AD7880CRZ

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AD7880CRZ is a high-accuracy multichannel analog-to-digital converter (ADC). It is designed for industrial and consumer applications, providing 12-bit accuracy with a high degree of flexibility. The ADC features a wide power supply range and sample-and-hold operation with adjustable gain. A single low-pass filter allows for operation up to 1 MHz. It is capable of sampling multiple channels simultaneously with a sampling rate of 78kSPS.

The successful application of an ADC depends on the characterization of its input. This can be done by selecting an appropriate input range or by properly selecting a voltage reference. The AD7880CRZ provides optimal performance in data acquisition applications with either single-ended or differential inputs. The input impedance of the device is also adjustable, allowing for high impedance as well as active low impedance devices.

In terms of functionality, the AD7880CRZ outputs digital values corresponding to the analog input. The device uses an oversampling technique, the so-called Sigma-Delta architecture, which requires two clock frequencies, one for the analog-to-digital conversion and one for the subsequent digital processing (modulation). The sampling rate of the device is programmable and can be set up to 78kSPS.

The AD7880CRZ provides an on-chip multiplexer that can be used to select up to eight analog input channels. When operating with a single-ended input, the channels are referenced to a fixed voltage source, while in differential mode, the input is referenced to a common-mode voltage. The device supports both single-ended and differential voltage references.

The device includes an on-chip low-pass filter with adjustable gain and bandwidth to reduce noise, and the internal reference can be adjusted with the on-chip reference trimming feature. In order to ensure the accuracy and noise immunity of the device, temperature compensation is implemented. The temperature range of the device is 1°C to 65°C, and it has a choice of operating temperature range.

The AD7880CRZ provides a wide range of digital communication interfaces, such as SPI, I2C, UART, and parallel buses, which allow the device to be integrated into various applications. The device also features a few configurable ports, allowing the user to configure the device to optimize performance for a specific application. In addition, the device provides an interrupt output, which can be used to signal when data is ready to be read.

In summary, the AD7880CRZ is a high performance, multi-channel analog-to-digital converter designed for data acquisition applications. It features high accuracy, low noise, and high sampling rates and can be configured to optimize performance for a specific application. The device is flexible and provides digital communication interfaces, adjustable input range, and adjustable gain and bandwidth.

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