Top

Low-Voltage Silicon RF Power-Amplifier Predriver

Product Details

Key Features

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Key Features

  • Operates Over the 800MHz to 1000MHz Frequency Range
  • Delivers 125mW at 915MHz from +3.6V Supply (100mW typical from +3.0V supply)
  • Operates Directly from 3-Cell NiCd or 1-Cell Lithium-Ion Battery
  • Over 32dB Power Gain
  • RF Power Envelope Ramping is Programmable with One External Capacitor
  • Input Matched to 50Ω (VSWR < 2:1)
  • 15dB Output Power Control Range
  • 1µA Typical Shutdown Current

Applications/Uses

  • 915MHz ISM-Band Applications
  • AM and FM Analog Transmitters
  • Cell Phones
  • Digital Cordless Phones
  • Two-Way Paging
  • Wireless Local Area Networks (WLANs)

Description

The MAX2430 is a versatile, silicon RF power amplifier that operates directly from a 3V to 5.5V supply, making it suitable for 3-cell NiCd or 1-cell lithium-ion battery applications. It is designed for use in the 800MHz to 1000MHz frequency range and, at 915MHz, can produce +21dBm (125mW) of output power with greater than 32dB of gain at VCC = 3.6V.

A unique shutdown function provides an off supply current of typically less than 1µA to save power during "idle slots" in time-division multiple-access (TDMA) transmissions. An external capacitor sets the RF output power envelope ramp time. External power control is also possible over a 15dB range. The amplifier's input is matched on-chip to 50Ω. The output is an open collector that is easily matched to a 50Ω load with few external components.

The MAX2430 is ideal as a driver amplifier for portable and mobile telephone systems, or as a complete power amplifier for other low-cost applications, such as those in the 915MHz spread-spectrum ISM band. It is fabricated with Maxim's high-frequency bipolar transistor process and is available in a thermally enhanced, 16-pin narrow SO and miniature 16-pin PwrQSOP packages with heat slug.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .