ADF5709 Datasheet | Analog Devices

FEATURES Wide output frequency range: 9.85 GHz to 20.5 GHz Wide tuning bandwidth Low single sideband phase noise: - 83 d Bc/Hz at 100 k Hz offset No external resonator needed Supply current: 70 m A typical at VCC = 5 V 24-terminal, 3.90 mm × 3.90 mm, ceramic LCC package APPLICATIONS Industrial and medical equipment Test and measurement equipment Military radars, electronic warfare (EW), and electronic countermeasures (ECMs) Point to point and multipoint radios Very small aperture terminals (VSATs) Wireless munication infrastructure GENERAL DESCRIPTION The ADF5709 wideband, monolithic microwave integrated circuit (MMIC), voltage controlled oscillator (VCO) supports an output frequency (f OUT) range of 9.85 GHz to 20.5 GHz while maintaining - 83 d Bc/Hz phase noise at 100 k Hz offset without subharmonic tones. The wide frequency tuning range and low phase noise allow phase-locked loop (PLL) solutions for a variety of frequency bands and limit the need for multiple narrow-band VCOs. The broad frequency coverage reduces the board design plexity and simplifies the bill of materials when designing RF and microwave applications. The VCO operates from a single 5 V supply and consumes only 70 m A of supply current that results in minimal power dissipation. The ADF5709 low power consumption is ideal for high performance applications with limited or no airflow. The monolithic construction of the VCO allows optimal output power and noise characteristics over temperature variations. The VCO is fully integrated and incorporates a resonator, a negative resistance device, and a varactor diode that minimize the number of external ponents and reduces board space. 9.85 GHz to 20.5 GHz, Wideband, MMIC VCO FUNCTIONAL BLOCK DIAGRAM 24 23 22 21 20 19 NC 1 NC 2 NC 3 VTUNE 4 NC 5 NC 6 18 NC 17 NC 16 GND 15 RFOUT 14 GND 13 NC 7 8 9 10 11 12 PACKAGE BASE GND Figure 1. 20685-001 The low input impedance on the VTUNE pin of the...