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| Preliminary GaAs IC 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.5-2.5 GHz AV107-59 Features s Single Positive +3 V Control Voltage s 35 dB Attenuation Range @ 0.9 GHz s Miniature Low Cost MSOP-8 Package PIN 1 INDICATOR MSOP-8 0.0256 (0.65 mm) TYP. 0.118 (3.00 mm) 0.004 (0.1 mm) SQ. 0.193 (4.90 mm) REF. Description The AV107-59 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. Its attenuation range at 1900 MHz is 25 dB. It operates with supply voltage of +3 V and control voltage of 0 V to +3 V in a low cost MSOP-8 package. The RF ports require 25 pF DC blocking capacitors. In addition an external grounding capacitor is required. PIN 1 0.012 (0.30 mm) + 0.006 (0.15 mm) - 0.002 (0.05 mm) 7.0 0.038 (0.95 mm) TYP. 0.030 (0.75 mm) 0.017 (0.43 mm) 0.007 (0.18 mm) 0.005 (0.12 mm) 8.0 MAX. 0.006 (0.15 mm) 0.002 (0.05 mm) 0.028 (0.70 mm) 0.016 (0.40 mm) Electrical Specifications at 25C (VS = 3 V) Parameter1 Insertion Loss (VC = 0 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 22 30 22 17 15 Min. Typ. 3.4 3.5 3.8 25 33 25 20 19 1.8:1 2.0:1 Max. 3.8 4.0 4.3 Unit dB dB dB dB dB dB dB dB Maximum Attenuation (VC = 3 V)2 VSWR (I/O)3 0.5-2.5 GHz Operating Characteristics at 25C (VS = 3 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 using 40 pF RF bypass capacitor. 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 2.7 15 VS 3 0.2 x VC 150 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 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.5-2.5 GHz AV107-59 Typical Performance Data @ 0.9 GHz (Unless Otherwise Specified) 0.0 0 Maximum Attenuation (dB) 0.5 1.0 1.5 2.0 2.5 -0.5 -5 -10 -15 -20 -25 -30 -35 -40 0.50 1.00 1.50 2.00 2.50 Insertion Loss (dB) -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency 0 -5 Maximum Attenuation vs. Frequency 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 Output 0 0.5 1.0 1.5 2.0 2.5 3.0 Input -40 to +85 Attenuation (dB) -10 -15 -20 -25 -30 -35 -40 0 0.5 1.0 1.5 2.0 2.5 3.0 VC (V) VSWR VC (V) Attenuation vs. Control Voltage 30 25 5 4 VSWR vs. Control Voltage Attenuation Normalized to 25C +85C +70C +25C Insertion Loss (dB) 3 2 1 0 -1 -2 -3 -4 -5 IIP3 (dBm) 20 15 10 5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 -20C 0 0.5 1.0 1.5 2.0 2.5 3.0 VC (V) VC (V) Input IP3 vs. Control Voltage 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 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.5-2.5 GHz AV107-59 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 CBP GND GND J1 CBL VS 4 5 GND CBL GND VC 3 6 J2 1 2 8 7 Note: Exceeding these parameters may cause irreversible damage. DC blocking capacitors (CBL) and RF bypass capacitors (CBP) supplied externally. CBP = 40 pF for 900 MHz operation. CBL = 25 pF for 900 MHz operation. 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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