DocumentCode :
80956
Title :
A 0.1–1.5 GHz 8-bit Inverter-Based Digital-to-Phase Converter Using Harmonic Rejection
Author :
Ming-Shuan Chen ; Hafez, Amr Amin ; Chih-Kong Ken Yang
Author_Institution :
Univ. of California, Los Angeles, Los Angeles, CA, USA
Volume :
48
Issue :
11
fYear :
2013
fDate :
Nov. 2013
Firstpage :
2681
Lastpage :
2692
Abstract :
This paper presents a digital-to-phase converter (DPC) with 8-bits of resolution and a wide frequency range for the input/output clocks. A harmonic rejection (HR) filter is introduced to improve linearity across a frequency range of 0.1-1.5 GHz. Instead of using time-domain averaging of phase interpolators (PI) in a conventional DPC, the frequency-domain filter directly cancels the 3rd- and 5th-order harmonics of the phase interpolated signal. The architecture is designed using an inverter-based PI circuit structure to improve power consumption and area. The inverter nonlinearity is improved using resistive averaging. The residual INL and DNL are further reduced by nonlinear weighting of the interpolation. Designed and fabricated in 65-nm CMOS technology, the DPC demonstrates a maximum INL and DNL of 1.33 and 0.52 LSB while consumes a power of 4.3 mW and occupies 0.06 mm2 area.
Keywords :
CMOS integrated circuits; invertors; phase convertors; CMOS technology; frequency 0.1 GHz to 1.5 GHz; frequency-domain filter; harmonic rejection; input/output clocks; inverter nonlinearity; inverter-based digital-to-phase converter; inverter-based phase interpolators circuit structure; nonlinear weighting; power 4.3 mW; power consumption; resistive averaging; size 65 nm; word length 8 bit; Band-pass filters; Clocks; Frequency response; Harmonic analysis; Linearity; Noise; Power harmonic filters; Clock and data recovery (CDR); digital-to-phase converter (DPC); harmonic rejection (HR) filter; phase interpolator (PI);
fLanguage :
English
Journal_Title :
Solid-State Circuits, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9200
Type :
jour
DOI :
10.1109/JSSC.2013.2274892
Filename :
6578156
Link To Document :
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