An ultra-low power 10-bit, 50 MSps SAR ADC for multi-channel readout ASICs
- Firlej, Mirosław
- Fiutowski, Tomasz
- Idzik, Marek
- Kulis, Szymon
- Moroń, Jakub
- Świentek, Krzysztof
DOIAbstract
The design and measurement results of a fast, ultra-low power, small area 10-bit SAR ADC, developed for multi-channel readout systems, in particular for applications in particle physics experiments, are discussed. A prototype ASIC was designed and fabricated in 130 nm CMOS technology and a wide spectrum of static (INL<0.4 LSB, DNL<0.3 LSB) and dynamic (ENOB=9.45) measurements was performed to study and quantify the performance of ADC.The ADC converts analogue signals with a sampling frequency up to 55 MHz and power consumption below 1 mW.The ADC works asynchronously, so no external clock is required. The ADC Figure of Merit (FOM) at 50 MHz sampling frequency is 24 fJ/conv.-step, and is the lowest among the State of the Art designs with simi...
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