SKY13268-344: gaas spdt switch 300 khz?3 ghz medium power preliminary data sheet features broadband: 300 khz - 3 ghz low insertion loss: 0.3 db @ 900 mhz p 1 db : +30 dbm typical @ 3 v low distortion: ip3 +43 dbm @ 3 v low current consumption: < 100 a @ 3 v ultraminiature sot-666 6 lead package applications transceiver transmit-receive switching in gsm, cdma, wcdma, wlan, bluetooth ? , zigbee ? , land mobile radio base stations or terminal equipment general purpose medium power switch in telecommunications applications description the SKY13268-344 is a monolithic spdt switch fabricated using skyworks solutions? proprietary gaas phemts as the switching elements. this wideband switch operates with rf signals from 300 khz to 3 ghz. the rf signal paths within the SKY13268-344 are fully bilateral. ports j 2 and j 3 , rf input/output terminals are reflective. switching is controlled via two control voltage inputs, which are compatible with cmos logic levels. depending upon the logic voltage level applied to the control voltage pin, the common rf pin, j 1 , is connected to one of two switched rf pins (j 2 or j 3 ) via a low insertion loss path, while the path between the rf common and the other rf pin is in its high isolation state. dc power consumption is very low, 100 a maximum with con- trol voltage of 3 v. the switch can operate over the temperature range of -40 c to 85 c. an evaluation board is available upon request. skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 200037 rev. b skyworks proprietary information products and product information are subject to change without notice. november 8, 2004 1 figure 1. function block diagram j 1 gnd c bl c bl c bl j 3 j 2 v 2 v 1 1 2 3 654 dc blocking capacitors (c bl ) must be supplied externally for positive voltage operation. c bl = 100 pf for operation >500 mhz.
skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com november 8, 2004 skyworks proprietary information products and product information are subject to change without notice. 200037 rev. b preliminary data sheet ? SKY13268-344 2 characteristic value control voltage range -0.2 v c 8 v rf input power 6 w for f > 500 mhz, v ctl = 0/7 v storage temperature range -65 c to +150 c operating temperature range -40 c to +85 c table 3. absolute maximum ratings parameter condition frequency min. typ. max. unit switching characteristics rise, fall 10/90% or 90/10% rf 36 ns on, off 50% ctl to 90/10% rf 58 ns video feedthru pulse rise time = 1 ns, 25 mv measurement bw = 500 mhz input power for 1 db compression v low = 0 v, v high = 3 v 0.5?3.0 ghz +30 dbm v low = 0 v, v high = 5 v 0.5?3.0 ghz +34 dbm intermodulation intercept point (ip3) for two-tone input power +5 dbm v low = 0 v, v high = 3 v 0.5?3.0 ghz +43 dbm v low = 0 v, v high = 5 v 0.5?3.0 ghz +50 dbm thermal resistance 25 c/w control voltages v low = 0 @ 20 a max. v high = +3 v @ 100 a max. to +5 v @ 200 a max. table 2. operating characteristics (v ctl = 0 v/3 v, t = 25 c, p input = 0 dbm, z o = 50 ? , unless otherwise noted) performance is guaranteed only under the conditions listed in the specifications table and is not guaranteed under the full range(s) described by the absolute maximum specifications. exceeding any of the absolute maximum/minimum specifications may result in permanent damage to the device and will void the warranty. caution: although this device is designed to be as robust as possible, electrostatic discharge (esd) can damage this device. this device must be protected at all times from esd. static charges may easily produce poten- tials of several kilovolts on the human body or equipment, which can discharge without detection. industry-standard esd precautions must be employed at all times. parameter frequency (2) min. typ. max. unit insertion loss 300 khz?1.0 ghz 0.3 0.4 db 1.0?2.0 ghz 0.4 0.5 db 2.0?3.0 ghz 0.4 0.6 db isolation 300 khz?1.0 ghz 20 25 db 1.0?2.0 ghz 20 25 db 2.0?3.0 ghz 20 23 db vswr 300 khz?1.0 ghz 1.3:1 1.4:1 1.0?2.0 ghz 1.3:1 1.4:1 2.0?3.0 ghz 1.3:1 1.4:1 table 1. electrical specifications (v ctl = 0 v/3 v, t = 25 c, p input = 0 dbm, z o = 50 ? , unless otherwise noted)
preliminary data sheet SKY13268-344 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 200037 rev. b skyworks proprietary information products and product information are subject to change without notice. november 8, 2004 3 typical performance data (0, +3 v) 0.5 1.0 1.5 2.0 2.5 3.0 j 1 ?j 2 j 1 ?j 3 frequency (ghz) insertion loss (db) 0 0 -0.2 -0.4 -0.6 -0.8 -1.0 0.5 1.0 1.5 2.0 2.5 3.0 j 1 ?j 2 j 1 ?j 3 frequency (ghz) vswr 0 1.5 1.4 1.3 1.2 1.1 1.0 0.5 1.0 1.5 2.0 2.5 3.0 j 1 ?j 2 j 1 ?j 3 frequency (ghz) isolation (db) 0 -10 -20 -25 -15 -30 -35 -40 -45 -50 figure 2. insertion loss vs. frequency figure 4. vswr vs. frequency all dimen s ion s are in mm. 0.13 min. 0.17 nom. 0.18 max. 1.50 min. 1. 66 nom. 1.70 max. 6 x 0.53 min. 0.57 nom. 0. 6 0 max. 0.10 min. 0.23 nom. 0.30 max. 1.10 min. 1.20 nom. 1.30 max. 0.11 min. 0.1 9 nom. 0.2 6 max. 0.17 min. 0.25 max. 0.05 min. 0.10 max. 0.50 b sc . 0.27 nom. 0.34 max. 0.20 min. 0.83 ref. 1.50 min. 1. 6 5 nom. 1.70 max. pin 1 4x 8 min. 10 nom. 12 max. c l c l c l c l figure 5. sot-666 package outline figure 3. isolation vs. frequency v 1 v 2 j 1 ?j 2 j 1 ?j 3 v high 0 isolation insertion loss 0v high insertion loss isolation 0 0 not allowed not allowed v high v high not allowed not allowed table 4. truth table 1 3 v v high 5 v.
preliminary data sheet SKY13268-344 skyworks solutions, inc. phone [781] 376-3000 fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com 200037 rev. b skyworks proprietary information products and product information are subject to change without notice. november 8, 2004 4 pin number pin name description 1j 2 rf input/output ? rf input or output port which is either connected via a low insertion loss path to rf common (j 1 ) or isolated from rf common, according to the logic levels applied to v 1 and v 2 2 gnd equipotential point ? equipotential point for control voltage and rf circuits. must be connected to pcb ground via lowest possible impedance 3j 3 rf input/output ? rf input or output port which is either connected via a low insertion loss path to rf common (j 1 ) or isolated from rf common, according to the logic levels applied to v 1 and v 2 4v 2 control voltage ? control voltage input #2 5j 1 rf common input/output ? rf input/output port that is connected via low insertion loss path to either rf1 or rf2, depending upon the voltage applied to control voltage pin 6v 1 control voltage ? control voltage input #1 table 5. pin descriptions figure 6. SKY13268-344 evaluation circuit c 1 100 pf c 2 100 pf c 3 100 pf j 1 j 2 j 3 u1 v 1 v 2 c 4 100 pf c 5 100 pf j 5 j 4 c alibration through line evaluation board the evaluation board for SKY13268-344 allows the part to be fully exercised. the insertion loss of the transmission lines between j 1 - u1 and u1 - j 2 /j 3 can be determined by measuring the performance of the calibration through line, which contains two dc block capacitors in identical positions to the of the dc blocks present in the main circuit. the state of the SKY13268-344 is controlled by applying the appropriate logic level voltages to ports v 1 and v 2 , per table 4. component description default c 1 ?c 5 dc blocking capacitor 100 pf, size 0402 u1 SKY13268-344 gaas spdt j 1 ,j 2 ,j 3 ,j 4 ,j 5 sma connectors table 6. evaluation board components
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