Title :
A bipolar sampled-data bandpass delta-sigma A/D modulator
Author :
Varelas, Theodore ; Bazarjani, Seyfi S. ; Snelgrove, W. Martin
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada
Abstract :
A second-order bandpass delta-sigma A/D modulator has been implemented in the bipolar subset of a 0.8 μm BiCMOS process. This prototype demonstrates the feasibility of a bipolar-only delta-sigma modulator based on sampled data techniques. The circuit was clocked at 250 MHz and demonstrated a 40dB SNR in a 1 MHz bandwidth for an input signal at 62.5 MHz. The circuit dissipates 350 mW when it operates from a 5 V power supply
Keywords :
BiCMOS integrated circuits; application specific integrated circuits; sampled data circuits; sigma-delta modulation; 0.8 micron; 1 MHz; 250 MHz; 350 mW; 5 V; 62.5 MHz; SNR; clock; delta-sigma A/D modulator; input signal; power supply; sampled data techniques; second-order bandpass modulator; Bandwidth; Circuit noise; Circuit testing; Clocks; Delay; Delta modulation; Digital modulation; Prototypes; Transfer functions; Voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 1996., Proceedings of the IEEE 1996
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3117-6
DOI :
10.1109/CICC.1996.510544
