HMC985ALP4KE v02.0617 GaAs MMIC VOLTAGE - VARIABLE ATTENUATOR, 10 - 40 GHz Typical Applications Features Wide Bandwidth: 10 - 40 g Hz t he HMC985al P4Ke is ideal for: excellent l inearity: +32 dB Input IP3 Point-to-Point r adio Wide attenuation r ange: 35 dB Vsat r adio n o external Matching t est Instrumentation 24 l ead 4x4 mm s Mt Package: 16 mm Microwave sensors Military, eCM & r adar General Description the HMC985alP4Ke is an absorptive Voltage Variable attenuator (VVa) which operates from 10 Functional Diagram - 40 gHz and is ideal in designs where an analog DC control signal must be used to control r F signal levels over a 35 dB dynamic range. It features two shunt-type attenuators which are controlled by two analog voltages, Vctl1 and Vctl2. optimum linearity performance of the attenuator is achieved by first varying Vctl1 of the first attenuation stage from -5V to 0V with Vctl2 fixed at -5V. t he control voltage of the second attenuation stage, Vctl2, should then be varied from -5V to 0V with Vctl1 fixed at 0V. If the Vctl1 and Vctl2 pins are connected together it is possible to achieve the full analog attenuation range with only a small degradation in input IP3 performance. applications include ag C circuits and temperature compensation of multiple gain stages in microwave point-to-point and Vsat radios. Electrical Specifications, T = +25 C, Test Condition Vctl1 = Vctl2 A Parameter Frequency Min. typ. Max. u nits 10 - 20 g Hz 3.1 3.9 dB 1 Insertion l oss 20 - 30 g Hz 2.1 3.5 dB 30 -40 g Hz 2.9 4.0 dB 10 - 20 g Hz 25 30 dB attenuation r ange 20 - 30 g Hz 30 39 dB 30 - 40 g Hz 35 42 dB Input r eturn l oss 10 - 40 g Hz 13 dB o utput r eturn l oss 10 - 40 g Hz 13 dB Input t hird o rder Intercept 32 dBm 2 (two-tone input Power = 10 dBm each t one) 1 Vcntl1 = Vcntl2 =-4V 2 Vcntl1 = Vcntl2 =-3.4V worst case Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., 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: 781-329-4700 Order online at www.analog.com 1 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D attenuators - analog - s MtHMC985ALP4KE v02.0617 GaAs MMIC VOLTAGE - VARIABLE ATTENUATOR, 10 - 40 GHz Attenuation vs. Frequency over Vctl1 = Attenuation vs. Frequency over Vctl1 = Variable, Vctl2 = -5V 0V, Vctl2 = Variable 0 0 -10 -5 -20 -10 -30 -40 -15 -50 -20 -60 -25 -70 10 15 20 25 30 35 40 10 15 20 25 30 35 40 FREQUENCY (GHz) FREQUENCY (GHz) -4.0 V -2.0 V 0.0 V -4.0 V -2.0 V 0.0 V -3.0 V -1.6 V -2.8 V -1.6 V -2.6 V -1.0 V -2.4 V -1.0 V Attenuation vs. Vctl1 Attenuation vs. Vctl2 Over Temperature 25 GHz, Vctl2 = -5V Over Temperature 30 GHz, Vctl1 = 0V 0 0 -5 -3 -10 -15 -6 -20 -9 -25 -30 -12 -35 -15 -40 -45 -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) -40 C +25 C +85 C -40 C +25 C +85 C Attenuation vs. Pin 20 GHz over Vctl1 Attenuation vs. Pin 20 GHz over Vctl2 Vctl1 = Variable, Vctl2 = -3V Vctl2 = Variable, Vctl1 = 0V 0 0 -4 -10 -8 -20 -12 -30 -16 -40 -20 -24 -50 10 15 20 25 10 15 20 25 INPUT POWER (dBm) INPUT POWER (dBm) -4.0 V -1.8 V 0.0 V -4.0 V -1.8 V 0.0 V -3.0 V -1.2 V -3.2 V -1.2 V -2.4 V -0.6 V -2.6 V -0.6 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 2 Application Support: Phone: 1-800-ANALOG-D ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) attenuators - analog - s Mt