input signal and creating a bitstream or stair-case waveform, based on the internal reference voltage. Under the Decimation stage, the staircase waveform is further processed in order to identify sample ranges and is compared to the reference voltage. During the Threshold Conversion stage, threshold comparators accept the output from the decimation stage and determine whether the signal is within an acceptable range of the reference voltage. In the Digital Filtering stage, the output of the threshold conversion stage is used to create digital coefficients that can be applied to the digital filter. Finally, the Output stage is used to convert the digital information from the digital filter into a stream of bits that correspond to the input signal.

This data can then be used for further processing and analysis in a variety of applications such as process control, medical, military, and industrial.

Conclusion

The LTC2368CMS-24#TRPBF is a highly integrated, high-performance sigma-delta ADC that is capable of sampling rates up to 2.4 MSPS and resolution of up to 24-bits. It is designed to rapidly convert analog signals into accurate digital equivalents and is suitable for a wide range of applications. Its working principle is based on a successive-approximation technique wherein an analog input signal is sampled and compared with an internal reference voltage. It is also known to be extremely reliable and power-efficient, with very low noise performance under varying input frequencies.

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