Title :
A Compatible CMOS-JFET Pulse Density Modulator for Interpolative High-Resolution A/D Conversion
Author :
Roettcher, U. ; Fiedler, H.-L. ; Zimmer, G.
Author_Institution :
Fraunhofer Institute for Microelectronic Circuits and Systems, D-4100 Duisburg, Federal Republic of Germany
Abstract :
The analog part of a high-resolution A/D converter has been integrated in a compatible 3-5 ¿m CMOS-JFET technology. The circuit, which forms a pulse density modulator (PDM), can be operated at sample rates up to 12 MHz and reaches a SNR of 84 dB over a baseband of 20 kHz. This corresponds to approximately 14 bit A/D resolution.
Keywords :
Active noise reduction; Clocks; Digital filters; Digital modulation; Noise shaping; Pulse amplifiers; Pulse circuits; Pulse modulation; Pulse width modulation converters; Quantization;
Conference_Titel :
Solid-State Circuits Conference, 1985. ESSCIRC '85. 11th European
Conference_Location :
Toulouse, France
