MAX2605

AVAILABLE EVALUATION KIT AVAILABLE MAX2605–MAX2609 45MHz to 650MHz, Integrated IF VCOs with Differential Output General 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. Applications Cellular and PCS Mobile Phones 2.4GHz ISM Band 902MHz to 928MHz ISM Band Land Mobile Radio GPS Receivers Functional Diagrams General-Purpose IF Oscillators PART MAX2605 MAX2606 MAX2607 MAX2608 MAX2609 Selector Guide FREQUENCY RANGE (MHz) 45 to 70 70 to 150 150 to 300 300 to 500 500 to 650 SUPPLY CURRENT (mA) 1.9 2.1 2.1 2.7 3.6 PHASE NOISE (dBc/Hz) -117 -112 -107 -100 -93 ...