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Monolithic Voltage Controlled Oscillators

Fully monolithic 900MHz SiGe VCO and Buffer in 8-Pin µMAX Package Replaces Modules

Product Details

The MAX2622/MAX2623/MAX2624 self-contained voltage-controlled oscillators (VCOs) combine an integrated oscillator and output buffer in a miniature 8-pin µMAX® package.

The inductor and varactor elements of the tank circuits are integrated on-chip, greatly simplifying application of the part. In addition, the center frequency of oscillation and frequency span are factory preset to provide a guaranteed frequency range versus control voltage. An external tuning voltage controls the oscillation frequency. The output signals are buffered by an amplifier stage (easily matched to 50Ω), using only capacitors to provide higher output power and isolate the devices from load impedance variations.

The MAX2622/MAX2623/MAX2624 operate from a +2.7V to +3.3V supply voltage and require only 9mA of supply current. In shutdown mode, the supply current is reduced to 0.1µA.

Key Features

  • Fully Monolithic
  • Guaranteed Performance
  • On-Chip 50Ω Output Match
  • Wide Choice of Frequencies
    • 855MHz to 881MHz (MAX2622)
    • 885MHz to 950MHz (MAX2623)
    • 947MHz to 998MHz (MAX2624)
  • +2.7V to +3.3V Single-Supply Operation
  • Low-Current Shutdown Mode
  • Smaller than Modules (8-pin µMAX package)

Applications/Uses

  • 866MHz to 868MHz European ISM Band (MAX2622)
  • 902MHz to 928MHz ISM Band, ±10.7MHz IF (MAX2623)
  • 902MHz to 928MHz ISM Band, 45MHz to 70MHz IF (MAX2624)
  • DECT 1/2 Frequency LO (MAX2623)
Parametric specs for VCOs
RF Freq. (MHz) (max) 998
RF Freq. (MHz) (min) 947
LO Driver Outputs No
PLL Driver Outputs Yes
POUT (dBm) (min) -3
POUT (dBm) (max) -3
Package/Pins UMAX/8
Budgetary
Price (See Notes)
$3.38 @1k
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Simplified Block Diagram

MAX2622, MAX2623, MAX2624: Typical Operating Circuit MAX2622, MAX2623, MAX2624: Typical Operating Circuit Zoom icon

Technical Docs

Design & Development

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Description

The MAX2622/MAX2623/MAX2624 evaluation kits (EV kits) simplify evaluation of the MAX2622/MAX2623/MAX2624 VCOs. These kits enable testing of the devices' RF performance and require no additional support circuitry. The signal output uses an SMA connector to facilitate the connection to RF test equipment.

The MAX2622 EV kit is assembled with the MAX2622 and incorporates output matching components optimized for an RF frequency of 868MHz. The MAX2623 EV kit is assembled with the MAX2623 and incorporates output matching components optimized for an RF frequency of 917MHz. The MAX2624 EV kit is assembled with the MAX2624 and incorporates output matching components optimized for an RF frequency of 973MHz.

View Details

Features

  • Easy Evaluation of MAX2622/MAX2623/MAX2624
  • +2.7V to +3.3V Single-Supply Operation
  • RF Output Matched to 50Ω
  • All Critical Peripheral Components Included

Description

The MAX2622/MAX2623/MAX2624 evaluation kits (EV kits) simplify evaluation of the MAX2622/MAX2623/MAX2624 VCOs. These kits enable testing of the devices' RF performance and require no additional support circuitry. The signal output uses an SMA connector to facilitate the connection to RF test equipment.

The MAX2622 EV kit is assembled with the MAX2622 and incorporates output matching components optimized for an RF frequency of 868MHz. The MAX2623 EV kit is assembled with the MAX2623 and incorporates output matching components optimized for an RF frequency of 917MHz. The MAX2624 EV kit is assembled with the MAX2624 and incorporates output matching components optimized for an RF frequency of 973MHz.

View Details

Features

  • Easy Evaluation of MAX2622/MAX2623/MAX2624
  • +2.7V to +3.3V Single-Supply Operation
  • RF Output Matched to 50Ω
  • All Critical Peripheral Components Included

Description

The MAX2622/MAX2623/MAX2624 evaluation kits (EV kits) simplify evaluation of the MAX2622/MAX2623/MAX2624 VCOs. These kits enable testing of the devices' RF performance and require no additional support circuitry. The signal output uses an SMA connector to facilitate the connection to RF test equipment.

The MAX2622 EV kit is assembled with the MAX2622 and incorporates output matching components optimized for an RF frequency of 868MHz. The MAX2623 EV kit is assembled with the MAX2623 and incorporates output matching components optimized for an RF frequency of 917MHz. The MAX2624 EV kit is assembled with the MAX2624 and incorporates output matching components optimized for an RF frequency of 973MHz.

View Details

Features

  • Easy Evaluation of MAX2622/MAX2623/MAX2624
  • +2.7V to +3.3V Single-Supply Operation
  • RF Output Matched to 50Ω
  • All Critical Peripheral Components Included

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Parameters

Parametric specs for VCOs
RF Freq. (MHz) (max) 998
RF Freq. (MHz) (min) 947
LO Driver Outputs No
PLL Driver Outputs Yes
POUT (dBm) (min) -3
POUT (dBm) (max) -3
Package/Pins UMAX/8
Budgetary
Price (See Notes)
$3.38 @1k

Key Features

  • Fully Monolithic
  • Guaranteed Performance
  • On-Chip 50Ω Output Match
  • Wide Choice of Frequencies
    • 855MHz to 881MHz (MAX2622)
    • 885MHz to 950MHz (MAX2623)
    • 947MHz to 998MHz (MAX2624)
  • +2.7V to +3.3V Single-Supply Operation
  • Low-Current Shutdown Mode
  • Smaller than Modules (8-pin µMAX package)

Applications/Uses

  • 866MHz to 868MHz European ISM Band (MAX2622)
  • 902MHz to 928MHz ISM Band, ±10.7MHz IF (MAX2623)
  • 902MHz to 928MHz ISM Band, 45MHz to 70MHz IF (MAX2624)
  • DECT 1/2 Frequency LO (MAX2623)

Description

The MAX2622/MAX2623/MAX2624 self-contained voltage-controlled oscillators (VCOs) combine an integrated oscillator and output buffer in a miniature 8-pin µMAX® package.

The inductor and varactor elements of the tank circuits are integrated on-chip, greatly simplifying application of the part. In addition, the center frequency of oscillation and frequency span are factory preset to provide a guaranteed frequency range versus control voltage. An external tuning voltage controls the oscillation frequency. The output signals are buffered by an amplifier stage (easily matched to 50Ω), using only capacitors to provide higher output power and isolate the devices from load impedance variations.

The MAX2622/MAX2623/MAX2624 operate from a +2.7V to +3.3V supply voltage and require only 9mA of supply current. In shutdown mode, the supply current is reduced to 0.1µA.

Simplified Block Diagram

MAX2622, MAX2623, MAX2624: Typical Operating Circuit MAX2622, MAX2623, MAX2624: Typical Operating Circuit Zoom icon

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