Title :
A 20-Msample/s switched-capacitor finite-impulse-response filter using a transposed structure
Author :
Rothenberg, Bret C. ; Lewis, Stephen H. ; Hurst, Paul J.
Author_Institution :
Solid-State Circuits Res. Lab., California Univ., Davis, CA, USA
fDate :
12/1/1995 12:00:00 AM
Abstract :
A programmable four-tap analog finite-impulse-response filter for use in a decision-feedback equalizer has been realized in a 2-μm double-poly CMOS process. It uses a modified transposed structure and double sampling to minimize power dissipation. Also, it uses programmable-gain sample-and-hold amplifiers with a constant feedback factor, input capacitance, and load to reduce the performance variation as a function of programming. The filter is fully differential, occupies an active area of 11.8 mm2, and dissipates 56.5 mW
Keywords :
CMOS analogue integrated circuits; FIR filters; decision feedback equalisers; programmable filters; switched capacitor filters; 2 micron; 56.5 mW; constant feedback factor; constant input capacitance; decision-feedback equalizer; double sampling; double-poly CMOS process; finite-impulse-response filter; fully differential type; programmable four-tap analog filter; programmable-gain S/H amplifiers; sample/hold amplifiers; switched-capacitor FIR filter; transposed structure; CMOS process; CMOS technology; Capacitance; Decision feedback equalizers; Finite impulse response filter; Magnetic separation; Operational amplifiers; Power dissipation; Prototypes; Sampling methods;
Journal_Title :
Solid-State Circuits, IEEE Journal of
