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45MHz to 650MHz, Integrated IF VCOs with Differential Output

Product Details

The MAX2605-MAX2609 are compact, high-performance intermediate-frequency (IF) voltage-controlled oscillators (VCOs) designed specifically for demanding portable wireless communication systems. They combine monolithic construction with low-noise, low-power operation in a tiny 6-pin SOT23 package.

These low-noise VCOs feature an on-chip varactor and feedback capacitors that eliminate the need for external tuning elements, making the MAX2605-MAX2609 ideal for portable systems. Only an external inductor is required to set the oscillation frequency. In addition, an integrated differential output buffer is provided for driving a mixer or prescaler. The buffer output is capable of supplying up to -8dBm (differential) with a simple power match. It also provides isolation from load impedance variations.

The MAX2605-MAX2609 operate from a single +2.7V to +5.5V supply and offer low current consumption. These IF oscillators can cover the 45MHz to 650MHz frequency range.

Key Features

  • Small Size
  • Integrated Varactor for Tuning
  • Low Phase Noise
  • Wide Application Frequency Range
  • Differential or Single-Ended Outputs
  • Single +2.7V to +5.5V Supply
  • Ultra-Small SOT23-6 Package
  • On-Chip Temperature-Stable Bias
  • Low-Current Operation

Applications/Uses

  • 2.4GHz ISM Band
  • 902MHz to 928MHz ISM Band
  • Cellular and PCS Mobile Phones
  • General-Purpose IF Oscillators
  • GPS Receivers
  • Land Mobile Radios
Parametric specs for VCOs
RF Freq. (MHz) (max) 150
RF Freq. (MHz) (min) 70
LO Driver Outputs Yes
PLL Driver Outputs Yes
POUT (dBm) (min) -10
POUT (dBm) (max) -10
Package/Pins SOT23/6
Budgetary
Price (See Notes)
$1.01 @1k
View More

Simplified Block Diagram

MAX2605, MAX2606, MAX2607, MAX2608, MAX2609: Typical Operating Circuit MAX2605, MAX2606, MAX2607, MAX2608, MAX2609: Typical Operating Circuit Zoom icon

Design & Development

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Description

The MAX2605-MAX2609 evaluation kits (EV kits) simplify evaluation of this family of voltage-controlled oscillators (VCOs). These kits enable testing of the devices' performance and require no additional support circuitry. Both signal outputs use SMA connectors to facilitate connection to RF test equipment.

These EV kits are fully assembled and tested. Their oscillation frequencies are set to approximately the midrange of the respective VCOs.

View Details

Features

  • Easy Evaluation
  • Complete, Tunable VCO Test Board with Tank Circuit
  • Low Phase Noise
  • Fully Assembled and Tested

Description

The MAX2605-MAX2609 evaluation kits (EV kits) simplify evaluation of this family of voltage-controlled oscillators (VCOs). These kits enable testing of the devices' performance and require no additional support circuitry. Both signal outputs use SMA connectors to facilitate connection to RF test equipment.

These EV kits are fully assembled and tested. Their oscillation frequencies are set to approximately the midrange of the respective VCOs.

View Details

Features

  • Easy Evaluation
  • Complete, Tunable VCO Test Board with Tank Circuit
  • Low Phase Noise
  • Fully Assembled and Tested

Description

The MAX2605-MAX2609 evaluation kits (EV kits) simplify evaluation of this family of voltage-controlled oscillators (VCOs). These kits enable testing of the devices' performance and require no additional support circuitry. Both signal outputs use SMA connectors to facilitate connection to RF test equipment.

These EV kits are fully assembled and tested. Their oscillation frequencies are set to approximately the midrange of the respective VCOs.

View Details

Features

  • Easy Evaluation
  • Complete, Tunable VCO Test Board with Tank Circuit
  • Low Phase Noise
  • Fully Assembled and Tested

Description

The MAX2605-MAX2609 evaluation kits (EV kits) simplify evaluation of this family of voltage-controlled oscillators (VCOs). These kits enable testing of the devices' performance and require no additional support circuitry. Both signal outputs use SMA connectors to facilitate connection to RF test equipment.

These EV kits are fully assembled and tested. Their oscillation frequencies are set to approximately the midrange of the respective VCOs.

View Details

Features

  • Easy Evaluation
  • Complete, Tunable VCO Test Board with Tank Circuit
  • Low Phase Noise
  • Fully Assembled and Tested

Description

The MAX2605-MAX2609 evaluation kits (EV kits) simplify evaluation of this family of voltage-controlled oscillators (VCOs). These kits enable testing of the devices' performance and require no additional support circuitry. Both signal outputs use SMA connectors to facilitate connection to RF test equipment.

These EV kits are fully assembled and tested. Their oscillation frequencies are set to approximately the midrange of the respective VCOs.

View Details

Features

  • Easy Evaluation
  • Complete, Tunable VCO Test Board with Tank Circuit
  • Low Phase Noise
  • Fully Assembled and Tested

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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.

Parameters

Parametric specs for VCOs
RF Freq. (MHz) (max) 150
RF Freq. (MHz) (min) 70
LO Driver Outputs Yes
PLL Driver Outputs Yes
POUT (dBm) (min) -10
POUT (dBm) (max) -10
Package/Pins SOT23/6
Budgetary
Price (See Notes)
$1.01 @1k

Key Features

  • Small Size
  • Integrated Varactor for Tuning
  • Low Phase Noise
  • Wide Application Frequency Range
  • Differential or Single-Ended Outputs
  • Single +2.7V to +5.5V Supply
  • Ultra-Small SOT23-6 Package
  • On-Chip Temperature-Stable Bias
  • Low-Current Operation

Applications/Uses

  • 2.4GHz ISM Band
  • 902MHz to 928MHz ISM Band
  • Cellular and PCS Mobile Phones
  • General-Purpose IF Oscillators
  • GPS Receivers
  • Land Mobile Radios

Description

The MAX2605-MAX2609 are compact, high-performance intermediate-frequency (IF) voltage-controlled oscillators (VCOs) designed specifically for demanding portable wireless communication systems. They combine monolithic construction with low-noise, low-power operation in a tiny 6-pin SOT23 package.

These low-noise VCOs feature an on-chip varactor and feedback capacitors that eliminate the need for external tuning elements, making the MAX2605-MAX2609 ideal for portable systems. Only an external inductor is required to set the oscillation frequency. In addition, an integrated differential output buffer is provided for driving a mixer or prescaler. The buffer output is capable of supplying up to -8dBm (differential) with a simple power match. It also provides isolation from load impedance variations.

The MAX2605-MAX2609 operate from a single +2.7V to +5.5V supply and offer low current consumption. These IF oscillators can cover the 45MHz to 650MHz frequency range.

Simplified Block Diagram

MAX2605, MAX2606, MAX2607, MAX2608, MAX2609: Typical Operating Circuit MAX2605, MAX2606, MAX2607, MAX2608, MAX2609: 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.