Title :
New impulse sampled IIR switched-capacitor interpolators
Author :
Pan, U. Seng ; Martins, R.P. ; Franca, J.E.
Author_Institution :
Fac. of Sci. & Technol., Macau Univ., Macau
Abstract :
This paper presents new Switched-Capacitor (SC) Infinite Impulse Response (IIR) Interpolators employing an efficient combination of Active-Delayed Blocks (ADB) polyphase structures and recursive direct-form II structures with frequency responses no longer affected by the input sample-and-hold filtering effect. Two different architectures are analysed: the first requires slower Operational Amplifiers (OAs) while the second allows the reduction of the number of clock phases and ADBs (1 OA per ADB). Examples are given to illustrate the behaviour of both types of SC interpolators with arbitrary input signal formats
Keywords :
analogue processing circuits; interpolation; operational amplifiers; sampled data circuits; switched capacitor networks; active-delayed blocks; frequency responses; impulse sampled IIR SC interpolators; infinite impulse response; op amps; operational amplifiers; polyphase structures; recursive direct-form II structures; switched-capacitor interpolators; Circuits; Clocks; Delay; Electronic mail; Filtering; Finite impulse response filter; Frequency; IIR filters; Sampling methods; Transfer functions;
Conference_Titel :
Electronics, Circuits, and Systems, 1996. ICECS '96., Proceedings of the Third IEEE International Conference on
Conference_Location :
Rodos
Print_ISBN :
0-7803-3650-X
DOI :
10.1109/ICECS.1996.582778
