General Description

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.

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

Applications

Cellular and PCS Mobile Phones

Private Mobile Radios

ISM-Band Applications

IF/RF Oscillators

General-Purpose Buffers/Amplifiers