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| Preliminary GaAs IC 30 dB Voltage Variable Attenuator Single Positive 3 V Control 1.7-2.5 GHz AV110-73 Features I Single Positive 3 V Control Voltage I 33 dB Attenuation Range @ 1.9 GHz I Excellent Linearity Performance SOT-6 0.074 (1.90 mm REF.) PIN 6 PIN 1 INDICATOR PIN 1 0.020 (0.51 mm) 0.014 (0.350 mm) 0.057 (1.45 mm) 0.035 (0.90 mm) 0.126 (3.20 mm) 0.087 (2.20 mm) 0.071 (1.80 mm) 0.052 (1.30 mm) Description The AV110-73 GaAs IC FET voltage variable attenuator provides 33 dB attenuation range at 1900 MHz controlled by a single positive voltage. The VVA has a linear transfer curve of 12 dB/V slope, with input and output VSWR better than 2:1 over all states. It operates with supply voltage of +3 V and control voltage of 0 V to +3 V in a low cost SOT-6 package. The RF ports require 25 pF DC blocking capacitors. 0.037 (0.95 mm) REF. 0.012 (0.30 mm) TYP. 0.014 (0.26 mm) 0.004 (0.10 mm) 5.0 1 0.006 (0.15 mm) 0.000 (0.00 mm) 5.0 1 0.122 (3.10 mm) 0.106 (2.70 mm) 0.022 (0.61 mm) 0.004 (0.10 mm) Electrical Specifications at 25C (VS = 3 V) Parameter1 Insertion Loss (VC = 0 V) Maximum Attenuation (VC = 3 V)2 VSWR (I/O)3 Frequency 1.7-2.0 GHz 2.0-2.5 GHz 1.7-2.0 GHz 2.0-2.5 GHz 1.7-2.5 GHz Min. Typ. 3.5 3.8 33 28 2.0:1 Max. Unit dB dB dB dB Operating Characteristics at 25C (VS = 3 V) Parameter1 Switching Characteristics Intermodulation Intercept Point (IIP3)3 Control Voltage (VC) Supply Voltage (VS) Control Current (IC) Supply Current (IS) 1. All measurements made in a 50 system, unless otherwise specified. 2. Maximum attenuation includes insertion loss. 3. For worst case state. Condition Rise, On (10/90% or 50% CTL to 90% RF) Fall, Off (90/10% RF or 50% CTL to 10% RF) For Two-tone Input Power +0 dBm Frequency Min. Typ. 1.0 0.3 Max. Unit S S dBm 0.9 GHz 0.0 12 VS 3 0.2 x VC 150 V mA A Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 10/99A 1 GaAs IC 30 dB Voltage Variable Attenuator Single Positive 3 V Control 1.7-2.5 GHz AV110-73 Typical Performance Data @ 1.9 GHz (Unless Otherwise Specified) 0 -5 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 2.0 2.5 3.0 Output Input Attenuation (dB) -10 -20 -25 -30 -35 -40 VControl (V) VSWR -15 VC (V) Attenuation vs. Control Voltage @ 1900 MHz 0 -5 VSWR vs. Control Voltage Absolute Maximum Ratings Characteristic RF Input Power Supply Voltage Control Voltage Operating Temperature Storage Temperature JC Value 50 mW > 500 MHz +7 V +3.3 V -40C to +85C -65C to +150C 25C/W Attenuation (dB) -10 -15 -20 -25 -30 -35 0 0.5 1.0 1.5 2.0 2.5 3.0 Note: Exceeding these parameters may cause irreversible damage. VControl (V) Attenuation vs. Control Voltage @ 2400 MHz Pin Out J1 CBL VC J2 1 2 3 GND VS 6 5 4 CBL GND DC blocking capacitors (CBL) supplied externally. CBL = 25 pF for 1900 MHz operation. 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 10/99A |
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