5GHz, 5-Channel MIMO Receiver

High-Performing, Cost-Effective RF Design for Wireless HD Video (WHDI) Enabling Longer Range and Better Video Reception

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The MAX2851 is a single-chip, 5-channel RF receiver IC designed for 5GHz wireless HDMI™ applications. The IC includes all circuitry required to implement the complete 5-channel MIMO RF receiver function and crystal oscillator, providing a fully integrated receive path, VCO, frequency synthesis, and baseband/control interface. It includes a fast-settling sigma-delta RF fractional synthesizer with 76Hz frequency programming step size. The IC also integrates on-chip I/Q amplitude and phase-error calibration circuits. The receiver includes both an in-channel RSSI and also an RF RSSI.

On-chip monolithic filters are included for receiver I/Q baseband signal channel selection, for supporting both 20MHz and 40MHz RF channels. The baseband filtering and Rx signal paths are optimized to meet stringent WHDI requirements. The downconverter local oscillator is coherent among all the receiver channels.

The reverse-link control channel uses an on-chip 5GHz OFDM transmitter. It shares the RF synthesizer and LO generation circuit with the MIMO receivers. Dynamic on/off control of the external PA is implemented with programmable precision voltage. An analog mux routes external PA power-detect voltage to the RSSI pin.

The MIMO receiver chip is housed in a small 68-pin TQFN leadless plastic package with exposed paddle.

Key Features

  • 5GHz, 5x MIMO Downlink Receivers, Single-Uplink IEEE 802.11a Transmitter
  • 4900MHz to 5900MHz Frequency Range
  • Coherent LO Among Receivers
  • 4.5dB Rx Noise Figure
  • 70dB Rx Gain Control Range with 2dB Step Size, Digitally Controlled
  • 60dB Dynamic Range Receiver RSSI
  • RF Wideband Receiver RSSI
  • Programmable 20MHz/40MHz Rx I/Q Lowpass Channel Filters
  • -5dBm Transmit Power (54Mbps OFDM)
  • 31dB Tx Gain Control Range with 0.5dB Step Size, Digitally Controlled
  • Tx/Rx I/Q Error and LO Leakage Detection and Adjustment
  • Programmable 20MHz/40MHz Tx I/Q Lowpass Anti-Aliasing Filter
  • Analog Mux for PA Power Detect
  • PA On/Off Control
  • Sigma-Delta Fractional-N PLL with 76Hz Resolution
  • Monolithic Low-Noise VCO with -35dBc Integrated Phase Noise
  • 4-Wire SPI Digital Interface
  • I/Q Analog Baseband Interface
  • Digital Tx/Rx Mode Control
  • On-Chip Digital Temperature Sensor Readout
  • Complete Baseband Interface
  • Digital Tx/Rx Mode Control
  • +2.7V to +3.6V Supply Voltage
  • Small 68-Pin TQFN Package (10mm x 10mm)


  • 5GHz Beam Steering Receiver
  • 5GHz FDD Backhaul and WiMax™
  • 5GHz MIMO Receiver Up to Five Spatial Streams
  • 5GHz Wireless HDMI (WHDI™)

See parametric specs for RF Transceivers > 1GHz (11)

Part NumberApplicationsDuplex MethodFrequency Range
InputsOutputsTx OIP3 Power
Rx Noise Figure
OFDM4900 to 58755 Rx1 Tx-54.5
1 Rx: 144
5 Rx :367
Tx :183

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX2851EVKIT: Evaluation Kit for the MAX2851
Product Reliability Reports: MAX2851.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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