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| 18-40 GHz Surface Mount Voltage Variable Attenuator AV850M2-A2 Patent Pending Features s Surface Mount Package s 30 dB Attenuation Range s +10 dBm P1 dB All Attenuation States s Low Insertion Loss s 100% RF and DC Testing Description The AV850M2-A2 is a broadband millimeterwave voltage variable attenuator in a rugged surface mount package that is compatible with high-volume solder installation. The attenuator is designed for use in millimeterwave communication and sensor systems as a variable attenuation stage in the receiver or transmitter chain when wide dynamic range and high linearity are required. The robust ceramic surface mount package provides excellent electrical performance and a high degree of environmental protection for long-term reliability. All attenuators are screened at the operating frequencies prior to shipment for guaranteed performance. Attenuator is targeted for high-volume millimeterwave applications such as point-to-point and point-to-multipoint wireless communications systems. Control voltage VC2 sets the attenuation level while VC1 adjusts return loss for the part. Pin Out N/C VC2 N/C RF In RF Out AV850M2-A2 YYWW Orientation Indicated by Missing Castellations N/C VC1 N/C Electrical Specifications at 25C RF Parameter Bandwidth Insertion Loss at Minimum Attenuation Insertion Loss at Maximum Attenuation Input Return Loss Output Return Loss Output Power at 1 dB Gain Compression (For All Attenuation Levels) Temperature Coefficient of Attenuation Symbol BW ILMin ILMax RLI RLO P1 dB dG/dT 8 27 Min. 18 3 33 10 10 10 -0.002 Typ. Max. 40 4 Unit GHz dB dBm dB dB dBm dB/C DC Parameter Control Current Symbol IC1 + IC2 Min. Typ. <1 Max. Unit mA Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 6/00A 1 18-40 GHz Surface Mount Voltage Variable Attenuator AV850M2-A2 Typical Performance Data 0 VC2 = -3 V 25 18 GHz 20 15 10 5 0 23 28 33 38 0 5 10 15 20 25 30 38 GHz -2 V Attenuation (dB) -10 -1.5 V -20 -1.0 V -0.5 V -30 VC2 = 0 V -40 18 Input Power at 1 dB Compression (dBm) Frequency (GHz) Attenuation (dB) Attenuation vs. Frequency 1 dB Compression vs. Attenuation -5 18 GHz Absolute Maximum Ratings Characteristic Operating Temperature (TC) 23 GHz Storage Temperature (TST) Control Voltage (VC1) Control Voltage (VC2) 28 GHz Power In (PIN) Value -55C to +90C -65C to +150C -7 VDC -7 VDC 30 dBm Attenuation (dB) -15 -25 -35 33 GHz -45 -3 -2 -1 38 GHz 0 Control Voltage VC2 (V) Attenuation vs. Control Voltage Outline 0.251 (6.38 mm) 2X 0.044 (1.12 mm) 0.204 (5.18 mm) C L 8X 0.020 (0.51 mm) C L 2X 0.129 (3.28 mm) 0.241 (6.12 mm) 0.040 (1.02 mm) 2X 0.085 (2.16 mm) 2X 0.043 (1.09 mm) 2X 0.064 (1.63 mm) 0.056 (1.42 mm) 0.194 (4.93 mm) 0.016 (0.41 mm) 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 6/00A 18-40 GHz Surface Mount Voltage Variable Attenuator AV850M2-A2 Typical S-Parameters at 25C (VC1 = 0 V, VC2 = -2.0 V) Frequency (GHz) 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 S11 Mag. (dB) -14.37 -10.98 -8.31 -9.35 -14.03 -18.93 -12.60 -10.72 -11.51 -11.48 -10.31 -10.67 -12.16 -12.40 -11.55 -11.20 -12.60 -13.69 -1.17 -3.80 -6.06 Ang. (Deg.) 38.2 -26.8 -97.9 -139.2 -170.7 -133.4 -133.0 -160.2 -178.6 173.2 158.3 137.2 125.6 120.7 108.5 78.8 49.9 -163.7 91.4 13.8 -20.5 Mag. (dB) -1.33 -1.64 -1.94 -4.78 -4.90 -5.43 -6.20 -6.69 -7.04 -7.76 -8.60 -8.99 -9.03 -9.57 -10.37 -10.96 -11.74 -16.18 -21.20 -16.82 -18.90 S21 Ang. (Deg.) 100.4 48.7 -1.6 -57.2 -112.0 -167.8 137.5 85.1 31.5 -24.1 -77.1 -130.8 174.1 115.3 54.3 -8.8 -79.2 -170.9 -117.9 142.0 69.6 Mag. (dB) -1.32 -1.64 -1.91 -4.80 -4.94 -5.46 -5.99 -6.41 -6.80 -7.75 -8.33 -8.54 -8.96 -9.58 -10.06 -10.40 -11.93 -16.25 -20.84 -17.75 -18.69 S12 Ang. (Deg.) 100.5 48.9 -1.3 -57.1 -112.1 -167.9 138.1 85.3 31.5 -23.9 -77.0 -131.2 173.1 114.4 53.8 -11.0 -80.8 -171.4 -125.3 140.9 67.7 Mag. (dB) -9.22 -8.79 -9.30 -11.69 -16.49 -14.19 -10.86 -11.50 -16.43 -17.54 -12.63 -12.30 -14.97 -22.73 -27.99 -18.34 -13.31 -8.52 -1.21 -2.88 -5.77 S22 Ang. (Deg.) -62.9 -98.0 -128.6 -154.9 -155.6 -128.9 -150.9 179.0 163.2 -159.4 -174.8 151.0 115.2 66.2 -73.0 -114.6 -137.7 -158.5 132.6 63.1 -1.7 Typical S-Parameters at 25C (VC1 = 0 V, VC2 = -1.5 V) Frequency (GHz) 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 S11 Mag. (dB) -10.75 -9.15 -6.20 -6.78 -7.73 -8.76 -9.99 -12.10 -15.52 -20.66 -20.36 -15.81 -12.49 -10.17 -8.90 -8.01 -8.54 -19.54 -0.14 -1.73 -3.65 Ang. (Deg.) -12.4 -54.8 -95.6 -126.0 -151.5 -172.7 166.5 148.4 135.5 134.9 178.8 -177.1 172.3 151.7 129.3 97.7 63.5 -160.6 91.4 11.0 -27.5 Mag. (dB) -4.64 -4.88 -13.10 -13.60 -13.88 -14.32 -15.36 -16.59 -17.65 -18.59 -19.68 -20.60 -21.70 -23.16 -24.30 -25.88 -28.12 -31.87 -45.47 -34.72 -35.09 S21 Ang. (Deg.) 98.3 46.6 -8.1 -60.1 -113.4 -167.4 138.6 84.8 32.0 -19.7 -72.6 -127.5 177.9 122.6 62.1 -0.2 -64.0 -163.0 -81.4 173.4 97.1 Mag. (dB) -4.63 -4.74 -13.19 -13.41 -13.55 -14.31 -15.49 -16.42 -17.23 -18.57 -19.38 -20.15 -21.85 -22.76 -23.75 -26.17 -28.13 -30.84 -48.12 -36.37 -36.54 S12 Ang. (Deg.) 98.4 46.7 -7.7 -59.8 -113.2 -167.6 138.7 84.9 32.1 -19.1 -72.9 -128.3 177.7 122.0 60.9 -3.5 -65.7 -159.6 -107.4 173.9 102.4 Mag. (dB) -5.28 -5.86 -7.30 -10.21 -17.10 -27.30 -14.32 -10.57 -9.06 -9.05 -9.43 -10.93 -14.17 -16.34 -13.69 -10.76 -9.37 -10.51 -0.44 -1.55 -4.82 S22 Ang. (Deg.) -76.6 -115.3 -150.7 175.2 142.1 -78.3 -103.7 -129.9 -156.0 176.8 149.7 115.0 69.5 -7.0 -82.6 -131.7 -170.3 174.9 129.9 49.4 -18.549 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 6/00A 3 18-40 GHz Surface Mount Voltage Variable Attenuator AV850M2-A2 "Alpha Two" Surface Mount Package Handling and Mounting Millimeterwave components require careful mounting design to maintain optimal performance. The Alpha Two surface mount package (patent pending) provides a rugged and repeatable electrical connection using standard solder techniques. DC Connections 64 Via Holes RF In RF Out Handling The Alpha Two surface mount package is very rugged. However, due to ceramic's brittle nature, one should exercise care when handling with metal tools. Do not apply heavy pressure to the lid. Vacuum tools may be used to pick and place this part. Only personnel trained in both ESD precautions and handling precautions should be allowed to handle these packages. DC Connections Footprint Geometry for Alpha Two Surface Mount Package Mounting the Package The Alpha Two surface mount package is compatible with high-volume surface mount installation using solder. RF and DC connections are accomplished with metallized edge castellations that hold solder fillets. Ground connections are accomplished by both metallized edge castellations and filled vias to the bottom of the package. Care should be taken to ensure that there are no voids or gaps in the solder so that a good RF, DC, and ground contact is maintained. Package Construction The Alpha Two surface mount package consists of a base and a lid. The package base is ceramic with filled vias and plated castellations. The package lid is unplated alumina. The lid seal is epoxy. Mounting Design The Alpha Two surface mount package is installed on top of a printed circuit board on a specially designed footprint. Mounting footprint geometry will be supplied by Alpha Industries in electronic formats or paper drawing. DC Lines RF In Printed Ccircuit Board Rogers 4003 0.008" (0.20 mm) Thick Solder Fillets RF Out Electrically & Thermally Conductive Ground Plane Alpha Two Surface Mount Package Installation 4 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 6/00A |
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