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1575MHz/1900MHz Variable-IP3 Low-Noise Amplifiers

Product Details

The MAX2654/MAX2655/MAX2656 high third-order intercept point (IP3), low-noise amplifiers (LNAs) are designed for applications in GPS, PCS, WLL, and satellite phone systems. The MAX2654/MAX2655/MAX2656 incorporate on-chip internal output matching to 50Ω, eliminating the need for external matching components. A shutdown feature in the MAX2654/MAX2655 reduces the operating current to 0.1µA, eliminating the need for an external supply switch.

The MAX2654 operates in the GPS frequency of 1575MHz with 15.1dB of gain, 1.5dB noise figure, and only consumes 5.8mA. The MAX2655 is designed with high-input IP3 to improve operation in cellular applications where the cellular power amplifier leaks into the GPS receiver. The MAX2656 is designed for PCS phone applications with 13.5dB of gain in high-gain mode and 0.8dB of gain in low-gain mode (selected by a logic control) and 1.9dB noise figure.

The IP3 of MAX2655/MAX2656 is adjustable by a single external bias resistor (RBIAS), allowing supply current to be optimized for a specific application.

The MAX2654/MAX2655/MAX2656 operate from a +2.7V to +5.5V single supply and are available in the miniature 6-pin SC70 package.

Key Features

  • Low Noise Figure
    • MAX2654: 1.5dB at 1575MHz
    • MAX2655: 1.45dB at 1575MHz
    • MAX2656: 1.9dB at 1960MHz
  • High Gain
    • MAX2654: 15.1dB at 1575MHz
    • MAX2655: 14.1dB at 1575MHz
    • MAX2656: 13.5dB at 1960MHz
  • 12.7dB Gain Step (MAX2656 only)
  • Integrated 50Ω Output Matching
  • Variable IP3 Set by One Bias Resistor (MAX2655/MAX2656 only)
  • 0.1µA Shutdown Mode (MAX2654/MAX2655 only)
  • +2.7V to +5.5V Single-Supply Operation
  • Ultra-Small 6-Pin SC70 Package

Applications/Uses

  • DCS/PCS Cellular Phones
  • GPS Receivers in Cellular Phones
  • Satellite Phones
  • Wireless Local Loop (WLL)
Parametric specs for Low-Noise Amplifiers
RF Freq. (MHz) (min) 1400
RF Freq. (MHz) (max) 1700
Gain (dB) 14.1
Noise Figure (dB) 1.45
Input IP3 (dBm) 3.8
OIP3 (dBm) 16.9
ISUPPLY (mA) 5.9 to 10.1
Footprint (mm x mm) 2.0 x 2.1
Package/Pins SC70/6
Budgetary
Price (See Notes)
$0.92 @1k
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Simplified Block Diagram

MAX2654, MAX2655, MAX2656: Typical Operating Circuit MAX2654, MAX2655, MAX2656: Typical Operating Circuit Zoom icon

Design & Development

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Description

The MAX2654/MAX2655/MAX2656 evaluation kits (EV kits) simplify evaluation of the MAX2654/MAX2655/ MAX2656 low-noise amplifiers (LNAs). These kits enable testing of the devices' performance and require no additional support circuitry. The signal input and output use SMA connectors to facilitate connection of RF test equipment.

The MAX2654/MAX2655/MAX2656 EV kits are fully assembled with the MAX2654/MAX2655/MAX2656 on board, and incorporate input matching components optimized for specific frequency operation.

View Details

Features

  • Easy Evaluation of MAX2654/MAX2655/MAX2656
  • +2.7V to +5.5V Single-Supply Operation
  • RF Input and Output Matched to 50Ω
  • Jumper Included for Gain/Shutdown Setting
  • Fully Assembled and Teste

Description

The MAX2654/MAX2655/MAX2656 evaluation kits (EV kits) simplify evaluation of the MAX2654/MAX2655/ MAX2656 low-noise amplifiers (LNAs). These kits enable testing of the devices' performance and require no additional support circuitry. The signal input and output use SMA connectors to facilitate connection of RF test equipment.

The MAX2654/MAX2655/MAX2656 EV kits are fully assembled with the MAX2654/MAX2655/MAX2656 on board, and incorporate input matching components optimized for specific frequency operation.

View Details

Features

  • Easy Evaluation of MAX2654/MAX2655/MAX2656
  • +2.7V to +5.5V Single-Supply Operation
  • RF Input and Output Matched to 50Ω
  • Jumper Included for Gain/Shutdown Setting
  • Fully Assembled and Teste

Description

The MAX2654/MAX2655/MAX2656 evaluation kits (EV kits) simplify evaluation of the MAX2654/MAX2655/ MAX2656 low-noise amplifiers (LNAs). These kits enable testing of the devices' performance and require no additional support circuitry. The signal input and output use SMA connectors to facilitate connection of RF test equipment.

The MAX2654/MAX2655/MAX2656 EV kits are fully assembled with the MAX2654/MAX2655/MAX2656 on board, and incorporate input matching components optimized for specific frequency operation.

View Details

Features

  • Easy Evaluation of MAX2654/MAX2655/MAX2656
  • +2.7V to +5.5V Single-Supply Operation
  • RF Input and Output Matched to 50Ω
  • Jumper Included for Gain/Shutdown Setting
  • Fully Assembled and Teste

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Support & Training

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Parameters

Parametric specs for Low-Noise Amplifiers
RF Freq. (MHz) (min) 1400
RF Freq. (MHz) (max) 1700
Gain (dB) 14.1
Noise Figure (dB) 1.45
Input IP3 (dBm) 3.8
OIP3 (dBm) 16.9
ISUPPLY (mA) 5.9 to 10.1
Footprint (mm x mm) 2.0 x 2.1
Package/Pins SC70/6
Budgetary
Price (See Notes)
$0.92 @1k

Key Features

  • Low Noise Figure
    • MAX2654: 1.5dB at 1575MHz
    • MAX2655: 1.45dB at 1575MHz
    • MAX2656: 1.9dB at 1960MHz
  • High Gain
    • MAX2654: 15.1dB at 1575MHz
    • MAX2655: 14.1dB at 1575MHz
    • MAX2656: 13.5dB at 1960MHz
  • 12.7dB Gain Step (MAX2656 only)
  • Integrated 50Ω Output Matching
  • Variable IP3 Set by One Bias Resistor (MAX2655/MAX2656 only)
  • 0.1µA Shutdown Mode (MAX2654/MAX2655 only)
  • +2.7V to +5.5V Single-Supply Operation
  • Ultra-Small 6-Pin SC70 Package

Applications/Uses

  • DCS/PCS Cellular Phones
  • GPS Receivers in Cellular Phones
  • Satellite Phones
  • Wireless Local Loop (WLL)

Description

The MAX2654/MAX2655/MAX2656 high third-order intercept point (IP3), low-noise amplifiers (LNAs) are designed for applications in GPS, PCS, WLL, and satellite phone systems. The MAX2654/MAX2655/MAX2656 incorporate on-chip internal output matching to 50Ω, eliminating the need for external matching components. A shutdown feature in the MAX2654/MAX2655 reduces the operating current to 0.1µA, eliminating the need for an external supply switch.

The MAX2654 operates in the GPS frequency of 1575MHz with 15.1dB of gain, 1.5dB noise figure, and only consumes 5.8mA. The MAX2655 is designed with high-input IP3 to improve operation in cellular applications where the cellular power amplifier leaks into the GPS receiver. The MAX2656 is designed for PCS phone applications with 13.5dB of gain in high-gain mode and 0.8dB of gain in low-gain mode (selected by a logic control) and 1.9dB noise figure.

The IP3 of MAX2655/MAX2656 is adjustable by a single external bias resistor (RBIAS), allowing supply current to be optimized for a specific application.

The MAX2654/MAX2655/MAX2656 operate from a +2.7V to +5.5V single supply and are available in the miniature 6-pin SC70 package.

Simplified Block Diagram

MAX2654, MAX2655, MAX2656: Typical Operating Circuit MAX2654, MAX2655, MAX2656: 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