Overview

Features and Benefits

  • 10-300 MHz Input Frequency
  • Baseband (I/Q) Digital Output 
  • 2.7-3.6 Supply Voltage 
  • 10-270 KHz Output Signal Bandwidth 
  • 8 dB SSB NF
  • +1 dBm IIP3 (typ, max. bias)

  • 95 dB Dynamic Range with 12 dB Continous AGC Range Enabled 
  • -18 or -30 dBm max IF Input with AGC Disabled 
  • LO and Clock Sampling Synthesizers 
  • Programmable Decimation Factor, Output Format, AGC, and Synthesizer settings


Product Details

The AD9874 is a general purpose IF subsystem that digitizes a low level 10-300MHz IF input signal with a bandwidth of up to 270 kHz. The signal chain of the AD9874 contains a low-noise amplifier, mixer, a band pass sigma-Delta analog-to-digital converter and a decimation filter with programmable decimation factor. An automatic gain control (AGC) circuit provides the AD9874 with 12 dB of continuous gain adjustment

The high dynamic range and inherent anti-aliasing provided by the bandpass sigma delta converter allows the AD9874 to cope with blocking signals 95 dB stronger than the desired signal. Auxiliary blocks include clock and LO synthesizers in addition to a serial peripheral interface port.

The SPI port programs numerous parameters of the AD9874, thus allowing the device to be optimized for any given application. Programmable parameters include synthesizer divide ratios, AGC attenuation and attack/decay time, received signal strength level, decimation factor, output data format, 16 dB attenuator, and the selected bias currents. The bias currents of the LNA and mixer can be further reduced at the expense of degraded performance for battery-powered applications.

Applications

  • Multimode Narrow-Band Radio Products Analog/Digital UHF/VHF FDMA Receivers TETRA, APCO25, GSM/EDGE
  • Portable and Mobile Radio Products
  • Base Station Applications
  • SATCOM Terminals

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Discussions

AD9874 Discussions

RE: AD9874 PLL loop filters design
9 week(s) ago in RF and Microwave
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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.


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Evaluation Boards Pricing displayed is based on 1-piece.
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.