A 1-1 MASH 2-D Vernier Time-to-Digital Converter with 2nd-order noise shaping
Författare
Summary, in English
We use a 2-dimensional (2-D) Vernier gated-ring-oscillator (GRO) time-to-digital-converter (TDC) in a cascade structure (MASH), so that a larger raw quantization step can be allowed without sacrificing the final resolution performance. The 2-D approach effectively reduces the latency time under a large input, while the MASH structure provides a 2nd-order noise shaping that produces a lower in-band quantization noise than in a single-stage GRO TDC. The TDC is simulated in a 65nm CMOS process. With the oversampling ratio (OSR) of 20, an equivalent TDC resolution of 2.48ps is achieved under the raw (Vernier) resolution of 56ps. The latency is less than 1/10 of a Vernier TDC’s for a 3ns input signal.
Avdelning/ar
Publiceringsår
2014
Språk
Engelska
Sidor
1324-1327
Publikation/Tidskrift/Serie
[Host publication title missing]
Länkar
Dokumenttyp
Konferensbidrag
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- GRO
- Vernier
- TDC
- 2-D
- MASH
Conference name
IEEE International Symposium on Circuits and Systems (ISCAS), 2014
Conference date
2014-06-01 - 2014-06-05
Conference place
Melbourne, Australia
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 2158-1525
- ISSN: 0271-4310
- ISBN: 978-1-4799-3431-7