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| Preliminary GaAs IC 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.8-1.0 GHz AV109-73 Features I Single Positive 3 V Control Voltage I 35 dB Attenuation Range @ 0.9 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 AV109-73 GaAs IC FET voltage variable attenuator provides 35 dB attenuation range at 900 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. In addition, an external grounding capacitor is required. 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 0.8-1.0 GHz 0.8-1.0 GHz 0.5-2.5 GHz Min. Typ. 3.3 35 2.0:1 Max. Unit 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 14 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 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.8-1.0 GHz AV109-73 Typical Performance Data @ 0.9 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 VC (V) VSWR -15 VC (V) Attenuation vs. Control Voltage 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 Pin Out J1 CBL VC J2 1 2 3 GND VS Note: Exceeding these parameters may cause irreversible damage. DC blocking capacitors (CBL) and RF bypass capacitors (CBP) supplied externally. CBL = 25 pF for 900 MHz operation. CBP = 38 pF for 900 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 6 5 4 CBL CBP GND |
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