HMC812ALC4 v07.0617 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz 8 Typical Applications Features The HMC812ALC4 is ideal for: Wide Bandwidth: 5 - 30 GHz High Power Handling: +25 dBm Input P1dB Point-to-Point Radio VSAT Radio Excellent Linearity: +28 dBm Input IP3 Wide Attenuation Range: 30 dB Test Instrumentation Microwave Sensors 24 Lead Ceramic 4x4 mm SMT Package: 16mm Military, ECM & Radar Functional Diagram General Description The HMC812ALC4 is an absorptive Voltage Variable Attenuator (VVA) which operates from 5 - 30 GHz and is ideal in designs where an analog DC control signal must be used to control RF signal levels over a 30 dB amplitude range. It features two shunt-type attenuators which are controlled by two analog vol- tages, Vctrl1 and Vctrl2. Optimum linearity perfor- mance of the attenuator is achieved by first varying Vctrl1 of the 1st attenuation stage from -5V to 0V with Vctrl2 fixed at -5V. The control voltage of the 2nd attenuation stage, Vctrl2, should then be varied from -5V to 0V, with Vctrl1 fixed at 0V. The HMC812ALC4 is housed in a RoHS compliant 4x4 mm QFN lead- less ceramic package Furthermore, if the Vctrl1 and Vctrl2 pins are connected together it is possible to achieve the full analog atten- uation range with only a small degradation in input IP3 performance. Applications include AGC circuits and temperature compensation of multiple gain stages in microwave point-to-point and VSAT radios. Electrical Specifications, T = +25 C, 50 Ohm system A Parameter Min. Typ. Max. Units 5 - 16 GHz 1.8 dB Insertion Loss 16 - 24 GHz 2.2 dB 24 - 30 GHz 2.5 dB Attenuation Range 35 dB Input Return Loss 10 dB Output Return Loss 10 dB Input Power for 1 dB Compression (any attenuation) 25 dBm Input Third Order Intercept (Two-tone Input Power = 10 dBm Each Tone) 28 dBm Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., One TechFnoor plorgicy We, daeyl, Piver.Oy, a. Bnd tox 9o p10la6c, Ne oordrweroso: Ad, MnaloA 0g D2e0v6ic2e-s9, I10n6c., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at www.analog.com rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 781-329-4700 Order online at www.analog.com 8 - 1 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Application Support: Phone: 1-800-ANALOG-D Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D ATTENUATORS - ANALOG - SMTHMC812ALC4 v07.0617 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz Attenuation vs. Frequency over Vctrl Attenuation vs. Frequency over Vctrl 8 Vctrl1 = Variable, Vctrl2 = -5V Vctrl1 = 0V, Vctrl2 = Variable 0 0 -5 -10 -10 -20 -15 -30 -20 -40 -25 -50 2 6 10 14 18 22 26 30 2 6 10 14 18 22 26 30 FREQUENCY (GHz) FREQUENCY (GHz) -4.0 V -2.2 V 0.0 V -4.0 V -2.2 V 0.0 V -2.8 V -1.2 V -2.8 V -1.2 V Attenuation vs. Vctrl1 Attenuation vs. Vctrl2 Over Temperature 10 GHz, Vctrl2 = -5V Over Temperature 10 GHz, Vctrl1 = 0V 0 0 -5 -3 -10 -6 -15 -20 -9 -25 -12 -30 -15 -35 -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0 -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0 Vctrl1 (V) Vctrl2 (V) +25 C +85 C -40 C +25 C +85 C -40 C Attenuation vs. Pin 10 GHz Input Return Loss Vctrl1 = Variable, Vctrl2 = -5V Vctrl1 = Variable, Vctrl2 = -5V 0 0 -3 -10 -6 -9 -20 -12 -30 -15 -18 -40 10 15 20 25 2 6 10 14 18 22 26 30 INPUT POWER (dBm) FREQUENCY (GHz) -4.0 V -1.8 V 0.0 V -4.0 V -2.0 V 0.0 V -2.8 V -0.8 V For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at www.analog.com 8 - 2 Application Support: Phone: 1-800-ANALOG-D ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) RETURN LOSS (dB) ATTENUATION (dB) ATTENUATION (dB) ATTENUATORS - ANALOG - SMT