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KS0825D

·Single supply voltage ring slic: +3.3V to +5.0V

·Integral high efficiency DC/DC converter.

·Built-in dial tone generator and 25Hz ringing frequency.

·Highly integrated with ringing generator.

·Tip/Ring polarity reversal.

·2 / 4 wire conversion

·Constant current feed

·High performance with low price

·Excellent sound quality

·On-Hook Transmission for caller line ID.

·Designed for GSM network

·Easy to use, with a minimum number of external components.

Applications：

·Fixed Cellular Terminals (FCT) applications.

·POS MODEM applications

·Internet Telephony (VoIP) applications.

·Fixed Wireless Terminals (FWT) applications.

·DVB Terminals applications.

·Wireless local loop (WLL) applications.

·GSM gateway

Index：

·unbalanced to ground       60dB(300Hz-3400Hz)

·Two- Wire Impedance       600R

·Four-wire return loss        >24Db

·weighted noise             -75dB

·Ringing voltage             130VP-P

·Constant current            23-31mA

·Supply Voltage             3.2V-5.5VDC