AD1803

a FEATURES Low Power Modem Codec AD1803 and Silicon DAA AD1804 AD1803 Can Be Used as a Stand-Alone Modem/Voice/ Telephony Codec Independent of the AD1804 Intel AC’97 Rev 2.1-Compliant Modem Codec Implementation AC’97 or DSP Style Serial Interface Supports all Modem/Fax Standards Including V.90 Software Programmable DAA and Compliant with U.S. and International PTT Standards FCC and CTR21 Approved Capacitively Coupled Clock and Data Interface Across Isolation Barrier Multiple Crystal/Clock Rates Supported Programmable Gain, Attenuation and Mute On-Chip Signal Filters Digital Interpolation and Decimation Filters Analog Output Low Pass U.S./International Modem DAA Line Codec Chipset AD1803/AD1804 Programmable Sample Rates From 6.4 kHz to 16 kHz With 1 Hz, 8/7 Hz and 10/7 Hz Resolution Digital Monitor Speaker Output Integrated Ring Detector and Support for Soft Caller-ID Decode 24-Lead TSSOP Package 0.6 ␮ m CMOS Technology Operation from 3.3 V or 5 V Supply Advanced Power Management Supports Wake-Up on Ring from D3-Cold System State APPLICATIONS Modems (PC and Embedded) Voice and Telephony Fax Machines, Answering Machines, Speakerphones PBX Systems Smart Appliances REFERENCE DESIGN Available PRODUCT OVERVIEW The AD1803/AD1804 chipset allows the implementation of a low-cost full Modem DAA Line Interface and codec with minimal external components. The AD1803 can also be used as a stand-alone codec for voice/handset/telephony applications, or as a cellular telephone interface. Th...