(China (Mainland))
Product Summary
The MT8843AS is a Calling Number Identification Circuit 2 (CNIC2). It is a low power CMOS integrated circuit intended for receiving physical layer signals transmitted according to BT (British Telecom) SIN227 & SIN242, CTA (Cable TV Association) TW/ P&E/312 and Bellcore TR-NWT-000030 & SR-TSV- 002476 specifications. Applications are (1)BT Calling Line Identity Presentation (CLIP), CTA CLIP, and Bellcore Calling Identity Delivery (CID)systems; (2)Feature phones, including Analog Display Services Interface (ADSI)phones; (3)Phone set adjunct boxes; (4)FAX and answering machines; (5)Database query and Computer Telephony Integration (CTI)systems.
Parametrics
MT8843AS absolute maximum ratings: (1)Input leakage current: 1 μA; (2)Input resistance: 10MΩ; (3)Input offset voltage: 25 mV; (4)Power supply rejection ratio: 40 dB 1kHz ripple on VDD; (5)Common mode rejection: 40 dB VCMmin ≤ VIN ≤ VCMmax; (6)DC open loop voltage gain: 32 dB; (7)Unity gain bandwidth: 0.3 MHz; (8)Output voltage swing: 0.5 to VDD-0.5 Vpp; (9)Maximum capacitive load (GS): 100 pF; (10)Maximum resistive load (GS): 50 kΩ; (11)Common mode range voltage: 1.0 to VDD-1.0 V.
Features
MT8843AS features: (1)Compatible with British Telecom (BT)SIN227 & SIN242, Cable Television Association (CTA)TW/P&E/312, and Bellcore TR-NWT-000030 & SR-TSV-002476; (2)Ring and line reversal detection; (3)Bellcore "CPE Alerting Signal (CAS)" and BT Idle State Tone Alert Signal detection; (4)1200 baud BELL 202 and CCITT V.23 Frequency Shift Keying (FSK)demodulation; (5)High input sensitivity; (6)Dual mode 3-wire data interface; (7)Low power CMOS with powerdown mode; (8)Input gain adjustable amplifier; (9)Carrier detect status output; (10)Uses 3.58 MHz crystal or ceramic resonator.
Diagrams
