GaAs IC SPDT Reflective Switch DC–2.5 GHz AS239-12 Features SOIC-8 ■ Low Insertion Loss (0.4 dB @ 1 GHz) PIN 8 0.050 (1.27 mm) BSC ■ High Isolation (35 dB @ 1 GHz) ■ General Purpose Switching 0.244 (6.20 mm) 0.228 (5.80 mm) PIN 1 INDICATOR Description The AS239-12 is a low cost IC FET SPDT reflective switch in a plastic SOIC-8 package for commercial low cost, low power applications. The switch operates with -5 V, 0 V or operates with +5 V, 0 V when device is “floated” as shown on following page. This general purpose SPDT switch is used in many commercial telecommunication applications. 0.020 (0.51 mm) MAX. PIN 1 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) 0.016 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 (0, -5 V) Parameter1 Insertion Frequency2 Loss3 DC–0.1 DC–0.5 DC–1.0 DC–2.0 DC–2.5 GHz GHz GHz GHz GHz Isolation DC–0.1 DC–0.5 DC–1.0 DC–2.0 DC–2.5 GHz GHz GHz GHz GHz VSWR4 DC–2.0 GHz DC–2.5 GHz Min. 52 40 30 22 17 Typ. Max. Unit 0.3 0.3 0.4 0.5 0.7 0.6 0.6 0.7 0.8 0.9 dB dB dB dB dB 56 45 35 24 20 dB dB dB dB dB 1.2:1 1.5:1 Operating Characteristics at 25°C (0, -5 V) Parameter Switching Characteristics5 Condition Frequency Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru Input Power for 1 dB Compression Min. Typ. Max. Unit 8 30 25 ns ns mV 0.5–2.0 GHz 0.05 GHz +27 +21 dBm dBm 0.5–2.0 GHz 0.05 GHz +46 +40 dBm dBm Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm Control Voltages VLow = 0 to -0.2 V @ 20 µA Max. VHigh = -5 V @ 20 µA to -7 V @ 200 µA Max. 1. All measurements made in a 50 Ω system, unless otherwise specified. 2. DC = 300 kHz. 3. Insertion loss changes by 0.003 dB/°C. 4. Insertion loss state. 5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. 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 SPDT Reflective Switch DC–2.5 GHz AS239-12 Typical Performance Data (0, -5 V) 50 2.0 40 1.5 dB dB 30 1.0 20 0.5 10 0 0.0 0 0.5 1.0 1.5 2.0 2.5 0 3.0 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency Isolation vs. Frequency 3.0 3.0 Absolute Maximum Ratings Characteristic 2.5 2.0 1.5 Value RF Input Power 2 W > 500 MHz 0/-8 V 0.5 W @ 50 MHz 0/-8 V Control Voltage +0.2 V, -8 V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150°C ΘJC 25°C/W Note: Exceeding these parameters may cause irreversible damage. 1.0 0 0.5 1.0 1.5 2.0 2.5 Pin Out Frequency (GHz) VS VSWR vs. Frequency 10 kΩ 8 GND -5 Isolation Insertion Loss -5 0 Insertion Loss Isolation V1 V2 J1–J2 J1–J3 VHigh 0 Isolation Insertion Loss 0 VHigh Insertion Loss Isolation J3 CBP CBL CBL V2 5 0 6 J1–J3 7 J1–J2 4 V2 3 V1 2 GND J2 V1 Operation1 DC blocking (CBL), bypass (CBP) capacitors and biasing resistor supplied externally. CBL = 100 pF, CBP = 1000 pF for operation >500 MHz. VHigh = +5 to +7 V (VS = VHigh ± 0.2 V). 1. Refer to Application Notes for further information. 2 CBP CBL Negative Operation Positive 1 J1 Truth Table Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 3/99A