AD7357BRUZ

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The AD7357BRUZ is an advanced, multi-channel, analog-to-digital converter designed to provide high accuracy and high-speed data acquisition solutions. This device offers eight analog-to-digital converter inputs and supports differential and single-ended voltage input, single-ended current measurement, and temperature sensor inputs. The AD7357BRUZ is fully compatible with the industry standard TSMC CMOS process and is adjustable for multiple frequency variations and operating temperatures, enabling it to be used in a wide variety of data acquisition applications.

Application Field

The AD7357BRUZ is an ideal analog-to-digital converter for data acquisition applications in automotive, medical, test and measurement, process control, and consumer markets. The device is particularly well suited for applications requiring high-speed, high-accuracy analog-to-digital data conversion with low power consumption and minimal error. Additionally, the device supports both single-ended and differential voltage inputs as well as single-ended current measurement and temperature sensor input.

Working Principle

The AD7357BRUZ operates on a differential parallel architecture, which is designed to minimize errors and provide maximum linearity. The device utilizes a differential flash converter to perform the analog-to-digital conversion process. The differential circuitry is used to eliminate common-mode noise and reduce gain errors. When the device is powered up, it initializes the analog channels and performs an input calibration. Once this process is complete, the device is ready to begin data acquisition.

Conversion begins when a signal is applied to the analog inputs. The differential flash converter compares the input signal with successive reference voltages stored in its memory and determines the digital output for each sample. The converter is able to sample at a rate of 3Msps, making it suitable for applications requiring high-speed data acquisition. Once the desired number of samples has been acquired, the device can be configured to output the data measurements in the MSB- or LSB-first format.

The AD7357BRUZ is equipped with several features designed to improve resolution, accuracy, and power consumption. These features include an adjustable signal-to-noise ratio (SNR) control and an adjacent signal suppression (ASR) capability. The SNR control allows users to reduce the signal\'s dynamic range by reducing the overall input voltage level. This feature is useful for applications requiring lower resolution but higher accuracy. The ASR function helps reduce the effects of signal aliasing by suppressing signals near the input frequency and enabling the device to achieve a better signal-to-noise ratio.

The AD7357BRUZ also features an on-chip temperature sensor, which enables it to automatically adjust the analog channels for temperature variations. This feature helps ensure maximum accuracy and reliability over a wide range of operating temperatures. Additionally, the device incorporates a low-saturation switch mode power supply (SMPS), which helps minimize power consumption.

In summary, the AD7357BRUZ is a highly advanced, high-precision analog-to-digital converter designed for demanding data acquisition applications. The device is equipped with several features designed to maximize accuracy, reduce power consumption, and improve resolution. Additionally, the device is fully compatible with the industry standard TSMC CMOS process and is adjustable for multiple frequency variations and operating temperatures, making it an ideal analog-to-digital converter for a variety of applications.

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