Preliminary GaAs IC 35 dB Voltage Variable Attenuator Single Positive 3 V Control 0.5–2.5 GHz AV107-59 Features MSOP-8 ■ Single Positive +3 V Control Voltage 0.0256 (0.65 mm) TYP. ■ 35 dB Attenuation Range @ 0.9 GHz ■ Miniature Low Cost MSOP-8 Package Description PIN 1 INDICATOR 0.118 (3.00 mm) ± 0.004 (0.1 mm) SQ. PIN 1 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. 0.012 (0.30 mm) 7.0˚ 0.038 (0.95 mm) TYP. 0.030 (0.75 mm) 0.017 (0.43 mm) 0.193 (4.90 mm) REF. + 0.006 (0.15 mm) - 0.002 (0.05 mm) 0.007 (0.18 mm) ± 0.005 (0.12 mm) 0.006 (0.15 mm) 0.002 (0.05 mm) 8.0˚ MAX. 0.028 (0.70 mm) 0.016 (0.40 mm) Electrical Specifications at 25°C (VS = 3 V) Parameter1 Frequency Insertion Loss (VC = 0 V) 0.5–1.0 GHz 1.0–2.0 GHz 2.0–2.5 GHz Maximum Attenuation (VC = 3 V)2 0.5–0.8 0.8–1.0 1.0–1.7 1.7–2.0 2.0–2.5 VSWR (I/O)3 0.5–2.5 GHz GHz GHz GHz GHz GHz Min. 22 30 22 17 15 Typ. Max. Unit 3.4 3.5 3.8 3.8 4.0 4.3 dB dB dB 25 33 25 20 19 dB dB dB dB dB 1.8:1 2.0:1 Typ. Max. Operating Characteristics at 25°C (VS = 3 V) Parameter Condition Switching Characteristics Rise, On (10/90% or 50% CTL to 90% RF) Fall, Off (90/10% RF or 50% CTL to 10% RF) Intermodulation Intercept Point (IIP3)3 For Two-tone Input Power +0 dBm Frequency Min. 0.9 GHz Control Voltage (VC) 0.0 Supply Voltage (VS) 2.7 Control Current (IC) Supply Current (IS) Unit 1.0 0.3 µS µS 15 dBm VS V 3 V 0.2 x VC 150 mA µA 1. All measurements made using 40 pF RF bypass capacitor. 2. Maximum attenuation includes insertion loss. 3. For worst case state. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • 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) Insertion Loss (dB) -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 -10 -15 -20 -25 -30 -35 -40 0.5 1.0 1.5 2.0 2.5 0.50 1.00 1.50 2.50 Frequency (GHz) Insertion Loss vs. Frequency Maximum Attenuation vs. Frequency 0 2.0 -5 1.9 -40˚ to +85˚ 1.8 -10 1.7 -15 -20 -25 1.6 1.5 Input 1.4 1.3 -30 1.2 -35 1.1 -40 Output 1.0 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 VC (V) 1.5 2.0 2.5 3.0 VC (V) Attenuation vs. Control Voltage VSWR vs. Control Voltage 5 30 Attenuation Normalized to 25˚C 4 Insertion Loss (dB) 25 IIP3 (dBm) 2.00 Frequency (GHz) VSWR Attenuation (dB) -5 20 15 10 5 3 +85˚C 2 1 +70˚C 0 +25˚C -1 -2 -20˚C -3 -4 0 -5 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 VC (V) 1.5 2.0 2.5 3.0 VC (V) Input IP3 vs. Control Voltage 2 1.0 Attenuation vs. Control Voltage Over Temperature Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • 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 Absolute Maximum Ratings Characteristic Pin Out Value ΘJC 25°C/W Note: Exceeding these parameters may cause irreversible damage. 5 -65°C to +150°C 6 -40°C to +85°C Storage Temperature GND VC CBL VS GND CBL 4 Operating Temperature GND 3 +3.3 V J1 7 +7 V 8 Supply Voltage CBP GND 2 50 mW > 500 MHz 1 RF Input Power Control Voltage AV107-59 J2 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 [email protected] • www.alphaind.com Specifications subject to change without notice. 3/99A 3