Change search
ReferencesLink to record
Permanent link

Direct link
Multi-Path Dierential Delay Line based Time-to-Digital Converter for ADPLL
KTH, School of Information and Communication Technology (ICT).
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

All digital phase-locked loops (ADPLLs) play an important role in contemporary applications such as Bluetooth, GSM, WCDAM and WiFi. A timeto-digital converter (TDC) is the critical part in the ADPLL, usually the dominant quantization noise contributor. The quantization noise is caused by the nite resolution of the TDC. Thus, a high resolution TDC with easy implementation (digital-friendly) feature is desired for the ADPLL. After the investigation of different existing TDC topologies, an improved TDC based on a multi-path differential delay line is proposed and designed in 65-nm CMOS process. The proposed TDC utilizes the minimal-delay inverter as the delay element and a sense amplifer ip-op as the comparator, which demonstrates high resolution and simple implementation. The TDC contains 60 delay stages and was post-layout simulated with a 25-MHz reference clock and a 4.06-GHz oscillator clock. The power consumption is 1.215-mW from a 1.2-V supply with power saving enabled. The DNL and INL are lower than 0.25 LSB. The typical resolution is around 9-ps, which meet the application spec. The TDC core layout has an area of 201:5  41:5 m2.

Place, publisher, year, edition, pages
2013. , 130 p.
TRITA-ICT-EX, 2013:26
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-124407OAI: diva2:635168
Available from: 2013-07-03 Created: 2013-07-03 Last updated: 2014-10-10Bibliographically approved

Open Access in DiVA

fulltext(12019 kB)545 downloads
File information
File name FULLTEXT01.pdfFile size 12019 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
School of Information and Communication Technology (ICT)
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 545 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 226 hits
ReferencesLink to record
Permanent link

Direct link