AG8889N

AG8889 CALL WAITING DECODER I. GENERAL DESCRIPTION This is a new version of Call Waiting service decoder on the telephone. Call Waiting service works by alerting a customer engaged in a telephone call to a new incoming call. This way the customer can still receive important calls while engaged in a current call. The Call Waiting decoder can detect dual tone (2130Hz and 2750Hz) alert signal and generate a valid signal on the data pins for micro controller. II. FEATURES Compatible with Bellcore special report SR-TSV-002476 3.6V ~ 6.0V supply voltage Call-Waiting (2130Hz plus 2750Hz) Alert Signal Detector Good talkdown and talkoff performance Sensitivity compensated by adjusting input OP gain Package series --- 14-pin DIP or 16-pin SOP (150 mil) AG8889AP for 14-pin DIP AG8889N for 16-pin SOP (150 mil) III. APPLICATION Feature phones Cordless phones Adjunct unit (stand alone) IV. PIN CONFIGURATION AG8889AP TIP RING OPO VREF NC PWD VSS 1 2 3 4 5 6 7 14 13 12 11 AG8889N VDD DO NC NC NC OSCI OSCO TIP RING OPO VREF NC PWD VSS NC 1 2 3 4 5 6 7 8 16 15 14 13 VDD DO NC NC NC OSCI OSCO NC 10 9 8 12 11 10 9 * This specification are subject to be changed without notice. 8.8.2000 1 AG8889 CALL WAITING DECODER V. FUNCTIONAL BLOCK DIAGRAM OPO TIP RING Tone Filter Detection Block DO VREF Vdd/2 Voltage Reference Clock Generator OSCI OSCO PWD VI. PIN DESCRIPTIONS Pin TIP RING OPO VREF PWD I/O I I O I Description Tip in should be connected with twisted...