|کد مقاله||سال انتشار||مقاله انگلیسی||ترجمه فارسی||تعداد کلمات|
|140515||2018||9 صفحه PDF||سفارش دهید||4876 کلمه|
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Microelectronics Journal, Volume 75, May 2018, Pages 119-127
This work assesses the applicability of a compact CMOS current-mode companding integrator in the design of analog continuous-time filters with high linearity. The companding integrator is based on the proportionality between the source transconductances of the input and output MOS transistors and is independent of the inversion level of the devices. The circuit has been designed in CMOS 130â¯nm technology with approximately 90â¯Î¼m2 total active area including biasing elements. According to simulation results the integrator performs a useful frequency bandwidth of up to 4â¯MHz and a third order intermodulation distortion smaller than â47â¯dB for input amplitudes ranging from 100â¯nA to 1â¯Î¼A. The small and large signal responses and the third order intermodulation, among other features, have also been analyzed through simulation for a fourth order low-pass filter and a sixth order bandpass filter. Performance is compared with a CMOS log-domain integrator and filter.