Title :
Noise in high-order log-domain filters
Author :
Punzenberger, Manfred ; Enz, Christian C.
Author_Institution :
Electron. Lab., Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
The noise performance of high-order log-domain filters in the presence of an input signal is investigated. It is shown that class AB log-domain filters behave like distributed companding systems. The results are extended to a 3rd-order Chebyshev filter and are in good agreement with measurements of a BiCMOS implementation
Keywords :
BiCMOS analogue integrated circuits; Chebyshev filters; active filters; compandors; BiCMOS implementation; class AB filters; distributed companding systems; high-order log-domain filters; input signal; third-order Chebyshev filter; Capacitors; Circuits; Equations; Laboratories; Leg; Low pass filters; Semiconductor device noise; Signal to noise ratio; Transconductance; Voltage;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704428
