Title :
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
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 ¿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;
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
DOI :
10.1109/ASICON.2009.5351299
