ADS131E08SPAGR

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The ADS131E08SPAGR is a high-performance, low-power, 16-bit, 234ksps, single-supply, successive approximation, analog-to-digital converter (ADC) with on-chip sample-and-hold. It’s designed for use in a broad range of applications such as industrial, commercial, and medical products ranging from sensors, energy meters, and handhelds to instrumentation and automation. With a power consumption of only 135mW, the ADS131E08SPAGR is ideal for use in portable and battery-powered systems.

The ADS131E08SPAGR belongs to the Data Acquisition - Analog Front End (AFE) category. It provides a low-noise, fast-sampling solution and offers on-chip input signal conditioning, making it an ideal fit for applications requiring multiple-channel data conversion and/or signal amplification. It has a flexible architecture, making it suitable for a wide range of applications where accuracy, resolution, and speed are critical factors.

The ADS131E08SPAGR features an on-chip sample-and-hold section and clock system. The sample-and-hold section is integrated for accuracy, eliminating the need for an external amplifier and providing good linearity over a wide temperature range. The integrated clock system is capable of providing sampling rates from 3ksps to 226ksps.

The ADS131E08SPAGR operates at a single supply voltage of 2.7V to 3.6V and features a 16-bit DAC settling time of 3.75µs. It has a low-noise, high-precision, and low-jitter performance. The maximum input voltage is ±10V and the gain settling time is 350µs. The digital output interface includes a 2-pin (MOSI/MISO) serial peripheral interface (SPI) that supports data transfer rates up to 10MHz, and a +3.3V logic-level digital interface.

The ADS131E08SPAGR provides low power consumption with high data rate, high resolution, and small size, making it ideal for applications involving remote power maintenance and data compilation. The ADC can be used for various applications such as remote sensing, audio systems, process control, automation, instrumentation, and power management.

The principle of operation for the ADS131E08SPAGR ADC is based on a successive approximation register (SAR). The operating principle can be divided into two parts: a reference circuit and a successive approximation circuit. The reference circuit sets a reference voltage for the SAR circuit by comparing the input voltage to an internal resistor ratio. The SAR circuit then performs a "binary search" by comparing the reference voltage with the successive approximation register. The reference voltage is then adjusted based on the comparison with the register until the desired output is reached.

In summary, the ADS131E08SPAGR is an ideal choice for applications requiring a high-performance, low-power ADC with on-chip sample-and-hold and integrated clock system. It works as a part of the Data Acquisition - Analog Front End (AFE) and is used in a wide range of applications. Moreover, its operating principle is based on a successive approximation register that allows for accurate and fast results.

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