A High Linearity and Fast-Locked PulseWidth Control Loop with Digitally Programmable Output Duty Cycle for Wide Range Operation

Author

Cheng, Kuo-Hsing ; Su, Cia-Wei ; Chang, Kai-Fei ; Hung, Cheng-Liang ; Yang, Wei-Bin

Author_Institution

Dept. of Electr. Eng., National Central Univ., Taoyuan

fYear

2006

fDate

Sept. 2006

Firstpage

178

Lastpage

181

Abstract

In this paper, a high linearity PWCL is proposed. By using the linear control stage and digital-controlled charge pump (DCCP), the proposed PWCL can be operated in wide range of input duty cycle and produced wide range of output duty cycle in wide frequency range. Utilizing simple detect circuit to control DCCP in complementary architecture, the proposed PWCL can reduce lock time ratio to 4.9. The test chip was fabricated in 0.18mum CMOS process. The measurement results show that the frequency range of input signal is from 50MHz to 1.3GHz, the duty cycle range of input signal is from 30% to 70% and the programmable duty cycle of output signal is from 30% to 70% in steps of 5%. The measurement power dissipation and the peak-to-peak jitter are 4.8mW and 13.2ps respectively at an operation frequency of 1.3GHz

Keywords

CMOS integrated circuits; integrated circuit testing; phase locked loops; programmable circuits; 0.18 micron; 13.2 ps; 4.8 mW; 50 to 1.3E3 MHz; CMOS process; digital-controlled charge pump; digitally programmable output duty cycle; fast-locked pulsewidth control loop; high linearity pulsewidth control loop; linear control stage; measurement power dissipation; test chip; CMOS process; Charge pumps; Circuit testing; Digital control; Frequency measurement; Linearity; Power dissipation; Power measurement; Semiconductor device measurement; Space vector pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2006. ESSCIRC 2006. Proceedings of the 32nd European

Conference_Location

Montreux

ISSN

1930-8833

Print_ISBN

1-4244-0303-0

Type

conf

DOI

10.1109/ESSCIR.2006.307560

Filename

4099733