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SA2532P Datasheet(PDF) 1 Page - Sames |
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SA2532P Datasheet(HTML) 1 Page - Sames |
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1 / 21 page  DAT_SH05 PDS039-SA2532P-001 Rev. B 21-03-00 sames sames sames sames 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 Compensation selectable by pin option • 2 Timed Break Recall keys • Moving Cursor protocol with comparison • On chip MF filter (CEPT CS 203 compatible) • Pause key for auto pause or wait function • Power down mode • Ring frequency discrimination • Selectable Loop-Disconnect or DTMF dialling modes • Real or complex impedance programmable • Soft Clipping to avoid harsh distortion • Uses inexpensive 3.58MHz ceramic resonator • Operating range from 13 to 100 mA • 3 Tone melody generator Block Diagram 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 Compensation whereby send and receive gains are adjusted (by 6dB) over the ranges selected by the LLC pin. KEYPAD MODE_OUT AGND RI STB LS LI CS DD V MO SS V FC1 HS/DP LLC OSC C1 C2 C3 C4 R1 R2 R3 R4 M2 M1 RO2 RO1 MUTE SA2532P DIALER CLIP SOFT SENSE CURRENT LINE Line Adaption Power Extraction DC Mask GENERATOR TONE SEQUENCER MELODY RAM OSC LOGIC CONTROL DISCRIMINATION FREQUENCY RING DD V + + + + + MODE La Lb 680n 5M1 2K2 20 100K 12V BSS92 220K 150K 1M 10 BC327 30 300 1u 6K CI 10u 510 100K 1N4148 330K 10u 18V 12V 330K 220K 10n 5V1 470u Ringer 1K 2K2 1K8 100u 1K8 10n 10n 3.58MHz 2N5551 BC547B 4 x 1N4004 On Off Off On SA2532P ONE MEMORY SINGLE CHIP TELEPHONE |
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