AD9652BBCZRL7-310

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It comes as no surprise that today’s markets are highly demanding on data acquisition: conversion speed, signal resolution, and accuracy are part of a few important factors. Fortunately, the current market offers superior solutions for data acquisition – the Analog to Digital Converter (ADC) is one of them. The AD9652BBCZRL7-310 is one of such solutions, and is designed to provide the precision, accuracy and reliability of the multi-application Analog-to-Digital converters. This ADC can perform conversion in four modes: single-conversion, scan, burst, and continuous. Depending on the mode used, this device can sample a maximum conversion rate of up to 265kSPS. With its high speed, accuracy and impeccable performance, this ADC can achieve maximum signal resolution of 16 bit (1 in 65536) from a selected input voltage range. Furthermore, the AD9652BBCZRL7-310 can achieve the input settling time (an operation in which the input signals settle to their required levels) of 16.5 % of converter clock cycles. This is considered a fast settling time and reflects the ADC’s immense speed capabilities. AD9652BBCZRL7-310 offers a wide range of application fields. Besides being used in laboratory and scientific equipment as well as medical systems, this ADC boasts impressive functionality in communications, audio systems, industrial automation, and military applications. This device is also employed in automotive applications such as automotive sensor data acquisition, anti-lock braking systems, monitoring of engine related parameters and drive-by-wire systems. The AD9652BBCZRL7-310 uses a two-step conversion process, demonstrated in the following scheme. When the conversion commanded is issued, the internal sample and hold index begins the cycle. The input signal is held, and then digitized by the ADC core device. The digital code produced by the conversion is then made available through the device output in the form of a binary data stream. The transfer of data to the user is gavelled a “readback”, and the pair of readback devices are known as the information FIFO. The FIFO stores the converted data until it is read by the user. The digital core of the AD9652BBCZRL7-310 is the core of the ADC and is responsible for the actual conversion from the analog to the digital domain. This is performed by means of an integrated SAR (successive approximation register) ADC architecture. The SAR ADC works by doing successive approximation of the analog value that is being converted by the ADC. The input analog value is compared with the output of an internal reference DAC and the remaining bits of the output of the comparator are fed back to the SAR ADC as the new output value. This process is repeated until the analog voltage equals the DAC value. The resulting code reflecting the analog value then becomes available in the FIFO.

As mentioned before, the AD9652BBCZRL7-310 can operate in four modes – single-conversion, scan, burst, and continuous. Single-conversion mode is the simplest and most frequently used mode. In this case a conversion is initiated manually, and the result is made available in the digital domain through the FIFO. For scan mode, a sequence of conversions occurs, resulting in a series of measurements. Burst mode is similar to scan – the difference being that the scan is limited in the amount of bytes transferred (burst size). Continuous mode is the most complex of the operation modes, as it involves a continuous stream of data transferred from the FIFO. The AD9652BBCZRL7-310 process is powered by its internal low-noise voltage reference and low-drift capacitive array designed to ensure maximum integration with the device as well as reliable and accurate data acquisition. In addition, the chip also offers onboard temperature sensors which can be used to monitor the ambient temperature and provide feedback to regulate the device operation. This temperature monitoring provides optimised performance and repeatability over different temperature and usage conditions. The AD9652BBCZRL7-310 possesses the necessary qualities to ensure the precision and accuracy of data conversion. Coupled with its varied application fields and working principles, this device is indeed a reliable solution for data acquisition.

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