SA2531 A/B/C/E/G/U
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FEATURES s Speech circuit, LD/MF Repertory Dialler and Tone Ringer on one 28 pin CMOS chip
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SA2531 A/B/C/E/G/U
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FEATURES s Speech circuit, LD/MF Repertory Dialler and Tone Ringer on one 28 pin
CMOS chip
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SA2531 A/B/C/D/E/F/G/J/U
VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
Operating range from 13 to 100 mA (down to 5 mA with reduced performance) Volume control of receive signalExcept "D") Low noise (max. -72dBmp) Real or Complex impedance on chip programmable LD/MF switchable dialling 14 memories, 4 direct/10 indirect or 10 direct Pause key for 2, 3 or 6 sec Auto Pause or Wait function On chip MF filter (CEPT CS 203 compatible) 3-tone melody generator
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Net 4 compatible Soft clip to avoid harsh distortion Line Loss Compensation selectable by pin option Power down mode Versatile applications for different PTT demands 31 digit last number redial Sliding Cursor protocol with comparison 2 Flash keys, 100 ms and 280 ms (option 600 ms) Ring frequency discrimination
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GENERAL DESCRIPTION The SA2531 is a
CMOS integrated circuit that contains all the functions needed to form a high performance electronic telephone. The device incorporates LD/MF repertory dialling, melody generation, ring frequency discrimination and a high quality speech circuit. A RAM is on chip for a 31 digit last number redial and 14 memories each containing up to 21 digits. The sliding cursor procedure makes Last Number Redial easy behind a PABX. The SA2531 (exept the SA2531D) incorporates a volume control for the earpiece. The receiv...
