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AD1803

Analog Devices
Part Number AD1803
Manufacturer Analog Devices
Description U.S./International Modem DAA Line Codec Chipset
Published Mar 23, 2005
Detailed Description a FEATURES Low Power Modem Codec AD1803 and Silicon DAA AD1804 AD1803 Can Be Used as a Stand-Alone Modem/Voice/ Telephon...
Datasheet PDF File AD1803 PDF File

AD1803
AD1803

Overview
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.
The AD1803 is an Intel AC’97 Rev 2.
1-compliant modem codec (refer to Intel’s AC’97 specifications at www.
intel.
com) with selectable AC’97 or a DSP-style serial interface.
The AD1803 codec uses high-performance sigma-delta ADC and DACs with programmable gain/attenuation.
It has a digital monitor output with selectable mix from ADC and DAC channels for call progress monitoring.
The AD1803 supports ring validation and wake-up interrupt output signalling.
The AD1803 has programmable filters dedicated to...


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