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300MHz to 2500MHz SiGe Ultra-Low-Noise Amplifiers

Product Details

Key Features

Applications/Uses

Parametric specs for Low-Noise Amplifiers
RF Freq. (MHz) (min) 1400
RF Freq. (MHz) (max) 2500
Gain (dB) 14.4
Noise Figure (dB) 1.3
Input IP3 (dBm) -4
OIP3 (dBm) 10.4
ISUPPLY (mA) 5.3
Footprint (mm x mm) 2.7 x 2.9
Package/Pins SOT23/6
Budgetary
Price (See Notes)
1.28
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Simplified Block Diagram

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Parameters

Parametric specs for Low-Noise Amplifiers
RF Freq. (MHz) (min) 1400
RF Freq. (MHz) (max) 2500
Gain (dB) 14.4
Noise Figure (dB) 1.3
Input IP3 (dBm) -4
OIP3 (dBm) 10.4
ISUPPLY (mA) 5.3
Footprint (mm x mm) 2.7 x 2.9
Package/Pins SOT23/6
Budgetary
Price (See Notes)
1.28

Key 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/Uses

  • 400MHz/900MHz/2.4GHz ISM-Band Radios
  • Cellular/PCS Handsets
  • Cordless Phones
  • GPS Receivers
  • Wireless Data
  • Wireless Local Area Networks (WLANs)

Description

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 application, the only external components needed are a two-element input match, input and output blocking capacitors, and a VCC bypass capacitor.

The MAX2640/MAX2641 are designed on a high-frequency, low-noise, advanced silicon-germanium process and are offered in the space-saving 6-pin SOT23 package.

Simplified Block Diagram

MAX2640, MAX2641: Typical Operating Circuit MAX2640, MAX2641: Typical Operating Circuit Zoom icon

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 .