GaAs IC SPDT Reflective Switch Positive Control DC–2.5 GHz AS125-73 Features SOT-6 ■ Low Insertion Loss (0.4 dB @ 0.9 GHz) 0.074 (1.90 mm REF.) ■ Complementary Positive Control Voltages (0/+3 V to 0/+5 V) ■ Positive Voltage Supply (+3 to +5 V) ■ Low DC Power Consumption 0.126 (3.20 mm) 0.087 (2.20 mm) PIN 6 0.071 (1.80 mm) 0.052 (1.30 mm) PIN 1 INDICATOR PIN 1 0.020 (0.51 mm) 0.014 (0.350 mm) 0.037 (0.95 mm) REF. ■ Ultra Miniature 6 Lead SOT-6 Package Description The AS125-73 is a GaAs IC FET SPDT reflective switch in the SOT-6 plastic package for commercial applications. For positive operation it requires a fixed positive bias (VS) on the J1 line and DC blocks on all RF lines. This switch can also be operated with complementary negative voltage (no VS or blocking caps required). The AS125-73 provides a low cost solution for IF switching requirements in dual band and dual mode subscribers. 0.057 (1.45 mm) 0.035 (0.90 mm) 0.006 (0.15 mm) 0.000 (0.00 mm) 0.012 (0.30 mm) TYP. 5.0˚ ± 1˚ 0.014 (0.26 mm) 0.004 (0.10 mm) 5.0˚ ± 1˚ 0.122 (3.10 mm) 0.106 (2.70 mm) 0.022 (0.61 mm) 0.004 (0.10 mm) Electrical Specifications at 25°C (0, +3 V) Parameter1 Frequency2 Insertion Loss3 DC–0.5 DC–1.0 DC–2.0 DC–2.5 GHz GHz GHz GHz Isolation DC–0.5 DC–1.0 DC–2.0 DC–2.5 GHz GHz GHz GHz VSWR4 DC–1.0 GHz DC–2.5 GHz Min. 22 17 11 10 Typ. Max. Unit 0.4 0.45 0.6 0.9 0.5 0.6 0.8 1.1 dB dB dB dB 25 20 14 13 dB dB dB dB 1.2:1 1.5:1 1.3:1 1.7:1 Typ. Max. Operating Characteristics at 25°C (0, +3 V) Parameter Switching Characteristics5 Input Power for 1 dB Compression Condition Frequency Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru Min. Unit 10 20 25 ns ns mV 0/+3 V 0/+5 V 0.5–2.0 GHz 0.5–2.0 GHz +21 +28 dBm dBm Intermodulation Intercept Point (IP3) For Two-tone Input Power +13 dBm 0.5–2.0 GHz +45 dBm Control Voltages VLow = 0 to 0.2 V @ 20 µA Max. VHigh = +3 V @ 100 µA Max. to +5 V @ 200 µA Max. VS = VHigh ± 0.2 V 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 Positive Control DC–2.5 GHz AS125-73 Typical Performance Data (0, +3 V) 1.4 40 1.2 35 30 25 0.8 dB dB 1.0 0.6 20 15 0.4 10 0.2 5 0 0 0 0.5 1.0 1.5 2.0 0 2.5 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency Isolation vs. Frequency Absolute Maximum Ratings 2.0 Characteristic 1.8 2 W > 500 MHz 0/+7 V Control Control Voltage -0.2 V, +8 V 1.6 1.4 Value RF Input Power Operating Temperature -40°C to +125°C Storage Temperature -50°C to +150°C ΘJC 1.2 25°C/W 1 0 0.5 1.0 1.5 2.0 2.5 Pin Out Frequency (GHz) V1 V2 J1–J2 J1–J3 0 VHigh Isolation Insertion VHigh 0 Insertion Isolation VHigh = +3 to +5 V (VS = VHigh ± 0.2 V). 2 V2 4 J1 5 Positive Operation 6 GND Truth Table V1 3 CBL 2 J3 1 VSWR vs. Frequency CBL CBL J2 10 kΩ VS DC blocking capacitors (CBL) and biasing resistor must be supplied externally for positive voltage operation. 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. 3/99A