Title :
Noise in instantaneous companding filters
Author :
Punzenberger, Manfred ; Enz, Christian C.
Author_Institution :
Electron. Lab., Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
The noise performance of instantaneous companding filters in the presence of a low frequency input signal is investigated. Log-domain integrators are taken as examples for more detailed considerations. 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; analogue processing circuits; compandors; integrated circuit noise; integrating circuits; low-pass filters; 3rd-order Chebyshev filter; BiCMOS implementation; instantaneous companding filters; log-domain integrators; low frequency input signal; noise performance; Capacitors; Frequency; Laboratories; Laplace equations; Leg; Low pass filters; Low-frequency noise; Noise cancellation; Signal to noise ratio; Voltage;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.608731
