MAX2622, MAX2623, MAX2624 Monolithic Voltage Controlled Oscillators

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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

Applications/Uses

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)
MAX2622 covers 855 to 881 MHz
MAX2623 covers 885 to 950 MHz
MAX2624 covers 947 to 998 MHz
9 mA supply current and -8 dBm output power

	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)

Key Specifications: VCOs/VCO Buffers

Part Number

Min. Frequency (MHz)

Max. Frequency (MHz)

Features

Supply Current (mA)

Footprint (mm x mm)

Package

Price^**

MAX2622

855

881

•	+2.7V to +3.3V Single-Supply Operation

•	-101dBc/Hz Phase Noise at 100kHz Offset

•	-8dBm Output Power

•	855MHz to 881MHz Frequency Range

3.0 x 4.9

uMAX/8

$1.62 @ 1k

MAX2623

885

950

•	+2.7V to +3.3V Single-Supply Operation

•	-101dBc/Hz Phase Noise at 100kHz Offset

•	-8dBm Output Power

•	885MHz to 950MHz Frequency Range

$1.62 @ 1k

MAX2624

947

998

•	+2.7V to +3.3V Single-Supply Operation

•	-101dBc/Hz Phase Noise at 100kHz Offset

•	-8dBm Output Power

•	947MHz to 998MHz Frequency Range

$1.80 @ 1k

See All VCOs/VCO Buffers (21)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.