Title :
A Fully-Differential Class-AB Switched-Current Integrator for Filters and ΣΔ-Modulators
Author :
Koli, Kimmo ; Walliheimo, Jukka ; Halonen, Kari
Author_Institution :
Electronic Circuit Design Laboratory, Helsinki University of Technology, Otakaari 5 A, FIN-02150 Espoo, Finland
Abstract :
A class-AB switched-current integrator is designed with a 1.2 μm CMOS-process which uses a fully differential and complementary topology. With the designed integrator a fast fully-differential 6th order switched-current ladder filter with transmission zeros and a second order fully-differential switched-current ΣΔ-modulator is realized. The low-pass cut-off frequency of the filter is 1 MHz and it has a transmission zeros at approx. 1.5 MHz. Both designed circuits have a 15 MHz clock. Both chips include a differential voltage-to-current converter and the filter also has an output current-to-voltage converter.
Conference_Titel :
Solid-State Circuits Conference, 1994. ESSCIRC '94. Twentieth European
Conference_Location :
Ulm, Germany
Print_ISBN :
2-86332-160-9
