Title :
A monolithic 50 kHz 16-bit A/D-D/A converter using sigma-delta modulation
Author :
Thompson, Charles D. ; D´Angelo, Kevin ; Chua-Eoan, Lew ; Early, Adrian ; Korak, A. ; Park, Sangil
Author_Institution :
Motorola Inc., Austin, TX, USA
Abstract :
The converter consists of a third-order sigma-delta modulator, comb and finite impulse response (FIR) filters, a digital noise shaper, and a sixth-order switched-capacitor filter. The converter operates on a single +5-V supply and uses serial I/O to maintain a low pin count. The serial interface allows up to four devices to be connected, thus providing four channels of coherently sampled A/D and D/A I/O. High-level software modeling was used to simulate the system signal-to-noise performance, thereby providing design goal verification
Keywords :
analogue-digital conversion; delta modulation; digital filters; digital-analogue conversion; switched capacitor filters; A/D convertor; D/A convertor; coherently sampled; comb filter; design goal verification; digital noise shaper; finite impulse response; serial I/O; serial interface; sigma-delta modulation; signal-to-noise performance; sixth-order switched-capacitor filter; third-order sigma-delta modulator; Delta-sigma modulation; Digital filters; Digital modulation; Finite impulse response filter; Interpolation; Low pass filters; Multi-stage noise shaping; Noise shaping; Phase change materials; Quantization;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112239
