Title :
An analog front end for high speed fast turnaround modems
Author :
Halim, R. ; Shamlou, D. ; Illgner, J.
Abstract :
A single-chip analog front end (AFE) for V.32 9600-b/s fast turnaround modems is presented. The AFE mixes analog and digital circuits to achieve a high level of integration of modem front end functions. The AFE integrates 80 poles of switched-capacitor filters for all transmission modes with DSP (digital signal processor) and microprocessor interfaces, 8-bit linear A/D (analog-to-digital) and D/A (digital-to-analog) converters, a channel compromise equalizer, and various other modem front-end functions. The AFE maintains a worst-case 40 dB SNR (signal-to-noise ratio) over a received signal dynamic range of 45 dB. The chip dissipates 300 mW with ±5-V supplies, and occupies 63000 mil2 in a 3-μm double-poly CMOS process
Keywords :
CMOS integrated circuits; application specific integrated circuits; linear integrated circuits; modems; -5 V; 3 micron; 300 mW; 40 dB; 5 V; ADC; ASIC; DAC; DSP interfaces; V.32; analog front end; channel compromise equalizer; converters; double-poly CMOS process; fast turnaround; high speed; microprocessor interfaces; mixed analogue/digital circuits; modems; single-chip; switched-capacitor filters;
Conference_Titel :
Custom Integrated Circuits Conference, 1989., Proceedings of the IEEE 1989
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/CICC.1989.56767
