Description

The MAX2750AUA is a self-contained voltage-controlledoscillator (VCO) intended for use over the 2370MHzto 2470MHz frequency range. The IC combines a fullyintegrated oscillator and output buffer in a miniature 8-pinµMAX® package.The inductor and varactor elements of the tank are integratedon-chip, greatly simplifying application of the part.The only required external components are a couple ofsupply bypass capacitors. The IC provides direct connectionto the VCO tuning voltage input and the VCO bufferoutput. The tuning voltage input range is +0.4V to +2.4V,and the oscillator frequency tuning range is factory adjustedto provide guaranteed limits. The output signal isbuffered by an amplifier stage (internally matched to 50Ω)to provide higher output power and isolate the device fromload impedance variations.The MAX2750AUA operates over a +2.7V to +5.5V supplyvoltage range. Internal regulation of the oscillator supplyvoltage eliminates the need for an external LDOregulator for the VCO. The IC also provides a digitally controlledshutdown mode to permit implementation ofsophisticated power-supply management. In shutdown,the supply current is reduced to less than 2µA.Applications2.4GHz ISM Band