A low power, wide range VCO with automatic amplitude calibration loop

Author

Kim, Sangwoo ; Park, JoonSung ; Pu, YoungGun ; Lee, Kang Yoon

Author_Institution

Dept. of Electron. Eng., Konkuk Univ., Seoul, South Korea

fYear

2009

fDate

20-23 Oct. 2009

Firstpage

455

Lastpage

457

Abstract

This paper presents a low-power VCO with automatic amplitude control loop to compensate for the process, voltage and temperature variation. The settling time of the loop is less than 300 ns in the SS corner case. Adaptive body-biasing (ABB) technique is also adopted to minimize the power consumption by lowering the threshold voltage of transistors in the negative-Gm core. The power consumption is 350 Â¿W and the phase noise at the 1 MHz offset is -117 dBc/Hz when the VCO frequency is 3.2 GHz.

Keywords

power consumption; voltage-controlled oscillators; VCO frequency; adaptive body-biasing technique; automatic amplitude calibration loop; frequency 1 MHz to 3.2 MHz; low-power VCO; negative-Gm core; phase noise; power 350 muW; power consumption; temperature variation; transistor threshold voltage; voltage variation; Automatic control; Calibration; Circuits; Detectors; Energy consumption; Inductors; Phase noise; Tail; Voltage; Voltage-controlled oscillators; VCO; adaptive body biasing; automatic amplitude control loop; low-power;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2009. ASICON '09. IEEE 8th International Conference on

Conference_Location

Changsha, Hunan

Print_ISBN

978-1-4244-3868-6

Electronic_ISBN

978-1-4244-3870-9

Type

conf

DOI

10.1109/ASICON.2009.5351299

Filename

5351299