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AD9863:  12-Bit Mixed-Signal Front-End (MxFE® )Processor For Broadband Applications

Product Details

The AD9863 is a member of the MxFE® family, a group of integrated converters for the communications market. The AD9863 includes dual 12-bit Analog-to-Digital Converters (ADCs) and dual 12-bit Digital to Analog Converters (TxDAC® converters). A -50 speed grade is available. The -50 is optimized for ADC sampling of 50 MSPS and less. The dual TxDAC converters operate at speeds up to 200 MHz and includes a bypassable 2x or 4x interpolation filter. All devices are optimized for low power, small form factor and provide a cost effective solution for the broadband communication market.

The AD9863 utilizes two independent input clocks input for controlling all system clocks. The ADC sampling rate is controlled by the CLKIN1 input. The DAC sampling rate is controlled by the CLKIN2 input and a Phase-Lock-Loop clock multiplier.

A Flexible bi-directional 24-bit I/O bus is used to accommodate a variety of custom digital back ends or open market DSPs. In half duplex systems, the interface supports 24-bit parallel transfers or 12-bit interleaved transfers. In Full duplex systems, the interface supports an interleaved 12-bit ADC bus and an interleaved 12-bit Tx bus. The Flexible I/O bus reduces pin count and therefore required package size.

The AD9863 can use either mode pins or a serial programmable interface (SPI) to configure the interface bus, operate the ADC in a low power mode, configure the TxDAC converter interpolation rate, control the ADC power down and TxDAC converter power down. The SPI allows for more programmable options for both the TxDAC path (for example, coarse and fine gain control, offset control for channel matching) and ADC path (for example, internal duty cycle stabilizer, 2's complement data format).

The AD9863 is packaged in a 64-pin lfCSP package (low profile, fine pitch chip scale package). The 64-pin lfCSP package footprint is only 9 mm by 9 mm and is less than 0.9 mm high fitting into tightly spaced applications such as PCMCIA cards.


  • Broadband Access
  • Broadband LAN
  • Communications (Modems)


  • Receive Path Includes Dual 12-Bit Analog-To-Digital Converters with Internal or External Reference, 50 MSPS Version
  • Transmit Path Includes Dual 12-Bit, 200 MSPS Digital-To-Analog Converters with 1x, 2x, Or 4x Interpolation and Programmable Gain Control
  • Internal Clock Distribution Block Includes a Programmable Phase-Locked Loop and Timing Generation Circuitry Allowing Single or Dual Reference Clock Operation
  • 24 Bit Flexible I/O Data Interface Allow Various Interleaved or Non-Interleaved Data Transfers in Half-Duplex Mode and Interleaved Data Transfers in Full-Duplex Mode
  • Configurable Through SPI Compliant Port or MODE Selection Pins
  • Independent Rx and Tx Converter Powerdown Control Pins
  • 64 Lead LFCSP Package
    (9 mm x 9 mm Footprint

Functional Block Diagram for AD9863

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Title Content Type File Type
AD9863: 12-Bit Mixed-Signal Front-End (MxFE™) Baseband Transceiver For Broadband Applications Data Sheet  (Rev A, 04/2005) (pdf, 991 kB) Data Sheets PDF
AN-928: Understanding High Speed DAC Testing and Evaluation  (pdf, 4445 kB) Application Notes PDF
AN-808: Multicarrier CDMA2000 Feasibility  (pdf, 1535 kB)
The goal of this application note is to determine the feasibility of implementing a multicarrier CDMA2000 transceiver and what the major subsystem performances must be.
Application Notes PDF
AN-851: A WiMax Double Downconversion IF Sampling Receiver Design  (pdf, 262 kB) Application Notes PDF
EE-236: Real-Time Solutions Using Mixed-Signal Front-End Devices with the Blackfin® Processor  (pdf, 149 kB) Application Notes PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Analog Front End for 3G Femto Base Stations Bring Wireless Connectivity Home Analog Dialogue HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD9863 IBIS Models IBIS Models HTML

Evaluation Kits & Symbols & Footprints

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

Model Description Price RoHS View PCN/ PDN Check Inventory/
AD-DAC-FMC-ADP Status: Production FMC to High-Speed DAC Evaluation Board Adaptor $125.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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