LTC2470IDD#PBF

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Analog to Digital Converters (ADC) are an essential component of data acquisition systems. Among the different types of ADCs, the LTC2470IDD#PBF is a particularly high-performance, low-power converter that is designed for use in demanding and harsh environments. It is a high-accuracy, 24-bit delta-sigma ADC that features differential inputs and a wide operating range of −40°C to +125°C. This article will discuss the applications and working principles of the LTC2470IDD#PBF.

Applications of LTC2470IDD#PBF

The LTC2470IDD#PBF is typically used in applications where a high degree of accuracy and reliability is required. It is well-suited for use in high-precision digital systems, including those used in medical and industrial applications, as well as test and measurement systems. Because of its wide temperature range and differential inputs, the LTC2470IDD#PBF is ideal for monitoring temperature, pressure, and other process parameters in challenging, highly dynamic industrial and laboratory environments. It is also suitable for data acquisition applications in military and aerospace applications, where the highly accurate, low-power operation of the LTC2470IDD#PBF is critical.

Working principle of LTC2470IDD#PBF

The LTC2470IDD#PBF operates on a voltage input ranging from 0V to 2.5V, or a differential input that can be optimized for different range requirements. The device is able to detect signals with a resolution up to 24 bits and a signal-to-noise ratio of up to 90dB. It uses a built-in bandgap voltage reference, and an integrated low-dropout regulator allows a low-noise power supply for operation at ±4V to ±24V. The ADC is powered by an internal oscillator that operates at up to 8MHz. It supports sampling rates of up to 500kSPS and features power dissipation of typically less than 1mW in continuous conversion mode, and typically 18uW in standby mode.

The LTC2470IDD#PBF employs a sigma-delta modulation architecture which is designed to minimize noise by exploiting the characteristics of an oversampling method coupled with noise-shaping. While most ADCs are limited in dynamic performance because of noise and component mismatch that lead to nonlinearity and integral nonlinearity, the LTC2470IDD#PBF utilizes a full-scale measurement accuracy of up to 2.5ppm and a low glitch rate of 7.1mVp-p. This leads to improved measurement accuracy and data fidelity.

The LTC2470IDD#PBF also incorporates additional features to enhance performance, such as a dedicated maintain function that provides a minimum differential output voltage, and a have its peak element accuracy digitally programmable via a serial interface.

Conclusion

The LTC2470IDD#PBF is a high-performance, low-power, 24-bit delta-sigma ADC. Its wide temperature range and differential inputs make it an ideal choice for use in applications where a high degree of accuracy is required. It features a sampling rate of up to 500kSPS, a full-scale measurement accuracy of up to 2.5ppm, and a low glitch rate of 7.1mVp-p. The LTC2470IDD#PBF is well-suited for use in digital systems for medical, industrial, and test and measurement applications, as well as military and aerospace applications.

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