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| GaAs IC Control FET Series DC-2.5 GHz AF002C1-39, AF002C4-39 Features Low Cost SOT-23 Package Series or Shunt Configuration Low DC Current Drain Ideal Switch Building Blocks Pin Diode Replacements High Power Antenna Switches SOT-23 0.120 (3.05 mm) 0.110 (2.79 mm) 3 0.018 (0.45 mm) 0.015 (0.38 mm) 0.055 (1.40 mm) 0.047 (1.19 mm) 0.024 (0.61 mm) 0.018 (0.45 mm) 0.080 (2.03 mm) 0.070 (1.78 mm) 0.007 (0.18 mm) 0.003 (0.08 mm) 1 2 0.104 (2.64 mm) 0.083 (2.10 mm) 0.040 (1.02 mm) 0.037 (0.94 mm) Description This group of GaAs control FETs can be used in both series and shunt configurations. They incorporate on-chip circuitry that eliminates the need for extra bias components and minimizes power drain to typically 25 W. These features make the device ideal replacements for PIN diodes, where low DC drain is critical. Isolation performance degrades at higher frequencies due to package parasitics. They can be tuned out in narrow band applications as shown in the circuit examples on the following pages. 0.027 (0.69 mm) REF. 0.004 (0.10 mm) 0.0005 (0.01 mm) 0.045 (1.14 mm) 0.035 (0.89 mm) Electrical Specifications at 25C (0, -5 V) Part Number1 AF002C1-39 Frequency2 (GHz) DC-0.5 GHz DC-1.0 GHz DC-2.5 GHz AF002C4-39 DC-0.5 GHz DC-1.0 GHz DC-2.5 GHz RON ()3 Typ. 6.4 6.4 6.4 0.8 0.8 0.8 Max. 9.0 9.0 9.0 1.1 1.1 1.1 Insertion Loss (dB)4,5 Series 0.50 0.60 0.70 0.20 0.25 0.30 Shunt 0.10 0.15 0.20 0.15 0.25 2.00 COFF (pF)6 Typ. 0.13 0.13 0.13 1.10 1.10 1.10 Max. 0.25 0.25 0.25 1.50 1.50 1.50 Isolation (db)5 Series 25 17 13 11 6 3 Shunt 12 8 3 15 9 4 P-1 dB (W) Typ. 0.5 1.0 1.0 6 7 7 Operating Characteristics at 25C (0, -5 V) Parameter Switching Characteristics Control Voltages Condition Rise, Fall (10/90% or 90/10% RF) On, Off (50% CTL to 90/10% RF) VLow = 0 to -0.2 V @ 20 A Max. VHigh = -5 V @ 50 A to -9 V @ 200 A Max. Frequency Min. Typ. 6 12 Max. Unit ns ns 1. All measurements made in a 50 system, unless otherwise specified. 2. DC = 300 kHz. 3. RON - resistance in in low impedance state when "0" V is applied to Gate (G). 4. Insertion loss changes by 0.003 dB/C. 5. Insertion loss and isolation typical values. 6. COFF - capacitance (pF) in high impedance state when -5 V is applied to Gate (G). Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 12/02A 1 GaAs IC Control FET Series DC-2.5 GHz AF002C1-39, AF002C4-39 Typical Performance Data (0, -5 V) 0.8 0.7 50 45 40 0.6 0.5 0.4 0.3 0.2 0.1 0 0 0.5 1 1.5 2 2.5 3 C4 C1 35 30 25 20 15 10 5 0 0 0.5 1 1.5 2 2.5 3 C4 C1 Insertion Loss (dB) Frequency (GHz) Isolation (dB) Frequency (GHz) Insertion Loss vs. Frequency Series Configuration Isolation vs. Frequency Series Configuration 0.8 0.7 30 25 Insertion Loss (dB) 0.6 Isolation (dB) 0.5 0.4 0.3 0.2 0.1 C1 0 0 0.5 1 1.5 2 2.5 3 C4 20 C4 15 10 5 0 C1 0 0.5 1 1.5 2 2.5 3 Frequency (GHz) Frequency (GHz) Insertion Loss vs. Frequency Shunt Configuration Isolation vs. Frequency Shunt Configuration Absolute Maximum Ratings AF002C1-39 Characteristic RF Input Power Control Voltage Operating Temperature Storage Temperature JC Value 2 W > 500 MHz 0/-8 V 0.5 W @ 50 MHz 0/-8 V +0.2 V, -10 V -40C to +85C -65C to +150C 25C/W AF002C4-39 Characteristic RF Input Power Control Voltage Operating Temperature Storage Temperature JC Value 8 W > 450 MHz, 0/-12 V +0.2, -12 V -40C to +85C -65C to +150C 25C/W Note: Exceeding these parameters may cause irreversible damage. 2 Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 12/02A GaAs IC Control FET Series DC-2.5 GHz AF002C1-39, AF002C4-39 T/R and Antenna Changeover Switch for Mobile Cellular Systems Mobile Antenna Phone Antenna Diplexer LNA PA Changeover Switch T/R Switch From Transmitter To Receiver Disconnect T/R Switch System Block Diagram T/R Switch Schematic Antenna LT (nH) D TX GaAs FET AF002C Series G G VCTL GaAs FET AF002C Series S D 10 k C (pF) S /4 RX Changeover Switch Schematic Antenna CT D S G VCTL To T/R Switch Truth Table for T/R Switch VCTL (V) 0 -5 TX to Antenna Low Loss High Isolation RX to Antenna High Isolation Low Loss Truth Table for Changeover Switch VCTL (V) -5 0 See next page for positive voltage operation. Antenna Connected Isolated See next page for positive voltage operation. Component Values for T/R Switch Circuit Part Number AF002C1-39 AF002C4-39 AF002C1-39 AF002C4-39 LT (nH) 165 85 44 22 CT (pF) 18.8 18.8 4.7 4.7 Freq. (GHz) 0.45 0.45 0.90 0.90 Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 12/02A 3 GaAs IC Control FET Series DC-2.5 GHz AF002C1-39, AF002C4-39 Pin Out DRAIN (D) 2 SOURCE (S) 1 Positive Voltage Operation VS RF RF 10 k CT D 2 1 S 3 GATE (G) 3 Truth Table Negative Voltage Operation S Shunt GND Series RF RF 0 -5 Insertion Loss Isolation RF -5 0 Insertion Loss Isolation RF 10 k G (0, VHigh) D G RF Path Shunt Configuration VS LT CBL RF CBL D 2 1 S Positive Voltage Operation S Shunt GND Series RF RF 0 VHigh Isolation Insertion Loss RF 0 VHigh Insertion Loss Isolation G (0, VHigh) CBL - Chose value for lowest impedance at desired operating frequency. D G RF Path 3 Series Configuration VHigh = +5 to +9 V (VS = VHigh 0.2 V). 4 Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 12/02A |
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