A 1.57mW 99dBΩ CMOS transimpedance amplifier for VHF micromechanical reference oscillators
作者： Ming-Huang Li , Cheng-Syun Li , Li-Jen Hou , Yu-Chia Liu , Sheng-Shian Li
DOI: 10.1109/ISCAS.2012.6271695
关键词:
摘要: This work investigates a low-power transimpedance amplifier (TIA) topology suited for VHF micromechanical oscillator applications. The TIA circuit comprises of regulated-cascode (RGC) gain stage and an inverter-based wideband Cherry-Hooper with capacitive peaking. was designed using TSMC 0.18µm CMOS technology, exhibiting mid-band 99dBµ 3dB bandwidth 280MHz while dissipating only 1.57mW from 1.5V supply. A linear RLC equivalent model extracted practical 48MHz Lame-mode resonator Q>40,000 interfaced the in series-resonant configuration, showing simulated phase-noise less than −128dBc/Hz at 1kHz offset.
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