500MHz to 2500MHz, VCO Buffer Amplifiers

High Reverse Isolation Buffer Amplifier

Please check latest availability status for a specific part variant.


The MAX2472/MAX2473 are flexible, wideband, high- reverse-isolation buffer amplifiers. The MAX2472 has dual open-collector outputs capable of delivering -5dBm into 50Ω while maintaining harmonic suppression below -25dBc. The MAX2473 has a single open-collector output with a bias control pin to vary output power from -10dBm to -2dBm while maintaining harmonic suppression below -25dBc. The MAX2472/MAX2473's combination of high reverse isolation and low supply current makes them ideal for applications requiring high performance with low power. They feature high input impedance and open-collector outputs for maximum flexibility, enabling them to be used with a variety of oscillator topologies.

Both the MAX2472 and MAX2473 operate from a single +2.7V to +5.5V supply. With VCC = +3.0V and -25dBm input power, the MAX2472 consumes 5.2mA, while the MAX2473 consumes only 2.7mA. Both devices are available in a tiny 6-pin SOT23 package requiring minimal board space.

Key Features

  • +2.7V to +5.5V Supply Range
  • 500MHz to 2500MHz Input Frequency Range
  • High Reverse Isolation: 49dB at 900MHz
  • Dual Open-Collector Outputs (MAX2472)
  • Adjustable -10dBm to -2dBm Output Power Control (MAX2473)
  • High Input Impedance: >250Ω at 900MHz
  • Ultra-Small SOT23-6 Package


  • Cellular and PCS Mobile Phones
  • General-Purpose Buffers/Amplifiers
  • IF/RF Oscillators
  • ISM-Band Applications
  • Private Mobile Radios (PMRs)

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.

MAX2472EVKIT: Evaluation Kit for the MAX2472, MAX2473
MAX2473EVKIT: Evaluation Kit for the MAX2472, MAX2473

Tools & Models

  • MAX2472 S-Parameter File
  • Request Reliability Report for: MAX2472 
    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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