AS2534 |
RFQ for AS2534 Required Field |
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| Product | Manufacturers | Pack | D/C |
| AS2534 | - | SOP28 | 97+ |
The AS253x 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 line/speech circuit.
A RAM is on chip for a 31 digit last number redial and memories (not AS2534) each containing up to 21 digits/data. The sliding cursor procedure makes the LNR function easy to use under various PABX systems. Also centrex keys (not AS2535) are provided.
The device incorporate a volume control for the earpiece. The volume can be controlled by the VOL key (+ 5.4 dB) or by the /+ keys (+8.1 dB/-5.4 dB in 5 steps).
The versatility of the circuit is provided by pin options and a few external components. This allows easy adaptation to different PTT requirements.
Typical Application |
Features |
| · For application support contact your local sales offices | · Line/speech circuit, LD/MF repertory dialler and tone ringer on one 28 pin CMOS chip· Operating range from 13 to 100 mA (down to 5 mA with reduced performance)· Soft clipping to avoid harsh distortion· Volume control of receive signal· Line loss compensation selectable by pin option· Low noise (max. - 72 dBmp)· Real or complex impedance· NET 4 compatible· LD/MF switchable dialling·Pacifier tone during programming· 31 digit last number redial· Repertory memories (not AS2534), 4 direct/10 indirect (AS2533/6), 12 direct (AS2535)· Repeat dialling by busy or engaged (not AS2535)· Sliding cursor protocol with comparison· Pause key for access pause or wait function· 3 flash keys, 100 ms, 280 ms and 375/600 ms· On chip MF filter (CEPT CS 203 compatible)· Ring frequency discrimination· 3-tone melody generator |
