Title :
A high gain-bandwidth product transimpedance amplifier for MEMS-based oscillators
Author :
Nabki, F. ; El-Gamal, M.N.
Author_Institution :
McGill Univ., Montreal, QC
Abstract :
A variable gain differential transimpedance amplifier (TIA) optimized for MEMS-based oscillator applications is presented. The TIA achieves a variable gain of 17 kOmega to 290 kOmega, i.e. a gain range of 25 dB. The 3-dB bandwidths corresponding to these gains are 256 MHz and 103 MHz, respectively. The suitability of the TIA for the targeted application is demonstrated by combining it with a MEMS resonator to create an oscillator at the frequency of 8.29 MHz, with a phase noise of -89 dBc/Hz at a 1 kHz offset frequency.
Keywords :
CMOS analogue integrated circuits; differential amplifiers; micromechanical devices; operational amplifiers; oscillators; radio applications; resonators; MEMS resonator; MEMS-based oscillators; frequency 8.29 MHz; gain 25 dB; high gain-bandwidth product transimpedance amplifier; variable gain differential transimpedance amplifier (TIA); CMOS technology; Differential amplifiers; Electrostatics; Frequency; Gain; Micromechanical devices; Oscillators; RLC circuits; Transducers; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2008. ESSCIRC 2008. 34th European
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-2361-3
Electronic_ISBN :
1930-8833
DOI :
10.1109/ESSCIRC.2008.4681890
