LTC2368CMS-18#PBF

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Analog to Digital Converters (ADCs) are a type of data acquisition device that allows analog signals and currents to be converted into digital signals. The LTC2368CMS-18#PBF is a 18-bit ADC from Linear Technology Corporation. In this article, we will discuss the application field and working principle of the device.

Application Field

The LTC2368CMS-18#PBF is optimized for precision sensor applications, such as automotive and aerospace, where accuracy and robustness are paramount. It has excellent noise performance, with very low input-referred noise of only 19.6nV (pp) over a frequency range from 10Hz to 10MHz. This low level of noise enable it to achieve a SNR of 93dB on an 18-bit ADC. This makes it well suited for precision measurements, such as in medical and industrial environments.

The ADC also features very fast sample rate, allowing it to sample and convert up to 1msps. This high throughput makes it well suited for applications such as motor control and high-speed imaging, where fast response time is necessary. Lastly, it features programmable analog input range, allowing users to specify the input range of the device.

Working Principle

The LTC2368CMS-18#PBF follows the successive approximation register (SAR) conversion technique, in which the output value is determined by comparing the analog input voltage to a set of known reference voltages. This is done by successively increasing or decreasing the current reference voltage until the analog input voltage is breached. This process is repeated until the desired resolution is achieved.

The LTC2368CMS-18#PBF uses a two-step process for its conversion. First, the analog input is pre-amplified and then converted to digital values. The pre-amplifier allows a wide input range to be used, while the conversion is done using the SAR technique. The ADC can be programmed to accept input voltage ranges from 2.5V to 18V, allowing it to be used in different scenarios. Finally, after the conversion is completed, the digital values are outputted as 16-bit data words.

Conclusion

The LTC2368CMS-18#PBF is a 18-bit ADC from Linear Technology Corporation, featuring low noise performance, fast sampling rates and programmable analog input range. It is well suited for precision sensor applications and motor control applications, where accuracy, speed and robustness are paramount. The device follows SAR conversion technique and uses a two-step process to convert the analog inputs to digital signals.

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