HMC812LC4 v03.0614 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz Typical Applications Features The HMC812LC4 is ideal for: Wide Bandwidth: 5 - 30 GHz Excellent Linearity: +28 dBm Input IP3 Point-to-Point Radio VSAT Radio High Power Handling: +25 dBm Input P1dB 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 HMC812LC4 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 -3V to 0V with Vctrl2 fixed at -3V. The control voltage of the 2nd attenuation stage, Vctrl2, should then be varied from -3V to 0V, with Vctrl1 fixed at 0V. The HMC812LC4 is housed in a RoHS compliant 4x4 mm QFN lead- less ceramic package However, 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 2 dB Insertion Loss 16 - 24 GHz 3 dB 24 - 30 GHz 4 dB Attenuation Range 30 dB Input Return Loss 12 dB Output Return Loss 8 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., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 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 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 1 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or apps hittite.com OBSOLETE ATTENUATORS - ANALOG - SMTHMC812LC4 v03.0614 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz Attenuation vs. Frequency over Vctrl Attenuation vs. Frequency over Vctrl Vctrl1 = Variable, Vctrl2 = -3V Vctrl1 = 0V, Vctrl2 = Variable 0 0 -5 -10 -10 -20 -15 -30 -3.0 V -3.0 V -1.8 V -2.0 V -20 -1.4 V -40 -1.6 V -0.8 V -1.0 V 0.0 V 0.0 V -25 -50 2 6 10 14 18 22 26 30 2 6 10 14 18 22 26 30 FREQUENCY (GHz) FREQUENCY (GHz) Attenuation vs. Vctrl1 Attenuation vs. Vctrl2 Over Temperature 10 GHz, Vctrl2 = -3V Over Temperature 10 GHz, Vctrl1 = 0V 0 0 -5 +25 C -3 +85 C -40 C -10 -6 -15 -20 -9 -25 +25 C -12 +85 C -40 C -30 -15 -35 -3 -2.5 -2 -1.5 -1 -0.5 0 -3 -2.5 -2 -1.5 -1 -0.5 0 Vctrl1 (V) Vctrl2 (V) Attenuation vs. Pin 10 GHz Input Return Loss Vctrl1 = Variable, Vctrl2 = -3V Vctrl1 = Variable, Vctrl2 = -3V 0 0 -3 -10 -6 -9 -20 -12 -3.0 V -30 -1.6 V 0.0 V -3.0 V -0.8 V -15 -1.8 V 0.0 V -1.4 V -18 -40 0 3 6 9 12 15 18 2 6 10 14 18 22 26 30 INPUT POWER (dBm) FREQUENCY (GHz) Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 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 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 2 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or apps hittite.com OBSOLETE ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) RETURN LOSS (dB) ATTENUATION (dB) ATTENUATION (dB) ATTENUATORS - ANALOG - SMT