AS185-92

Preliminary PHEMT GaAs IC High Linearity Positive Control SPDT Switch DC–2 GHz AS185-92 Features I High Linearity (50 dBm IP3 @ 0.9 GHz) @3V I Low Insertion Loss (0.35 dB @ 0.9 GHz) I +3 V Operation I Ultra Miniature SC-70 6 Lead Package I PHEMT Process SC-70 6 Lead 0.079 (2.00 mm) ± 0.008 (0.20 mm) 0.0256 (0.65 mm) BSC 0.049 (1.25 mm) ± 0.004 (0.10 mm) 0.087 (2.20 mm) ± 0.008 (0.20 mm) PIN 1 INDICATOR 0.035 (0.90 mm) ± 0.004 (0.10 mm) 0.0055 (0.14 mm) ± 0.0015 (0.04 mm) 0.002 (0.005 mm) ± 0.002 (0.005 mm) 0.037 (0.95 mm) ± 0.006 (0.15 mm) 0.009 (0.23 mm) REF 0.010 (0.25 mm) ± 0.006 (0.15 mm) Description The AS185-92 is a PHEMT GaAs FET IC high linearity SPDT switch in a SC-70 6 lead plastic package.This switch has been designed for use where extremely high linearity, low insertion loss and ultra miniature package size are required. It can be controlled with positive, negative or a combination of both voltages. Some standard implementations include antenna changeover, T/R and diversity switching over 2 W. The AS185-92 switch can be used in many analog and digital wireless communication systems including cellular, GSM and DECT applications. 0.008 (0.20 mm) ± 0.004 (0.10 mm) Electrical Specifications at 25°C (0, +3 V) Parameter1 Insertion Loss3 Frequency2 DC–0.5 GHz DC–1.0 GHz DC–2.0 GHz DC–0.5 GHz DC–1.0 GHz DC–2.0 GHz DC–1.0 GHz DC–2.0 GHz 25 20 14 Min. Typ. 0.45 0.45 0.55 28 23 17 1.2:1 1.3:1 1.4:1 1.8:1 Max. 0.6 0.6 0.7 Unit dB dB dB dB dB dB Isolation VSWR4 Operating Characteristics at 25°C (0, +3 V) Parameter Switching Characteristics5 Condition Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) Video Feedthru 0/+3 V 0/+5 V For Two-tone Input Power +17 dBm 0/+3 V 0/+5 V 0.9 GHz 0.9 GHz 0.9 GHz 0.9 GHz Frequency Min. Typ. 60 100 50 +34 +38 +50 +57 Max. Unit ns ns mV dBm dBm dBm dBm Input Power for 1 dB Compression Intermodulation Intercept Point (IP3) 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 4. Insertion loss state. 5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth. 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. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 11/99A 1 PHEMT GaAs IC High Linearity Positive Control SPDT Switch DC–2 GHz AS185-92 Typical Performance Data (0, +3 V) 0.8 0.7 45 40 Insertion Loss (dB) 0.5 0.4 0.3 0.2 0.1 0.0 0.0 0.5 1.0 1.5 2.0 2.5 Isolation (dB) 0.6 35 30 25 20 15 10 0.0 0.5 1.0 1.5 2.0 2.5 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.0 0.5 1.0 1.5 2.0 2.5 Isolation vs. Frequency Absolute Maximum Ratings Characteristic RF Input Power Control Voltage Operating Temperature Storage Temperature ΘJC Value 10 W Max. > 900 MHz 0/+7 V Control -0.2 V, +8 V -40°C to +85°C -65°C to +150°C 25°C/W VSWR Pin Out VS J2 CBL V1 Frequency (GHz) VSWR vs. Frequency 1 2 GND 6 5 10 kΩ J1 Truth Table V1 0 VHigh V2 VHigh 0 J1–J2 Isolation Insertion Loss J1–J3 Insertion Loss Isolation J3 CBL CBL VHigh = +3 to +5 V (VS = VHigh ± 0.2 V). DC blocking capacitors (CBL) must be supplied externally. CBL = 100 pF for operating frequency >500 MHz. 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 11/99A 3 4 V2