Title :
A low power time-of-arrival ranging front end based on a 8-channel 2.2mW, 53ps single-shot-precision Time-to-Digital converter
Author :
Redant, Tom ; Stubbe, Frederic ; Dehaene, Wim
Author_Institution :
ESAT-MICAS, K.U. Leuven, Leuven, Belgium
Abstract :
A ranging front end for low power cm-accurate ranging applications, based on an 8-channel Time-to-Digital converter, is presented. The implementation, fully digitizing pulses with a pulse rate up to 33MHz, contains 8 non-strobed comparators attached to an 8-channel, low power, 74ps resolution, 53ps single shot precision TDC-array, interconnected through 200mV low swing bit line signaling. The complete system consumes 4.7mW in active mode and the integrated TDC is competitive to state-of-the-art sub-100ps resolution multiple TDC-core integrations in terms of power per core and area. The complete pulse digitization enables implementation of a wide variety of time-of-arrival estimation techniques in the digital back end.
Keywords :
CMOS integrated circuits; comparators (circuits); integrated circuit interconnections; low-power electronics; time-digital conversion; 8-channel single-shot-precision time-to-digital converter; CMOS time-to-digital converter; TDC-array; fully digitizing pulse; low power time-of-arrival ranging front end; low swing bit line signaling; multiple TDC-core integration; nonstrobed comparator; power 4.7 mW; power 8.2 mW; time 100 ps; time 53 ps; time 74 ps; time-of-arrival estimation technique; voltage 200 mV; CMOS integrated circuits; Distance measurement; Propagation delay; Radiation detectors; Registers; Ring oscillators; Timing;
Conference_Titel :
Solid State Circuits Conference (A-SSCC), 2011 IEEE Asian
Conference_Location :
Jeju
Print_ISBN :
978-1-4577-1784-0
DOI :
10.1109/ASSCC.2011.6123578
