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| GaAs 30 dB IC Voltage Variable Dual Control Attenuator DC-8 GHz AT006N3-93 Features I Dual Control Voltages I Low Insertion Loss I Broadband DC-8 GHz I Small Low Cost "Chip on Board" Package -93 0.160 0.140 0.100 0.060 Description The AT006N3-93 GHz GaAs FET IC non-reflective bridged "T" attenuator provides up to 30 dB of "nonreflective" attenuation. The control voltage requirements are 0 to -5 V. This attenuator has two independent voltage controls, which must be adjusted in a prescribed manner to obtain the desired attenuation under non-reflective conditions. Refer to the Application Notes section, "Dual Voltage Controlled VVA." Applications for these fast attenuators are AGC circuits and variable level control in various military and telecommunications systems. 0.056 0.020 0.000 0.000 0.140 Electrical Specifications at 25C Parameter1 Insertion Loss2 Frequency4 DC-2.0 GHz DC-4.0 GHz DC-6.0 GHz DC-8.0 GHz DC-2.0 GHz DC-4.0 GHz DC-6.0 GHz DC-8.0 GHz DC-2.0 GHz DC-4.0 GHz DC-8.0 GHz 30 29 26 24 Min. Typ. 0.8 1.0 1.2 1.9 35 33 30 28 1.25:1 1.40:1 1.50:1 1.3:1 1.5:1 1.6:1 Max. 1.0 1.2 1.4 2.0 Unit dB dB dB dB dB dB dB dB Attenuation Range VSWR (I/O) Operating Characteristics at 25C Parameter Switching Characteristics Condition Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru3 For All Attenuation Levels VLow = 0 to -0.2 V @ 20 A Max. VHigh = -5 V @ 50 A Max. 0.5-6 GHz 0.05 GHz Frequency Min. Typ. 7 10 20 0 -3 Max. Unit ns ns mV dBm dBm Input Power for 1 dB Compression Control Voltages 1. All measurements made in a 50 system, unless otherwise specified. 2. Insertion loss changes by 0.003 dB/C. 3. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. 4. DC = 300 kHz. Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 9/99A 1 GaAs 30 dB IC Voltage Variable Dual Control Attenuator DC-8 GHz AT006N3-93 Typical Transfer Curve F = 1 GHz, VP1 = -3.5 V 0 50 40 30 20 10 0 DC V1 V2 Control Voltages (V) V1 (Series) -2.0 -3.0 V2 (Shunt) -4.0 -5.0 0 5 10 15 20 25 30 35 Attenuation (dB) -1.0 1 2 3 4 5 6 7 8 Relative Attenuation (dB) Frequency (GHz) Relative Attenuation vs. Control Voltages F = 50 MHz Attenuation (By State) vs. Frequency PIN at 1.0 dB Compression (dBm) 20 15 10 5 0 -5 0 5 10 15 20 25 30 Absolute Maximum Ratings Characteristic RF Input Power (RF In) Control Voltage (VC) Operating Temperature (TOP) Storage Temperature (TST) Thermal Resistance (JC) Value 10 mW > 500 MHz 4 mW @ 50 MHz +0.2 V, -10 V -40C to +90C -65C to +150C 25C/W -93 0.160 0.150 0.130 0.112 0.140 0.110 0.090 0.070 Attenuation (dB) Attenuation vs. 1.0 dB Compression Point Pin Out GND V2 V1 GND RF GND GND RF Glass Pt/Pd/Au 0.048 0.030 0.010 0.000 0.000 0.020 0.038 0.102 0.121 0.140 0.050 0.020 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 9/99A |
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