Analog Front End Converter for Set-Top Box, Cable Modem

The AD9873 is a mixed signal front-end developed for broadband communications applications. It includes a complete 12-bit, 232 MSPS digital up-converter, 12-bit ADC, 10-bit ADC, two 8-bit ADCs, and two sigma-delta control DACs. Although it was developed for cable set top box/modem applications, it provides a combination of price and performance characteristics that are ideal for other broadband communication applications such as power line and wireless modems.

Applications

* Cable and Satellite Systems

* PC Multimedia

* Digital Communications

* Data and Video Modems

* Cable Modem

* Set-Top Boxes

* Powerline Modem

* Broadband Wireless Communication

* Low-Cost 3.3 V CMOS Analog Front End Converter for MCNS-DOCSIS,DVB, DAVIC-Compliant Set-Top Box,Cable Modem Applications * 232 MHz Quadrature Digital Upconverter -DC to 65 MHz Output Bandwidth -12-Bit Direct IF D/A Converter (TxDAC+®) -Programmable Reference Clock Multiplier (PLL) -Direct Digital Synthesis -Interpolator -SIN(x)/x Compensation Filter * 12-Bit, 33 MSPS Sampling Direct IF A/D Converter with Auxiliary Automatic Clamp Video Input Multiplexer * 10-Bit, 33 MSPS Sampling Direct IF A/D Converter