Maker : Hittite Microwave Corporation
Part No. : HMC812LC4

  Datasheet PDF : HMC812LC4.pdf
  Cross Reference : HMC812LC4 Cross Reference
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www.DataSheet4U.com v00.0309 HMC812LC4 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz Features Wide Bandwidth: 5 - 30 GHz Excellent Linearity: +25 dBm Input P1dB Wide Attenuation Range: 30 dB 24 Lead Ceramic 4x4mm SMT Package: 16mm2 5 ATTENUATORS - ANALOG - SMT Typical Applications The HMC812LC4 is ideal for: • Point-to-Point Radio • VSAT Radio • Test Instrumentation • Microwave Sensors • 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 voltages, Vctrl1 and Vctrl2. Optimum linearity performance 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 leadless ceramic package However, if the Vctrl1 and Vctrl2 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 AGC circuits and temperature compensation of multiple gain stages in microwave point-to-point and VSAT radios. Electrical Specifi cations, TA = +25° C, 50 Ohm system Parameter Insertion Loss Attenuation Range Input Return Loss Output Return Loss Input Power for 1 dB Compression (any attenuation) Input Third Order Intercept (Two-tone Input Power = 10 dBm Each Tone) 5 - 16 GHz 16 - 24 GHz 24 - 30 GHz Min. Typ. 2 3 4 30 12 8 25 28 Max. Units dB dB dB dB dB dB dBm dBm 5 - 218 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com www.DataSheet4U.com HMC812LC4 v00.0309 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz Attenuation vs. Frequency over Vctrl Vctrl1 = Variable, Vctrl2 = -3V 0 Attenuation vs. Frequency over Vctrl Vctrl1 = 0V, Vctrl2 = Variable 0 5 ATTENUATORS - ANALOG - SMT 5 - 219 -5 ATTENUATION (dB) ATTENUATION (dB) -10 -10 -20 -15 -3.0 V -1.8 V -1.4 V -0.8 V 0.0 V -30 -3.0 V -2.0 V -1.6 V -1.0 V 0.0 V -20 -40 -25 2 6 10 14 18 22 26 30 FREQUENCY (GHz) -50 2 6 10 14 18 22 26 30 FREQUENCY (GHz) Attenuation vs. Vctrl1 Over Temperature @ 10 GHz, Vctrl2 = -3V 0 Attenuation vs. Vctrl2 Over Temperature @ 10 GHz, Vctrl1 = 0V 0 -5 +25 C +85 C -40 C -3 ATTENUATION (dB) ATTENUATION (dB) -10 -15 -20 -25 -30 -35 -3 -2.5 -2 -1.5 Vctrl1 (V) -1 -0.5 0 -3 -2.5 -2 -1.5 Vctrl2 (V) -6 -9 +25 C +85 C -40 C -12 -15 -1 -0.5 0 Attenuation vs. Pin @ 10 GHz Vctrl1 = Variable, Vctrl2 = -3V 0 -3 -6 -9 -12 -15 -18 0 3 6 9 12 15 18 INPUT POWER (dBm) -3.0 V -1.8 V -1.4 V -0.8 V 0.0 V Input Return Loss Vctrl1 = Variable, Vctrl2 = -3V 0 RETURN LOSS (dB) ATTENUATION (dB) -10 -20 -30 -3.0 V -1.6 V 0.0 V -40 2 6 10 14 18 22 26 30 FREQUENCY (GHz) For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com www.DataSheet4U.com HMC812LC4 v00.0309 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz 5 ATTENUATORS - ANALOG - SMT Input Return Loss Vctrl1 = 0V, Vctrl2 = Variable 0 Output Return Loss Vctrl1 = Variable, Vctrl2 = -3V 0 RETURN LOSS (dB) -10 RETURN LOSS (dB) -10 -20 -20 -3.0 V -1.6 V 0.0 V -30 -3.0 V -1.6 V 0.0 V -30 2 6 10 14 18 22 26 30 FREQUENCY (GHz) -40 2 6 10 14 18 22 26 30 FREQUENCY (GHz) Output Return Loss Vctrl1 = 0V, Vctrl2 = Variable 0 Input IP3 vs Input Power @ 10 GHz Vctrl1 = Variable, Vctrl2 = -3V 60 50 RETURN LOSS (dB) -10 IP3 (dBm) -20 -3.0 V -1.4 V 0.0 V 40 30 -3.0 V -2.6 V -2.2 V...

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