HMC635LC4 v02.0218 GaAs PHEMT MMIC DRIVERAMPLIFIER, 18 - 40 GHzEvaluation PCB T M K - S C LO IN B A R & G E IV R S - D R IE List of Materials for Evaluation 122763 [1] LIF P Item Description The circuit board used in the application should M J1 - J2 2.92 mm PC Mount K-Connector use RF circuit design techniques. Signal lines should A have 50 Ohm impedance while the package ground VD1 - VD4, DC Pin VGG1, VGG2 leads and exposed paddle should be connected C1 - C6 100 pF Capacitor, 0402 Pkg. directly to the ground plane similar to that shown. C7 - C12 1000 pF Capacitor, 0603 Pkg. A sufficient number of via holes should be used C13 - C18 4.7 µF Capacitor, Tantalum, Case A to connect the top and bottom ground planes. The U1 HMC635LC4 Driver Amplifier evaluation board should be mounted to an appropri- PCB [2] 122761 Evaluation PCB [3] ate heat sink. The evaluation circuit board shown is [1] Reference this number when ordering complete evaluation PCB available from Analog Devices upon request. [2] Circuit Board Material: Rogers 4350 or Arlon 25FR [3] Due to the very high frequency operation of this product a custom LC4 PCB footprint and solder stencil are required for this design. Performance shown in this data sheetwas produced using this custom footprint. DO NOT USE Hittite’s standard LC4 footprint. Please contact Applications for details. 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 Application Support: Phone: 1-800-ANALOG-D 6 Document Outline Typical Applications Features Functional Diagram General Description Electrical Specifications Reverse Isolation vs. Temperature Gain & Power vs. Supply Voltage @ 30 GHz Noise Figure vs. Temperature Power Compression @ 40 GHz Power Compression @ 30 GHz Psat vs. Temperature P1dB vs. Temperature Output Return Loss vs. Temperature Input Return Loss vs. Temperature Gain vs. Temperature Broadband Gain & Return Loss Output IP3 vs. Temperature Absolute Maximum Ratings Typical Supply Current vs. Vdd Outline Drawing Pin Descriptions Application Circuit Evaluation PCB List of Materials