DocumentCode
439428
Title
A two-bit Δ Σ-modulator with 83dB SNDR for digital cellular telephones
Author
Lindfors, S. ; Lansirinne, M. ; Lindeman, T. ; Halonen, K.
Author_Institution
Helsinki University of Technology, Espoo, Finland
fYear
1999
fDate
21-23 Sept. 1999
Firstpage
334
Lastpage
337
Abstract
The design of a two-bit 2nd order ΔΣ-modulator with 83.3dB peak SNDR and 52MHz sampling frequency is presented. The modulator employs a two-bit internal quantization to reduce the slewing requirements of the amplifiers. The nonlinearity of the internal multibit DACs is reduced with dynamic element matching. Both cyclic and random selection algorithms were implemented for comparison purposes. The modulator operates on a 2.7V supply voltage, consumes 23mW power and is targeted for radio receivers with digital channel selection.
Keywords
Band pass filters; Capacitors; Energy consumption; Feedback; Frequency; Noise shaping; Passive filters; Quantization; Sampling methods; Telephony;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 1999. ESSCIRC '99. Proceedings of the 25th European
Conference_Location
Duisburg, Germany
Type
conf
Filename
1471164
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