8CH Single Input Full-Spectrum Capture Satellite Receiver
Product Brief


The MxL581C is a low-power single-chip satellite receiver IC, featuring an L-band Full-Spectrum Capture® (FSC®) tuner and eight demodulators that are compliant with DVB-S, DVB-S2, and DIRECTV legacy standards.

The MxL581C receives signals from the L-band differential RF input from 950 MHz to 2150 MHz, and demodulates eight satellite channels to produce eight independent serial TS outputs. All eight TS outputs support two-wire, three-wire, or four-wire modes.

The MxL581C communicates with satellite LNBs through on-chip DiSEqC and FSK modems.

All major functions are incorporated onto the device, including LNA, channel filters, AGC, adaptive equalizers, PLLs, crystal load capacitors, and demodulators. The MxL581C enables simple, compact board designs with low-power consumption and reduced BOM costs. The MxL581C is controlled via an I2C interface, and operates using 1.8V and 1.1V core supplies and an I/O supply of 3.3V. The MxL581C is available in a small 10 mm x 10 mm footprint 72-pin QFN package.


  • Ultra low power
  • Symbol rates of:
    • 1MSps to 45MSps in DVB-S and DVB-S2 modes
    • 20MSps to 30MSps in DIRECTV legacy mode
  • DIRECTV full transponder loading compliant
  • Broadcast wake-up
  • Conversion from DIRECTV legacy packets to standard DVB-S/DVB-S2 TS packets
  • Single-channel or Network Tuner mode
  • Integrated LNA
  • Differential RF input
  • Channel spectrum analysis data available through I2C
  • On-chip programmable crystal load capacitors to reduce external components
  • Coexistence with MoCA, LTE, and WiFi
  • Automatic channel acquisition
  • Auto-detection and auto-correction of spectral inversion
  • Eight serial TS output ports, configurable in two-wire, three-wire, or four-wire modes
  • PID filtering and output TS multiplexing with two, four, or eight TS outputs
  • Unicable, EN50494:2007 and EN50607:2013 standards, and SWM single-cable LNB distribution
  • DiSEqC 2.2 two-way LNB control interface and FSK modem
  • I2C compatible interface


Contact Sales to request additional information.


  • Set-top boxes (STBs)
  • Residential gateways
  • SAT>IP multi-switch
  • IP-LNB

Design Tools


Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Buy Now Order Samples
MxL581C-AK-R 0 70 Active
MxL581C-AK-T 0 70 Active
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Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.

Quality & Environmental Data

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.