microK 70/125 Thermometry Bridge

 

 

The original microK bridge (aimed at the secondary calibration market) provided a solid platform on which to develop the primary calibration bridges (microK 70 and microK 125). The design challenge was then to improve the performance of our existing technology substantially in order to offer the same performance as the AC bridges that were used in this application. This required improving the linearity of our ADC, which in turn meant reducing the timing jitter to below 1ps (the time it takes electrical signals to travel 0.3mm). We also had to develop a completely new signal processing technology (parallel analogue processing) in order to achieve the extremely low input noise required. This technology is unique to Metrosol and provides one of the key benefits of its primary standard bridges.

 

 

Notes from the microK Design Team

 


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