ADS8698IDBTR

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Analog to digital converters (ADC) are essential for any digital system for successful data acquisition. The ADS8698IDBTR is a high-performance and low-power integrated 16-bit conversion solution for acquiring signals across a broad range of applications. The corresponding ADC architecture and circuitry are provided to ensure the highest performance and the most flexibility in application.

The ADS8698IDBTR integrates two 16-bit delta-sigma analog-to-digital converters (ADCs) in a single device, with a single-ended analog input voltage range of 2V and unipolar or bipolar digital output data formats. The converters consist of a low noise, low power, differencing preamplifier; a successive approximation register (SAR) and quantizer; and a digital filter that converts analog input signals into 16-bit digital output codes. An internal clock frequency, programmable over a range of 50 kHz to 500 kHz, is provided to set the maximum settling time.

This device can be used in a wide range of applications including air conditioning systems, robotics, test and measurement instruments, RF radios, and more. The rapid speed and wide dynamic range makes it ideal for applications like temperature measurement with resolution to 1/10th of a degree Celsius, in addition to sensor detection, system control, and signal processing.

The working principle of the ADS8698IDBTR is based on the residue of the SAR and quantizer technique which introduces the benefit of low power operation. Its main structure includes the ground reference voltage, pre-amplifier, SAR and comparator, residue amplifier and clock driver.

The pre-amplifier performs the task of linearizing and amplifying the input signal in order to reduce the effect of noise and improve the dynamic range of signals. The SAR uses multiple stages of comparators to accurately determine the input voltage and generate an output code. This voltage is then compared to a reference voltage and an output code is generated. The residue amplifier is then used to amplify the residual errors and a clock driver will provide a set of logic pulses which reset the SAR flip-flops and finish the conversion process.

In conclusion, the ADS8698IDBTR Analog to Digital Converter provides high speed conversion, low power consumption, flexibility in application and a wide dynamic range making it ideal for a range of data acquisition operations including air conditioning systems, robotics, test and measurement instruments, RF radios, and more.

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