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| Preliminary GaAs IC 25 dB Voltage Variable Attenuator Single Positive Control 0.5-2.5 GHz AV104-12 Features s Single Positive +5 V Control Voltage s 25 dB Attenuation Range @ 0.9 GHz s High IP3 (20 dBm @ 0.9 GHz) s Excellent Linearity Performance PIN 1 0.020 (0.51 mm) MAX. 0.049 (1.24 mm) 0.016 (0.41 mm) 0.016 MAX. (0.41 mm) x 45 CHAMFER PIN 1 INDICATOR 0.244 (6.20 mm) 0.228 (5.80 mm) SOIC-8 PIN 8 0.050 (1.27 mm) BSC Description The AV104-12 GaAs IC FET voltage variable attenuator provides 25 dB attenuation range at 900 MHz controlled by a single positive voltage. The VVA has a linear transfer curve of 5 dB/V slope, with input and output VSWR better than 1.4:1 over all states. Its attenuation range at 1900 MHz is 22 dB. It operates with supply voltage of +5 V and control voltage of 0 V to +5 V in a low cost SOIC-8 package. The RF ports require 25 pF DC blocking capacitors. 0.068 (1.73 mm) MAX. 0.197 (5.00 mm) 0.189 (4.80 mm) 0.010 (0.25 mm) 0.004 (0.10 mm) 0.158 (4.00 mm) 0.150 (3.80 mm) 0.010 (0.25 mm) 0.007 (0.17 mm) 8 MAX. Electrical Specifications at 25C (VS = 5 V) Parameter1 Insertion Loss (VC = 5 V) Frequency 0.5-1.0 GHz 1.0-2.0 GHz 2.0-2.5 GHz 0.5-0.8 0.8-1.0 1.0-1.7 1.7-2.0 2.0-2.5 GHz GHz GHz GHz GHz 16 21 19 17 15 Min. Typ. 2.7 3.0 3.2 20 25 23 21 19 1.4:1 Max. 3.0 3.4 3.7 Unit dB dB dB dB dB dB dB dB Maximum Attenuation (VC = 0 V)2 VSWR (I/O)3 0.5-2.5 GHz Operating Characteristics at 25C (VS = 5 V) Parameter 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 1.5 Max. Unit S S dBm 0.9 GHz 0.0 20 VS 5.0 2.5 2.5 V 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. 3/99A 1 GaAs IC 25 dB Voltage Variable Attenuator Single Positive Control 0.5-2.5 GHz AV104-12 Typical Performance Data @ 0.9 GHz (Unless Otherwise Specified) 0 0 -5 Insertion Loss (dB) -1 Attenuation (dB) 0.5 1.0 1.5 2.0 2.5 -2 -3 -4 -5 -10 -15 -20 -25 -30 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Frequency (GHz) VC (V) Insertion Loss vs. Frequency Attenuation vs. Control Voltage 40 35 1.5 1.4 30 IIP3 (dBm) Input Output VSWR 1.3 1.2 1.1 1 0 25 20 15 10 5 0 1 2 3 4 5 0 1 2 3 4 5 VC (V) VC (V) VSWR vs. Control Voltage Input IP3 vs. Control Voltage 1.5 Attenuation Normalized to 25C 1.0 Attenuation (dB) 0.5 0 -0.5 -1.0 -1.5 0 85C -20C 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VC (V) Attenuation vs. Control Voltage Over Temperature 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 3/99A GaAs IC 25 dB Voltage Variable Attenuator Single Positive Control 0.5-2.5 GHz AV104-12 Absolute Maximum Ratings Characteristic RF Input Power Supply Voltage Control Voltage Operating Temperature Storage Temperature JC Value 100 mW > 500 MHz +4 to +8 V -0.2 V < VC < VS +0.2 V -40C to +85C -65C to +150C 25C/W Pin Out GND GND J2 1 2 8 GND 7 CBL GND J1 3 6 CBL VS 4 5 Note: Exceeding these parameters may cause irreversible damage. VC DC blocking capacitors (CBL) supplied externally. CBL = 25 pF for operation >500 MHz. Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 3/99A 3 |
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