AD9873: Analog Front End Converter for Set-Top Box, Cable Modem
AD9873 简述
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
AD9873 特点
- 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
- 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
AD9873 功能框图
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