Title :
Integrate and fire circuit as an ADC replacement
Author :
Rastogi, Manu ; Alvarado, Alexander Singh ; Harris, John G. ; Príncipe, José C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Florida, Gainesville, FL, USA
Abstract :
We evaluate the performance of an asynchronous analog-to-digital converter known as the Integrate and Fire (I&F) circuit. The reconstruction algorithm for the sampler is presented along with the analytical results for the signal-to-noise ratio (SNR) of the reconstructed signal. We present the power vs. SNR tradeoff, based on the measurements from the chip fabricated in AMI 0.6 μm technology. The figure-of-merit (FOM) of the I&F sampler is 0.6 pj/conversion, which is comparable to the reported FOM for other synchronous and asynchronous ADCs, even though the I&F is implemented in a much older technology as compared to the other ADCs.
Keywords :
analogue-digital conversion; signal reconstruction; ADC replacement; asynchronous analog-to-digital converter; figure-of-merit; integrate and fire circuit; reconstructed signal; reconstruction algorithm; signal-to-noise ratio; size 0.6 mum; Circuits and systems; Delay; Equations; Mathematical model; Power demand; Quantization; Signal to noise ratio;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5938092
