Title :
A no-trimming SLIC two-chip set with coin telephone signaling facilities
Author :
Akata, Masao ; Nagataki, Yuichiro ; Koyabu, Kunihiro ; Mukai, Kanji ; Yoshida, Shinji ; Ueki, Isamu
Abstract :
A subscriber line interface circuit (SLIC) two-chip set is presented. It eliminates off-chip function trimming and contains integrated coin telephone set facilities and BORSCHT functions. The set consists of: (a) the subscriber interface LSI, a 320-V dielectrically isolated bipolar LSI with on-chip thin-film resistors and double-layer metal; and (b) the subscriber processor LSI, a 1.6 μm CMOS LSI with oversampling A-D/D-A converters and a microprogrammable digital signal processor. The chip sizes are 5.5 mm×6.06 mm and 6.0 mm×5.7 mm, respectively. With the two-chip set, a SLIC for coin telephone set interface can be established without high-precision filter components or hybrid ICs with their function trimming
Keywords :
CMOS integrated circuits; bipolar integrated circuits; digital signal processing chips; large scale integration; signalling (telecommunication networks); subscriber loops; telephone station equipment; 1.6 micron; 320 V; BORSCHT functions; CMOS LSI; DSP chip; SLIC; coin telephone signaling facilities; dielectrically isolated bipolar LSI; double-layer metal; microprogrammable digital signal processor; monolithic ICs; oversampling A/D convertor; oversampling D/A convertor; subscriber interface LSI; subscriber line interface circuit; subscriber processor LSI; trimming-free design; two-chip set;
Conference_Titel :
Custom Integrated Circuits Conference, 1989., Proceedings of the IEEE 1989
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/CICC.1989.56771
