Preliminary GaAs IC 35 dB Voltage Variable Attenuator Single Positive Control 0.5–2.5 GHz AV103-12 Features ■ Single Positive +5 V Control Voltage SOIC-8 PIN 8 0.050 (1.27 mm) BSC ■ 35 dB Attenuation Range @ 0.9 GHz ■ Less Than ±1 dB Attenuation Change Over Temperature 0.244 (6.20 mm) 0.228 (5.80 mm) PIN 1 INDICATOR ■ Excellent Linearity Performance 0.020 (0.51 mm) MAX. PIN 1 0.068 (1.73 mm) MAX. Description The AV103-12 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 9 dB/V slope, with input and output VSWR better than 2.1:1 over all states. Its attenuation range at 1900 MHz is 33 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 100 pF DC blocking capacitors. 0.197 (5.00 mm) 0.189 (4.80 mm) 0.010 (0.25 mm) 0.004 (0.10 mm) 0.016 MAX. (0.41 mm) x 45˚ CHAMFER 0.049 (1.24 mm) 0.016 (0.41 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 25°C (VS = 5 V) Parameter1 Frequency Insertion Loss (VC = 5 V) 0.5–1.0 GHz 1.0–2.0 GHz 2.0–2.5 GHz Maximum Attenuation (VC = 0 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. 28 31 30 29 28 Typ. Max. Unit 2.5 2.8 3.2 2.7 3.0 3.4 dB dB dB 32 35 34 33 32 dB dB dB dB dB 2.1:1 Operating Characteristics at 25°C (VS = 5 V) Parameter1 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. Typ. Max. 130 60 0.9 GHz Control Voltage (VC) nS nS 12 0.0 Unit dBm VS V Supply Voltage (VS) 5.0 V Control Current (IC) 1.1 x VC mA Supply Current (IS) 150 µA 1. All measurements made in a 50 Ω system, unless otherwise specified. 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. 12/99A 1 GaAs IC 35 dB Voltage Variable Attenuator Single Positive Control 0.5–2.5 GHz AV103-12 Typical Performance Data @ 0.9 GHz (Unless Otherwise Specified) 0 0 Attenuation (dB) Insertion Loss (dB) 5 -1 -2 -3 -4 15 20 25 30 35 40 -5 0.5 1.0 1.5 2.0 0.5 2.5 1.0 1.5 2.5 Frequency (GHz) Insertion Loss vs. Frequency Maximum Attenuation vs. Frequency 0 2.4 5 2.2 10 2.0 15 20 25 1.8 Input VSWR 1.6 30 1.4 35 1.2 Output VSWR 40 1.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VC VC Attenuation vs. Control Voltage VSWR vs. Control Voltage 3 35 Attenuation Normalized to 25˚C 2 Attenuation (dB) 30 IIP3 (dBm) 2.0 Frequency (GHz) VSWR Attenuation (dB) 10 25 20 15 10 1 -20˚C 0 +70˚C -1 +85˚C -2 5 -3 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 VC VC Input IP3 vs. Control Voltage 2 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 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. 12/99A GaAs IC 35 dB Voltage Variable Attenuator Single Positive Control 0.5–2.5 GHz Absolute Maximum Ratings Characteristic Pin Out Value Storage Temperature -65°C to +150°C J1 VS GND 5 -55°C to +125°C CBL VC CBL J2 20 k 4 Operating Temperature GND GND 6 -0.2 V, +6.5 V (Do not allow control voltage to exceed VS voltage.) 7 Control Voltage GND 8 +4 to +8 V 3 Supply Voltage 2 50 mW > 500 MHz 1 RF Input Power ΘJC AV103-12 25°C/W Note: Exceeding these parameters may cause irreversible damage. DC blocking capacitors (CBL) supplied externally. CBL = 100 pF for operation >500 MHz. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 12/99A 3