A low power digital controlled oscillator

Chan, Cheong F.; Choy, Oliver C.S.

doi:10.1080/00207210110037268

Cited by 6 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…B n =1 if switch is on, and B n = 0 if switch is off. It was also explained before that output frequency is controlled by changing I D in the proposed DCO as it provides high linearity for a very wide tuning range in comparison to the change in load capacitance as earlier employed in [4].…”

Section: B Tristate Inverter Dco Cellmentioning

confidence: 93%

“…One of the advantages of the proposed method is that it provides symmetrical load unlikely in ref. [3][4][5]. The output frequency of the oscillator depends on the control bits.…”

Section: A Topology Of Dcomentioning

confidence: 99%

“…In Ref. [4], [5], digital control but asymmetrical stages were used which reduces the output voltage swing that makes the circuit sensitive to the phase noise. In Ref.…”

Section: Introductionmentioning

confidence: 99%

“…This architecture provides symmetrical load, high linearity and very large output voltage swing which overcomes the problem of Ref. [4], [5]. The output frequency of the DCO is controlled by the varying the driving current according to the input control bits.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design of Highly Linear, 1GHz 8-bit Digitally Controlled Ring Oscillator with Wide Tuning Range in 0.18um CMOS Process

Pokharel

Tomar

Kanaya

et al. 2008

2008 China-Japan Joint Microwave Conference

View full text Add to dashboard Cite

This paper presents a simple architecture for 8-bit digital controlled oscillator (DCO) on 3-stages ring topology in TSMC 0.18um CMOS technology. A new schematic of tristate inverter is also proposed. The proposed tristate inverter has higher switching speed and low power consumption as compared to conventional one. The control digit changes the driving current that provides large tuning range from 316 MHz to 1165 MHz with very good linearity. The output voltage swing is always greater than 1.6V while the supply voltage is 1.8V. The proposed DCO has simulated phase noise of-114dBc/Hz @1MHz and 23.2mW power consumption at 1.0 GHz central frequency.

show abstract

Section: B Tristate Inverter Dco Cellmentioning

confidence: 93%

“…One of the advantages of the proposed method is that it provides symmetrical load unlikely in ref. [3][4][5]. The output frequency of the oscillator depends on the control bits.…”

Section: A Topology Of Dcomentioning

confidence: 99%

“…In Ref. [4], [5], digital control but asymmetrical stages were used which reduces the output voltage swing that makes the circuit sensitive to the phase noise. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations