Alias-free 24bit ADC aids ease of use

Alias-free 24bit ADC aids ease of use

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Analog Devices has introduced the AD7134 analogue-to-digital converter (ADC) with 24bit resolution that does not require anti-alias filter.
By Peter Clarke


The component is suitable for DC to 350kHz applications and removes the need for an anti-alias filter, and its resistive input significantly simplifies ADC drive.

The AD7134 is a quad-channel, 24-bit precision ADC with output data rate scalable from 10SPS to 1.5MSPS.  Inherent anti-aliasing up to 102 dB eliminates the need for an external anti-alias filter, thus requiring 60 fewer passive components and five fewer active components. It also saves 70% board area, relative to a typical alternative implementation. 

Asynchronous sample-rate converter, simplifies multi-device synchronization, enables user to achieve coherent sampling system with ease, and simplifies isolation requirements.

Other specifications include:

THD: -120dB typical (ideal for AC, vibration or acoustic measurements)

108dB Dynamic Range (at ODR = 374kSPS)

Multiple Linear Phase Digital Filter Options (SINC6 for low latency, FIR for passband flatness)

Offset error drift: 0.7uV/°C typical

Gain drift: 2ppm/°C typical

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