HMC429LP4E

The HMC429LP4E from Analog Devices is a monolithic microwave integrated circuit (MMIC) Voltage Controlled Oscillator (VCO) featuring an integrated buffer amplifier. This device utilizes GaAs InGaP Heterojunction Bipolar Transistor (HBT) technology and is designed for applications requiring excellent phase noise performance over temperature, shock, and vibration.

This VCO operates within a frequency range of 4.45 to 5.0 GHz, delivering a typical power output of +4.0 dBm from a single 3.0V supply at 30mA. Its phase noise performance is rated at -105 dBc/Hz at a 100 kHz offset. The device integrates resonators, negative resistance devices, and varactor diodes, eliminating the need for external resonators.

Typical applications for the HMC429LP4E include WLAN standards like 802.11a and HiperLAN, VSAT, UNII, microwave radio systems, test equipment, industrial controls, and military applications. It is packaged in a low-cost, leadless 4x4 mm QFN surface mount package.

The electrical specifications include a tune voltage range of 0 to 10V, a supply current of 30mA, and an output return loss of 6 dB. Harmonics are specified at -11 dBc for the 2nd order and -23 dBc for the 3rd order. The device also exhibits pulling of 10 MHz pp into a 2.0:1 VSWR and pushing of 14 MHz/V at Vtune = +5V.