آر اف (فرکانس رادیویی) و بی‌سیم تقویت‌کننده‌ آر اف

Product Attributes

Introduction

The MAX2640/MAX2641 are low-cost, ultra-low-noise amplifiers designed for applications in the cellular, PCS, GPS, and 2.4GHz ISM frequency bands. Operating from a single +2.7V to +5.5V supply, these devices consume only 3.5mA of current while providing a low noise figure, high gain, high input IP3, and an operating frequency range that extends from 300MHz to 2500MHz. The MAX2640 is optimized for 300MHz to 1500MHz applications, with a typical performance of 15.1dB gain, input IP3 of -10dBm, and a noise figure of 0.9dB at 900MHz. The MAX2641 is optimized for 1400MHz to 2500MHz applications, with a typical performance of 14.4dB gain, an input IP3 of -4dBm, and a noise figure of 1.3dB at 1900MHz. These devices are internally biased, eliminating the need for external bias resistors and chokes. In a typical appli­ cation, the only external components needed are a twoelement input match, input and output blocking capaci­ tors, and a VCC bypass capacitor. The MAX2640/MAX2641 are designed on a high-frequen­ cy, low-noise, advanced silicon-germanium process and are offered in the space-saving, 6-pin SOT23 package.

The MAX2640 and MAX2641 are ultra-low-noise ampli­ fiers that operate with RF input frequency ranges of 300MHz to 1500MHz (MAX2640) or 1400MHz to 2500MHz (MAX2641). These devices are available in SOT23-6 packages and contain internal bias circuitry to minimize the number of required external components. Their small size and low external component count make them ideal for applications where board space is limited.

Features

• Wide Operating Frequency Range
  • MAX2640: 300MHz to 1500MHz
  • MAX2641: 1400MHz to 2500MHz
• Low Noise Figure
  • MAX2640: 0.9dB at 900MHz
  • MAX2641: 1.2dB at 1575MHz, 1.3dB at 1900MHz, 1.5dB at 2450MHz
• High Gain
  • MAX2640: 15.1dB at 900MHz
  • MAX2641: 15.7dB at 1575MHz, 14.4dB at 1900MHz, 13.5dB at 2450MHz
• High Reverse Isolation
  • MAX2640: 40dB at 900MHz
  • MAX2641: 31dB at 1575MHz, 30dB at 1900MHz, 24dB at 2450MHz
• +2.7V to +5.5V Single-Supply Operation
• Low 3.5mA Supply Current
• Ultra-Small SOT23-6 Package

Applications

• 315MHz/400MHz/900MHz/2.4GHz ISM Radios
• Cellular/PCS Handsets
• GPS Receivers
• Cordless Phones
• Wireless LANs Wireless Data