EVAL-AD7091R-2SDZ

Series:	--
Part Status:	Active
Number of A/D Converters:	1
Number of Bits:	12
Sampling Rate (Per Second):	1M
Data Interface:	DSP, MICROWIRE™, QSPI™, Serial, SPI™
Input Range:	0 ~ VREF
Power (Typ) @ Conditions:	2.8mW @ 1MSPS
Utilized IC / Part:	AD7091R-2
Supplied Contents:	Board(s), Power Supply
Base Part Number:	AD7091

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Evaluation Boards - Analog to Digital Converters (ADCs)

The EVAL-AD7091R-2SDZ is an Evaluation Board designed to convert analog signals into digital data. The unique combination of onboard hardware and peripherals makes it highly suitable for data acquisition applications. This Evaluation Board is based on the Analog Devices AD7091R-2 12-bit, 10MHz Analog-to-Digital Converter (ADC).

Application Field

The EVAL-AD7091R-2SDZ Evaluation Board is an ideal tool for exploring the features and performance of the AD7091R-2 ADC. Its design allows users to perform a wide variety of data acquisition tasks in portable instruments and embedded control systems. The Evaluation Board is capable of capturing data from a variety of input sources, including:* Pressure transducers * Temperature sensors * Stepper motors * Current transducers * Photodiode amplifiers

Working Principle

The operating principle of the EVAL-AD7091R-2SDZ Evaluation Board is simple. It consists of an Analog Devices AD7091R-2 12-bit, 10MHz ADC and a variety of onboard hardware and peripherals. A signal is input into the Evaluation Board and is converted to a digital representation. The digital information is then collected and processed by the attached peripherals to produce an output or control signal. The ADC accepts a single-ended or differential input signal and converts it into a 12-bit digital code. The ADC consists of a preamplifier and a track-and-hold circuit. The preamplifier amplifies the input signal and feeds it to the track-and-hold circuit, which stores the signal in a capacitor. This capacitance is then discharged and the conversion result is sent out. The EVAL-AD7091R-2SDZ Evaluation Board also provides a number of interfacing peripherals, including: * A pair of 2-channel digital-to-analog converters (DACs)* A pair of 4-channel multiplexers * A programmable-gain amplifier * An oscillator* A voltage reference These peripherals provide the ability to route signals through the VR1 and VR2 switches, to control the gain of the amplifier, and to select the appropriate clock frequency. The two D/A converters allow for controlling the differential input offset and gain. The Evaluation Board is programmed via the AD7091RE board, which also provides the ability to monitor and troubleshoot the system. The AD7091RE board also provides a connection to a PC via USB connection.

Conclusion

The EVAL-AD7091R-2SDZ Evaluation Board is an excellent tool for evaluating the performance of the AD7091R-2 ADC. The combination of onboard hardware and an extensive suite of peripherals makes it ideal for a variety of data acquisition applications, including pressure transducers, temperature sensors, current transducers, and photodiode amplifiers. The ADC itself is capable of processing single-ended and differential inputs, and the programmable-gain amplifier and peripheral components provide the ability to configure and troubleshoot the system.

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