gaas spdt switch dc - 3.0 ghz rev. v6 SW-438 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? china tel: +86.21.2407.1588 visit www.macomtech.com for addi tional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 1 advanced: data sheets contain information regarding a product m/a-com technology solutions is considering for development. performance is based on target specifications, simulated results, and/or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product m/a-com technology solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commitment to produce in volume is not guaranteed. features ? low insertion loss, 0.7 db @ 2.4 ghz 1 ? high isolation, 25 db @ 2.4 ghz 1 ? low power consumption, < 10 a @ +3 v ? low cost plastic sot-363 package 1. for best results at 2.4 ghz, use 8 pf 0402 profile smt capacitors on rf ports and 100 pf bypassing on pins 4 and 6. description the SW-438 is a gaas mmic spdt switch in a low cost sot-363 surface mount plastic package. typical applications include transmit/receive switching for bluetooth and wlan equipment. the SW-438 can also be used in applications up to 500 mw in systems such as cellular, pcs, dcs1800, gsm, cdma and other analog and digital wireless communications systems. m/a-com fabricates the SW-438 using a 0.5 micron gate length gaas p-hemt process. the process features full passivation for increased performance and reliability. external component requirements please note the values of the external capacitors. the capacitors at each of the rf ports are used as for achieving optimum insertion loss. they also provide dc blocking for positive control. the 8 pf (0402) capacitor is recommended for 2 - 3 ghz operation. if this value is changed or the capacitor placed too far from the switch, the performance will be affected. we also recommend 100 pf bypass capacitors on pins 4 and 6. for broadband applications with positive control voltages, use dc blocking capacitors with value of 39 pf or more. functional schematic rf1 gnd rf2 v1 rfc v2 pin 1 c 39pf c 39pf c 39pf c=100pf c=100pf broad band applications rf1 gnd rf2 v1 rfc v2 pin 1 c=8pf c=8pf c=8pf c=100pf c=100pf 2.4 ghz application pin configuration pin no. function description 1 rf1 rf input/output 2 gnd rf ground 3 rf2 rf input/output 4 v2 control 2 input 5 rfc rf common port 6 v1 control 1 input ordering information 2 part number package SW-438tr-3000 SW-438 on 13 inch, 3000 piece reel SW-438smb SW-438 sample test board 2. reference application note m513 for reel size information. parameter absolute maximum input (0.5-3.0 ghz) 3 v control 5 v control +30 dbm +33 dbm operating voltage +8.5 volts operating temperature -40c to +85c storage temperature -65c to +150c absolute maximum ratings 3 3. exceeding any one or combination of these limits may cause permanent damage to this device .
gaas spdt switch dc - 3.0 ghz rev. v6 SW-438 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? china tel: +86.21.2407.1588 visit www.macomtech.com for addi tional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 2 advanced: data sheets contain information regarding a product m/a-com technology solutions is considering for development. performance is based on target specifications, simulated results, and/or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product m/a-com technology solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commitment to produce in volume is not guaranteed. electrical specifications: t a = 25c, 3v control parameter test conditions units min typ max insertion loss dc-3.0 ghz db 0.7 0.8 isolation dc-1.0 ghz 1.0-2.0 ghz 2.0-3.0 ghz db db db 29 23 21 31 25 23 return loss dc-1.5 ghz 1.5-3.0 ghz db db 18 16 22 20 p1db (2.3 v supply) 500 mhz-2.0 ghz dbm 23 26 p1db (3v supply) 500 mhz-2.0 ghz dbm 28 31 ip2 2-tone 900 mhz, 5 mhz spacing (2.3v) dbm 81 ip3 2-tone 900 mhz, 5 mhz spacing (2.3v) dbm 55 2 nd harmonic 2.4 ghz pin = 20 dbm, vc = 2.3v dbc 70 3 rd harmonic 2.4 ghz pin = 20 dbm, vc = 2.3v dbc 60 ton, toff 50% ctl to 10/90% rf ns 20 trise, tfall 10% to 90% rf ns 10 gate leakage |vctl| = 5v a 5 10 sc-70 (sot-363) plastic package mode (control) v1 v2 rfc- rf1 rfc- rf2 positive 4 0 + 0.2v +2.3 to +5v +2.3 to +5v 0 + 0.2v on off off on negative 5 0 + 0.2v -2.3 to -5v -2.3 to -5v 0 + 0.2v off on on off truth table 4. for positive voltage control, external dc blocking capacitors are required on all rf ports. 5. if negative control is used, dc blocking capacitors are not required on rf ports. this switch is not intended to pass or switch a dc voltage.
gaas spdt switch dc - 3.0 ghz rev. v6 SW-438 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? china tel: +86.21.2407.1588 visit www.macomtech.com for addi tional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 3 advanced: data sheets contain information regarding a product m/a-com technology solutions is considering for development. performance is based on target specifications, simulated results, and/or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product m/a-com technology solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commitment to produce in volume is not guaranteed. insertion loss vs. frequency over temperature isolation vs. frequency over temperature insertion loss vs. frequency over temperature typical performance curves bluetooth applications (8 pf dc blocking capacitors, +2.3v control) broadband applications (no dc blocking capacitors, -2.3 v control) isolation vs. frequency over temperature 0.0 0.2 0.4 0.6 0.8 1.0 2.0 2.2 2.4 2.6 2.8 3.0 +25c -40c +85c frequency (ghz) 20 22 24 26 28 30 2.0 2.2 2.4 2.6 2.8 3.0 +25c -40c +85c frequency (ghz) 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 +25c -40c +85c frequency (ghz) 20 30 40 50 60 0.0 0.5 1.0 1.5 2.0 2.5 3.0 +25c -40c +85c frequency (ghz)
gaas spdt switch dc - 3.0 ghz rev. v6 SW-438 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.43537383 ? china tel: +86.21.2407.1588 visit www.macomtech.com for addi tional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. 4 advanced: data sheets contain information regarding a product m/a-com technology solutions is considering for development. performance is based on target specifications, simulated results, and/or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product m/a-com technology solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commitment to produce in volume is not guaranteed. typical performance curves bluetooth applications (8 pf dc blocking capacitors, +2.3v control) broadband applications (no dc blocking capacitors, -2.3 v control) return loss vs. frequency over temperature 10 15 20 25 30 35 2.0 2.2 2.4 2.6 2.8 3.0 +25c -40c +85c frequency (ghz) return loss vs. frequency over temperature 10 15 20 25 30 35 0.0 0.5 1.0 1.5 2.0 2.5 3.0 +25c -40c +85c frequency (ghz)
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