SA2532P Datasheet | Sames

sames SA2532P ONE MEMORY SINGLE CHIP TELEPHONE Key Features - - - - - - - - - - - - - - - - Speech Circuit, LD/MF Dialler and Tone Ringer on one 28 pin CMOS chip Low Noise 31 digit Last Number Redial Line Loss pensation selectable by pin option 2 Timed Break Recall keys Moving Cursor protocol with parison On chip MF filter (CEPT CS 203 patible) Pause key for auto pause or wait function Power down mode Ring frequency discrimination Selectable Loop-Disconnect or DTMF dialling modes Real or plex impedance programmable Soft Clipping to avoid harsh distortion Uses inexpensive 3.58MHz ceramic resonator Operating range from 13 to 100 m A 3 Tone melody generator General Description The SA2532P 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. Soft switch into temporary MF mode using - when LD mode is selected .Timed Break Recall will be available in both LD and MF dialling modes. A 31 digit Last Number Redial (LNR) memory, with moving cursor protocol, activated by single key depression. Line Loss pensation whereby send and receive gains are adjusted (by 6d B) over the ranges selected by the LLC pin. Block Diagram 5M1 hook 2K2 Off On 4 x 1N4004 BSS92 300 6K 680n La 30 12V Lb 100K 10 + 1u CI LS STB RI + 10u AGND 220K 150K 2N5551 + 2K2 1M Off...