Title :
A 2.7-V, 200-kHz, 49-dBm, stopband-IIP3, low-noise, fully balanced gm-C filter IC
Author :
Itakura, Tetsuro ; Ueno, Takashi ; Tanimoto, Hiroshi ; Yasuda, Akira ; Fujimoto, Ryuichi ; Arai, Tadashi ; Kokatsu, Hideyuki
Author_Institution :
Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan
fDate :
8/1/1999 12:00:00 AM
Abstract :
This 2.7 V low-distortion, low-noise, fourth order gm-C filter adopts real resistors for terminations and transconductors of wide common mode input range. Degradation in passband ripple due to mismatch between termination resistors and transconductors is alleviated by design centering. The filter achieves a stopband third-order intermodulation intercept point (IIP3) of 49 dBm, a passband IIP3 of 14 dBm, an input-referred noise of 28 nV/√(Hz) and a common mode rejection ratio of 70 dB. The cutoff frequency is tuned to 200 kHz using a reference resistor. The filter consumes 11.5 mA/channel. It operates even at 2.2 V with a stopband IIP3 of 40 dBm
Keywords :
BiCMOS analogue integrated circuits; Chebyshev filters; circuit tuning; continuous time filters; integrated circuit design; integrated circuit noise; intermodulation distortion; low-pass filters; 2.2 to 2.7 V; 200 kHz; active filter; design centering; fourth order gm-C filter; fully balanced gm-C filter IC; low-distortion filter; low-noise filter; stopband-IIP3 filter; termination resistors; third-order intermodulation intercept point; transconductors; wide common mode input range; Baseband; Capacitance; Capacitors; Frequency; Intermodulation distortion; Low pass filters; Passband; Resistors; Transconductors; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
