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| GaAs SPDT Switch 0.05 - 3.0 GHz SW-485 Features * * * * Low Insertion Loss 0.3 dB Typ. @ 2.4 GHz Moderate Isolation 21 dB @ 2.4 GHz Low Power Consumption <5 A @ +2.3V Low Cost Plastic SOT-363 Package Functional Schematic C=39pF V1 RFC V2 Description M/A-COM's SW -485 is a GaAs PHEMT MMIC SPDT switch in a low cost SC-70 (SOT-363) surface mount plastic package. The SW-485 is ideally suited for applications where very small size and low cost are required. Typical applications are dual band systems where switching b etween small signal components is required such as filter banks, single-band LNAs, converters, etc. This part can be used for low power, low loss requirements in the all systems operating up to 3 GHz, including PCS, GSM, DCS, Blue Tooth, and other Rx chain applications. The SW -485 is fabricated using a 0.5 micron gate length GaAs PHEMT process. The process features full passiv ation for performance and reliability. RF1 GND RF2 PIN 1 C=39pF C=39pF Pin Configuration Pin No. 1 2 3 4 5 6 Function RF1 GND RF2 V2 RFC V1 Description RF Port 1 Ground RF Port 2 Control 2 RF Input Control 1 Handling Procedures The following precautions should be observed to avoid damage: Static Sensitivity Gallium Arsenide Integrated Circuits are ESD sensitive and can be damaged by static electricity. Proper ESD techniques should be used when handling these devices. Absolute Maximum Ratings 1 Parameter Max Input Power (0.5 - 3.0 GHz) 3 V Control 5 V Control Operating Voltage Operating Temperature Storage Temperature +32 dBm +34 dBm +8.5 volts -40 C to +85 C -65 C to +150 C Absolute Maximum Truth Table Mode (Control) Positive 1 2 Control V1 Control RFC- RF1 RFC-RF2 V2 On Off Off On 0 0.2V +2.3 to +5V +2.3 to +5V 0 0.2V 2. External DC blocking capacitors are required on all RF ports. 1. Exceeding any one or combination of these limits may cause permanent damage. GaAs SPDT Switch 0.05--3.0 GHz Electrical Specifications: TA = 25C, Z0 = 50 Parameter Insertion Loss Isolation VSWR IP2 IP3 P1dB Trise, Tfall Ton, Toff Transients Test Conditions 0.05-1.0 GHz 0.05-3.0 GHz 0.05-1.0 GHz 0.05-3.0 GHz 0.05-3.0 GHz Two Tone +5 dBm, 5 MHz Spacing, >50 MHz Two Tone +5 dBm, 5 MHz Spacing, >50 MHz Vc = 0.2V/2.5V Vc = 0.2V/3.0V 10% to 90% RF and 90% to 10% RF 3 Units dB dB dB dB dB dBm dBm dBm dBm nS nS mV 20 20 Min SW-485 Typ 0.25 0.35 23 21 1.1:1 90 46 21 25 35 40 10 Max 0.4 0.55 1.2:1 3. Insertion Loss can be optimized by varying the DC Blocking Capacitor value, i.e. 1000 pF for 100 MHz--1GHz, 39 pF for 0.5 GHz--3 GHz. SC-70 (SOT-363) Plastic Package D ee A 4 Dim Measurement (mm) Nom. 0.90 2.00 basic 0.65 basic 2.10 basic 1.25 basic 0.42 ref. PIN 6 A A1 A2 b Min. 0 0.70 0.15 0.08 - Max. 1.10 0.10 1.00 0.30 0.25 - E1 PIN 1 E L c D e E A A2 b A1 c E1 L Ordering Information Part Number SW-485 4. All dimensions are JEDEC MO-203-AB Issue A and are shown as in/mm. SW-485TR-3000 SW-485SMB Package SC-70 (SOT-363) Plastic Package Forward Tape and Reel, 3000 pcs Sample Board Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 2 GaAs SPDT Switch 0.05--3.0 GHz Typical Performance Curves Insertion Loss vs. Frequency, Over Temperature, 39 pF 0.4 +85C SW-485 Insertion Loss vs. Frequency, Over Temperature, 1000 pF 0.5 0.45 Insertion Loss (dB) 0.35 Insertion Loss (dB) 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 -40C +25C +85C +25C 0.3 0.25 -40C 0.2 0.15 0.1 0.5 1 1.5 2 2.5 3 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Frequency (GHz) Frequency (GHz) Isolation vs. Frequency, Over Temperature, 39 pF 29 27 +25C Isolation vs. Frequency, Over Temperature, 1000 pF 50 45 +25C Isolation (dB) 25 23 21 19 17 15 0.5 +85C -40C Isolation (dB) 40 -40C 35 30 +85C 25 20 1 1.5 2 2.5 3 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Frequency (GHz) Frequency (GHz) VSWR vs. Frequency, Over Temperature, 39 pF 1.5 VSWR vs. Frequency, Over Temperature, 1000 pF 1.3 1.25 1.2 1.4 VSWR +85C VSWR 1.3 1.15 -40C 1.2 +25C +25C 1.1 1.05 1.1 -40C 1 0.5 +85C 1 1 1.5 2 2.5 3 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Frequency (GHz) Frequency (GHz) Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 3 |
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