GENERAL DESCRIPTION

This is a Call Waiting decoder used on the telephone. Call Waiting service works by alerting a customer engaged in a telephone call to a new incoming call. Thus, 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 tone and generate a valid timing on the data pins for micro controller.

FEATURES

• Compatible with Bellcore special report SR-TSV-002476

• 3.6V ~ 6.0V supply voltage

• Call-Waiting (2130Hz plus 2750Hz) alert tone detector

• Sensitivity compensated by adjusting OP Amp

• Internal buffer

• Detection block for alert tone detected and digital algorithm detection

• Package series --- 14-pin DIP or 16-pin SOP (150 mil)

AG8888AP for 14-pin DIP

AG8888N for 16-pin SOP (150 mil)

APPLICATION

Feature phones, cordless phones and stand-alone product