آر اف (فرکانس رادیویی) و بی‌سیم تقویت‌کننده‌ آر اف

Product Attributes

Introduction

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.

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

• Digital Cordless Phones
• 915MHz ISM - Band Applications
• Two - Way Pagers
• Wireless LANs
• Cellular Phones
• AM and FM Analog Transmitters