Title :
Cellular radio linear codec
Author :
Minogue, Paschal ; Patterson, Stuart ; Wilson, Jim ; Diamondstein, Mark ; Cheung, Gordon
Author_Institution :
Analog Devices, Limerick, Ireland
Abstract :
Designed specifically to satisfy the European cellular radio market, the ADSP28msp02 combines 16-bit A/C, 16-bit D/A with the appropriate anti-aliasing anti-imaging filtering. Fabricated in a VLSI digital process with high linearity poly-poly capacitors, the msp02 contains >100 K transistors in an area >54 K sq. mils with a die aspect ratio allowing the part to be assembled in a 24-pin skinny package while running off a single 5 V supply. Two versions of the linear codec were fabricated and assembled-a monolithic, fully-integrated part and a compound-monolithic, two-chip solution to facilitate investigation into the interaction between the digital and the analog circuitry
Keywords :
VLSI; application specific integrated circuits; cellular radio; codecs; ADSP28msp02; VLSI digital process; anti-aliasing anti-imaging filtering; cellular radio; decoder; die aspect ratio; encoder system; high linearity poly-poly capacitors; linear codec; sigma delta modulation; switched capacitor PGA; switched capacitor filter; Capacitors; Circuits; Decoding; Delta-sigma modulation; Digital filters; Filtering; Land mobile radio cellular systems; Nonlinear filters; Quantization; Speech codecs;
Conference_Titel :
Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CICCAS.1991.184381