Title :
ISDN U transceiver analog front-end
Author :
Van Bavel, Nicholas ; Rybicki, Mathew ; Greaves, Carlos ; Valentine, Bill ; Jackson, Spence
Author_Institution :
Motorola Inc., Austin, TX, USA
Abstract :
The transmit and receive analog sections of a single-chip U transceiver implemented in a 1.2-μm CMOS process are presented. A sigma-delta A/D converter achieves 87 dB S/(N+D) pk/rms. A bandgap reference, D/A, switched-capacitor filter, buffer, and line driver implement the transmit path that meets the pulse, spectral, and linearity requirements specified by T1E1. All analog circuits are implemented using fully differential techniques and are designed to meet performance specifications without any production trimming or calibration
Keywords :
CMOS integrated circuits; ISDN; application specific integrated circuits; transceivers; 1.2 micron; CMOS; D/A; ISDN U transceiver analog front-end; S/(N+D); T1E1; analog circuits; analog sections; bandgap reference; buffer; differential techniques; line driver; sigma-delta A/D converter; single-chip U transceiver; switched-capacitor filter; Analog circuits; CMOS process; Delta-sigma modulation; Driver circuits; Filters; ISDN; Linearity; Photonic band gap; Production; Transceivers;
Conference_Titel :
Custom Integrated Circuits Conference, 1990., Proceedings of the IEEE 1990
Conference_Location :
Boston, MA
DOI :
10.1109/CICC.1990.124717
