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The design is based on a commercial ADC, the Analog Device AD7177-2. It is a standalone unit that interfaces through an **optical fibre for the read-out and synchronization**. The target analog signal bandwidth is 2000 Hz, and the main design objectives are very low 1/f noise and excellent short-term stability and accuracy with an **effective resolution over 23 bits** for a bandwidth below 10 Hz.
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In the second half of 2019 several prototypes have been produced and tested.
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In 2020 year a full metrological characterization of the device will be carried out and presented.
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In 2020 a full metrological characterization of the device will be carried out and presented.
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![](https://ohwr.org/project/opt-adc-10k-32b-1cha/wikis/uploads/000a9d2c0cb5e10a42af427661d56b79/photo_closedandopen.png)
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**Left: Fully assembled device Right: Open unit with ADC mezzanine removed**<br/>
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