DocumentCode :
1082948
Title :
An integrated high resolution CMOS timing generator based on an array of delay locked loops
Author :
Christiansen, Jørgen
Author_Institution :
ECP, CERN, Geneva, Switzerland
Volume :
31
Issue :
7
fYear :
1996
fDate :
7/1/1996 12:00:00 AM
Firstpage :
952
Lastpage :
957
Abstract :
This paper describes the architecture and performance of a new high resolution timing generator used as a building block for time-to-digital converters (TDC) and clock alignment functions. The timing generator is implemented as an array of delay locked loops. This architecture enables a timing generator with subgate delay resolution to be implemented in a standard digital CMOS process. The TDC function is implemented by storing the state of the timing generator signals in an asynchronous pipeline buffer when a hit signal is asserted. The clock alignment function is obtained by selecting one of the timing generator signals as an output clock. The proposed timing generator has been mapped into a 1.0 μm CMOS process and an r.m.s. error of the time taps of 48 ps has been measured with a bin size of 0.15 ns. Used as a TDC device, an r.m.s. error of 76 ps has been obtained, A short overview of the basic principles of major TDC and timing generator architectures is given to compare the merits of the proposed scheme to other alternatives
Keywords :
CMOS digital integrated circuits; analogue-digital conversion; delay circuits; timing circuits; 1 micron; CMOS timing generator; DLL array; TDC function; asynchronous pipeline buffer; clock alignment function; clock alignment functions; delay locked loops; high resolution timing generator; standard digital CMOS process; subgate delay resolution; time-to-digital converters; Buffer storage; CMOS process; Clocks; Delay; Pipelines; Signal generators; Signal resolution; Size measurement; Time measurement; Timing;
fLanguage :
English
Journal_Title :
Solid-State Circuits, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9200
Type :
jour
DOI :
10.1109/4.508208
Filename :
508208
Link To Document :
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