DocumentCode
1205074
Title
A Multi-Path Gated Ring Oscillator TDC With First-Order Noise Shaping
Author
Straayer, Matthew Z. ; Perrott, Michael H.
Author_Institution
Cambridge Analog Technol., Inc., Bedford, MA
Volume
44
Issue
4
fYear
2009
fDate
4/1/2009 12:00:00 AM
Firstpage
1089
Lastpage
1098
Abstract
An 11-bit, 50-MS/s time-to-digital converter (TDC) using a multipath gated ring oscillator with 6 ps of effective delay per stage demonstrates 1st-order noise shaping. At frequencies below 1 MHz, the TDC error integrates to 80 fs (rms) for a dynamic range of 95 dB with no calibration required. The 157 times 258 mum TDC is realized in 0.13 mum CMOS and, depending on the time difference between input edges, consumes 2.2 to 21 mA from a 1.5 V supply.
Keywords
analogue-digital conversion; digital phase locked loops; noise; oscillators; GRO-TDC; current 2.2 mA to 21 mA; differential nonlinearity; digital PLL; first-order noise shaping; multi-path gated ring oscillator; time-to-digital converter; voltage 1.5 V; Charge pumps; Clocks; Digital circuits; Digital filters; Frequency synthesizers; Linearity; Noise shaping; Phase locked loops; Ring oscillators; Signal generators; Noise-shaping; phase detector; quantizer; ring oscillator; time-to-digital converter;
fLanguage
English
Journal_Title
Solid-State Circuits, IEEE Journal of
Publisher
ieee
ISSN
0018-9200
Type
jour
DOI
10.1109/JSSC.2009.2014709
Filename
4804998
Link To Document