Analog Devices AD7768-4 | Demoboard BR-066436 /EVAL-CN0582-USBZ

Description

The CN0582 is a complete solution capable of measuring data from analog sensors using the provided software or API libraries.The system offers a variable amplitude and frequency sinusoidal signal to drive an external shaker table as a test stimulus for reading back different sensor responses.The solution comes with evaluation software that provides full control over all the board’s functions. These functions include enabling current sources and ac- or dc-coupling, input bias adjustment, data capture in both time and frequency domain, providing a single-tone or sweeping sinusoid, and data export.The optional software API library is compatible with many different environments, and was tested using LabVIEW, C#, and Python. The API enables customers to develop their own custom functions and complete applications.Several key features of this solution are as follows:4-channel simultaneous data acquisition On-board IEPE excitation IEPE input channel offsetting Signal Generator: Single tone or linear sweep Electronic loopback testing Shaker table excitation CN0582 Evaluation Software System configuration Graphical display File export (data acquisition, vibration test)

Features

• Precision ac and dc performance
• 8-/4-channel simultaneous sampling
• 256 kSPS maximum ADC ODR per channel
• 108 dB dynamic range
• 110.8 kHz maximum input bandwidth (−3 dB BW)
• −120 dB THD, typical
• ±2 ppm of full-scale range (FSR) integral nonlinearity (INL), ±50 μV offset error, ±30 ppm of FSR gain error
• Optimized power dissipation vs. noise vs. input bandwidth
• Selectable power, speed, and input bandwidth
• Fast (highest speed): 110.8 kHz BW, 51.5 mW per channel
• Median (half speed): 55.4 kHz BW, 27.5 mW per channel
• Low power (lowest power): 13.8 kHz BW, 9.375 mW per channel
• Per channel digital filter
• Programmable input bandwidth/sampling rates
• CRC error checking on data interface
• Daisy-chaining
• Linear phase digital filter
• Low latency sinc5 filter
• Wideband brick wall filter: ±0.005 dB ripple to 102.4 kHz
• Analog input precharge buffers
• Power supply
• AVDD1 = 5.0 V, AVDD2 = 2.25 V to 5.0 V
• IOVDD = 2.5 V to 3.3 V or IOVDD = 1.8 V
• 64-lead LQFP package, no exposed pad
• Temperature range: −40°C to +105°C

Typical applications

• Instrumentation and industrial control loops
• High precision medical electroencephalogram (EEG)/electromyography (EMG)/electrocardiogram (ECG)
• Audio testing and measurement

More information

• Datasheet
• IC product information