Ag1171 Silvertel

V1.6 October 2011 Datasheet Ag1171 Silvertel +3.3V / +5.0V Low Power Ringing SLIC Features PPbb A highly featured low power SLIC in a 14 pin SIL format. Integral high efficiency DC/DC converter. Single supply voltage: +3.3V to +5.0V. Highly integrated with an on-board ringing generator. Tip/Ring polarity reversal. On-Hook Transmission for caller line ID. Suitable for FCT applications. Easy to use, with a minimum number of external components. Simplified protection in on- premise applications. Silvertel design-in assistance Description The Silvertel Ag1171 is a single Subscriber Line Interface Circuit (SLIC) in a 14 pin single in line (SIL) format. The combination of features and packaging offers extremely efficient use of board area, saving significant system size and cost, minimising time to market for Telephony Systems developers. The Ag1171 has been designed to work with loop lengths of typically 1.0km (470R including telephone). The Ag1171 has integral dc/dc converter and ringing generation thus providing all the line powering requirements from a single supply. The Ag1171 requires a minimum of external components, making it ideal for low line count, short loop length applications, such as WLL Terminal (WLL), Fixed Cellular Terminals (FCT), Fixed Wireless Terminals (FWT) and Internet Telephony (VoIP). Silver Telecom 2011 V1.6 October 2011 Ag1171 Data Sheet +3.3V / +5.0V Low Power Ringing SLIC Table of Contents Features...............................................................................................................................1 Description...........................................................................................................................1 1. Ag1171 Product Selector.................................................................................................3 2. Pin Description.................................................................................................................5 3. Functional Description .....................................................................................................6 3.1. Line Interfacing..........................................................................................................6 3.2. Battery Feed..............................................................................................................6 3.3. Ringing......................................................................................................................6 3.4. Power Down and Synchronisation.............................................................................7 3.5. The 2-4 Wire (hybrid) Conversion .............................................................................8 3.6. Transmit and Receive Gain.......................................................................................8 3.7. The 2 Wire Impedance..............................................................................................8 3.8. Network Balance Impedance ....................................................................................8 3.9. Tip & Ring Polarity Reversal .....................................................................................8 3.10. On Hook Transmission............................................................................................8 3.11. Switch Hook Detection ............................................................................................9 4. Protection of the Ag1171 SLIC ......................................................................................10 4.1. Thermal Protection..................................................................................................10 4.2. Overvoltage Protection............................................................................................10 5. Typical Application.........................................................................................................10 6. DC Supply Voltage.........................................................................................................11 7. Layout Considerations ...................................................................................................11 7.1. Power and Ground ..................................................................................................11 8. Electrical Characteristics................................................................................................12 8.1. Absolute Maximum Ratings* ...................................................................................12 8.2. Recommended Operating Conditions*....................................................................12 8.3. DC Electrical Characteristics*..................................................................................13 8.4. AC Electrical Characteristics*..................................................................................14 9. Package.........................................................................................................................15 Table of Figures Figure 1: Block Diagram ......................................................................................................3 Figure 2: Ag1171 Package Format ......................................................................................4 Figure 3: Ringing Signal Waveforms ...................................................................................7 Figure 4: Typical Connection Diagram.................................................................................9 Figure 5: Optional EMI Suppression ..................................................................................11 2 Silver Telecom 2011