Title :
A 100 tap FIR/IIR analog linear-phase lowpass filter
Author :
Qiuting Huang ; Maguire, P.T. ; Burger, T.
Author_Institution :
Integrated Syst. Lab., Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
A 5 kHz linear-phase lowpass filter is implemented in a 2-/spl mu/m BiCMOS technology as a combination of a sigma-delta front-end, a digital shift register, an SC summer circuit of 50 input capacitors and an SC biquad running at a 1 MHz clock. The measured group delay variation in the passband is less than 1 /spl mu/s and the measured THD is -80 dB for an input sine wave amplitude of 0.7 V at 1 kHz.
Keywords :
BiCMOS analogue integrated circuits; FIR filters; IIR filters; biquadratic filters; delay circuits; low-pass filters; sigma-delta modulation; switched capacitor filters; 0.7 V; 2 micron; 5 kHz; BiCMOS technology; FIR/IIR analog linear-phase lowpass filter; SC biquad; SC summer circuit; THD; digital shift register; group delay; sigma-delta front-end; Adders; BiCMOS integrated circuits; Capacitors; Clocks; Delta-sigma modulation; Digital filters; Finite impulse response filter; IIR filters; Propagation delay; Shift registers;
Conference_Titel :
VLSI Circuits, 1995. Digest of Technical Papers., 1995 Symposium on
Conference_Location :
Kyoto, Japan
Print_ISBN :
0-7800-2599-0
DOI :
10.1109/VLSIC.1995.520700
