MAX2605, MAX2606, MAX2607, MAX2608, MAX2609 45MHz至650MHz、集成中频VCO，差分输出

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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.

关键特性

应用/使用

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

	2.4GHz ISM波段
	902MHz至928MHz ISM波段
	蜂窝与PCS移动电话
	通用中频振荡器
	GPS接收机
	陆地移动无线装置

Key Specifications: VCOs/VCO Buffers

Part Number

Solutions

Applications

Min. Frequency (MHz)

Max. Frequency (MHz)

Features

Supply Current (mA)

Footprint (mm x mm)

RoHS Available

Package

Price^**

MAX2605

900MHz
Cellular
Cordless
Keyless

•

Cellular

•

Cordless

•

GPS

•

ISM

•

WLAN

•	-10dBm Single-Ended Output Power

•	-117dBc/Hz Phase Noise at 100kHz Offset

•	45MHz to 75MHz Frequency Range

•	Integrated Varactor

1.9

2.7 x 2.9

Yes

SOT-23/6

$0.90 @ 1k

MAX2606

900MHz
Cellular
Cordless
Keyless

150

•	-10dBm Single-Ended Output Power

•	-112dBc/Hz Phase Noise at 100kHz Offset

•	70MHz to 150MHz Frequency Range

•	Integrated Varactor

2.1

$0.90 @ 1k

MAX2607

900MHz
Cellular
Cordless
Keyless

150

300

•	-107dBc/Hz Phase Noise at 100kHz Offset

•	-10dBm Single-Ended Output Power

•	150 to 300MHz Frequency Range

•	Integrated Varactor

2.1

$0.90 @ 1k

MAX2608

900MHz
Cellular
Cordless
Keyless

300

500

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

•	-10dBm Single-Ended Output Power

•	300MHz to 500MHz Frequency Range

•	Integrated Varactor

2.7

$0.90 @ 1k

MAX2609

900MHz
Cellular
Cordless

500

650

•	-10dBm Single-Ended Output Power

•	-93dBc/Hz Phase Noise at 100kHz Offset

•	500MHz to 650MHz Frequency Range

•	Integrated Varactor

3.6

$0.90 @ 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.