Four-channel precision ADC offers performance and functionality

Analog Devices AD7134 4-Channel Precision Analog-to-Digital Converter, available now from Mouser, is a low noise, simultaneous sampling, precision ADC that gives performance, functionality, and simplicity of use. Based on the continuous-time sigma-delta modulation scheme, the device excludes the traditionally required switched capacitor circuitry sampling preceding the Σ-Δ modulator. This feature directs to the ease of the ADC input driving necessity. The ADC CTSD architecture also naturally rejects signals about the ADC aliasing frequency band, delivering the device its inherent antialiasing capability, and removes the necessity for a complex external antialiasing filter.

The device includes four independent converter channels in parallel, each one with a CTSD modulator and a digital decimation and filtering path. The ADC facilitates concurrent sampling of four separate signal sources, each one supporting an input bandwidth up to a maximum of 391.5kHz and attaining tight phase matching between these four signal measurements. The increased level of channel integration, with its simplified analog front-end need, allows the device to deliver a high-density multichannel data acquisition solution in a small form factor.

Typical applications include electrical test and measurement, audio test, three-phase power quality analysis, control and hardware in loop verification, sonars, condition monitoring for predictive maintenance, and acoustic and material science research and development.