AD7492AR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Analog to Digital Converters (ADC) are becoming increasingly popular in the modern electronics market for their many applications in various industries. They are used for measuring the analog signal (such as radio signal or temperature measurement) and then convert it into digital signal (such as byte code or digital values). This allows the electronics devices to effectively take in and integrate the analog signal, reducing the complexity in the usage and manufacture process.

Within the ADC family, there is a particular device, named the AD7492AR - an analog-to-digital converter with a highly integrated design. With a good accuracy and a high conversion rate, this device is suitable for many applications and processing flows. This article will introduce the application field and working principle of the AD7492AR device.

The AD7492AR belongs to the group of first-order sigma-delta ADC. It integrates a wide 24-bit analog-to-digital converter with a high-level integrated design. This device also has a high conversion rate (2.44MHz) and high linearity (94dBFS). It has two separate channels that can be sampled simultaneously, which gives it a higher performance in terms of resolution and sampling frequency.

In addition to its high accuracy and conversion rate, the AD7492AR also has other outstanding features. It offers several operating modes such as differential, single-end input, or two-channel simultaneous sampling. Its low power consumption (only 560μA) and low EMI emissions level makes it a good choice for battery circulated device. And with its excellent output power supply rejection ratio (PSR) and internal reference voltage, the AD7492AR is suitable for mobile and portable devices.

The working principle of the AD7492AR is based on the sigma-delta conversion method. It uses a bit slicer and sample-and-hold structure to convert a high frequency analog signal into a corresponding digital signal. The analog signal is first divided into multiple small time intervals, and the sample-and-hold module stores the corresponding values of these intervals. Then the ADC bit-slicer is used to convert the sampling values into a digital signal.

The ADC bit-slicer is an important part of the whole ADC circuit. It is based on the "noise filtering" principle, which means that it can remove unnecessary noise that may appear when performing the ADC conversion, thus improving the overall accuracy of the circuit. The noise filtering process is performed by a low-pass filter, which operates at the same frequency as the analog signal to be converted. The filter will pass the lower frequencies and reject the higher frequencies, thus providing a higher accuracy in the conversion process.

In conclusion, the AD7492AR is a highly integrated analog-to-digital converter with many applications, such as measuring radio signal or temperature. It has a high resolution, high linearity, and low power consumption. Its excellent output power supply rejection ratio (PSR) and internal reference voltage also make it suitable for mobile and portable devices. Additionally, its working principle is based on the sigma-delta conversion method and its adjustable bit-slicer filter further improves the accuracy of the conversion process.

The specific data is subject to PDF, and the above content is for reference