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AD9873 Datasheet

Part NameDescriptionManufacturer
AD9873 Analog Front End Converter for Set-Top Box, Cable Modem ADI
Analog Devices ADI
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GENERAL DESCRIPTION
The AD9873 integrates a complete 232 MHz quadrature digital transmitter and a multichannel receiver with four high performance analog-to-digital converters (ADC) for various video and digital data signals. The AD9873 is designed for cable modem set-top box applications, where cost, size, power dissi pation, and dynamic performance are critical attributes. A single external crystal is used to control all internal conversion and data processing cycles.

FEATURES
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
  Four Programmable, Pin-Selectable Modulator Profiles
  Single-Tone Mode for Frequency Synthesis Applications
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
Dual 8-Bit, 16.5 MSPS Sampling IQ A/D Converter
Two Independently Programmable Sigma-Delta Converters
Direct Interface to AD8321/AD8323 PGA Cable Driver
Programmable Frequency Output
Power-Down Modes

APPLICATIONS
Cable and Satellite Systems
PC Multimedia
Digital Communications
Data and Video Modems
Cable Modem
Set-Top Boxes
Powerline Modem
Broadband Wireless Communication

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