General Description
The HMC431LP4 & HMC431LP4E are GaAs InGaP Heterojunction Bipolar Transistor (HBT) MMIC VCOs with integrated resonators, negative resistance devices, varactor diodes, and buffer amplifi ers. The VCO’s phase noise performance is excellent over temperature, shock, vibration and process due to the oscillator’s monolithic structure. Power output is 2 dBm typical from a 3V supply voltage. The voltage controlled oscillator is packaged in a low cost leadless QFN 4 x 4 mm surface mount package.

FEATUREs
   Pout: +2 dBm
   Phase Noise: -102 dBc/Hz @100 kHz
   No External Resonator Needed
   Single Supply: 3V @ 27 mA
   16mm2 Leadless SMT Package

Typical Applications
   Low noise MMIC VCO w/Buffer Amplifier
   for C-Band applications such as:
   • 802.11a & HiperLAN WLAN
   • VSAT Radios
   • UNII & Point-to-Point Radios