The HMC533LP4 & HMC533LP4E are GaAs InGaP Heterojunction Bipolar Transistor (HBT) MMIC VCOs. The HMC533LP4 & HMC533LP4E integrate resonators, negative resistance devices, varactor diodes and feature a divide-by-16 output. The VCO's phase noise performance is excellent over temperature, shock, and process due to the oscillator's monolithic structure. Power output is +12 dBm typical from a +5V supply voltage. Prescaler function can be disabled to conserve current if not required. The voltage controlled oscillator is packaged in a leadless QFN 4 x 4 mm surface mount package.