Analogue, Mixed Signal, LSI


Fax modem chipsets are highly integrated

2 November 2005 Analogue, Mixed Signal, LSI

The Si2417 and Si2435 ISOmodems are complete two-chip fax modems integrating Silicon Laboratories' proprietary direct access arrangement (DAA) to provide a globally-programmable interface telephone line interface with a high level of integration. Available in two small outline packages, these compact modem solutions eliminate the need for a separate DSP, modem controller, codec, isolation transformer, relays, opto-isolators, clocking crystal and 2-4 wire hybrid. They provide conventional fax formats with connect rates of up to 14 400 bps (Si2417) and 33 600 bps (Si2435) respectively, over the public-switched telephone network. Other features include parallel phone detection, line-in-use monitoring, global caller ID, and high surge immunity.



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