MAX2472:500MHz to 2500MHz, VCO Buffer Amplifiers

High Reverse Isolation Buffer Amplifier

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)
titleDownload file
MAX2472-MAX2473?Data SheetMAX2472-MAX2473.pdf
Part NumberLO Driver OutputsPLL Driver OutputsRF Freq.
RF Freq.
(mm x mm)
minmaxminmaxSee Notes
MAX2472YesYes5002500-10-22.7 to x 2.9SOT/6$1.43 @1k
MAX24732.7 to 4.8SOT/6
Design kits & evaluation modules
Related Products
  • MAX2471:10MHz to 500MHz, VCO Buffer Amplifiers with Differential Outputs
  • MAX2470:10MHz to 500MHz, VCO Buffer Amplifiers with Differential Outputs
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX2472EUTNo Longer AvailableMAX2472EUT+SOT,;6 pin;9 mm?-40°C to +85°CNo
MAX2472EUT+ActiveSOT,;6 pin;9 mm?-40°C to +85°CLead Free
MAX2472EUT+TActiveSOT,;6 pin;9 mm?-40°C to +85°CLead Free
MAX2472EUT-TNo Longer AvailableMAX2472EUT+TSOT,;6 pin;9 mm?-40°C to +85°CNo
MAX2472-MAX2473.pdf MAX2473
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