switches - smt 10 10 - 166 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com hmc284ms8g / 284ms8ge spdt non-reflective switch, dc - 3.5 ghz v06.0607 general description features functional diagram high isolation: >45 db positive control: 0/+5v non-refl ective design ultra small pakcage: msop8g indluded in the hmc-dk005 designers kit electrical specifi cations, t a = +25 c, vctl = 0/+5 vdc, 50 ohm system typical applications the hmc284ms8g / HMC284MS8GE is ideal for: ? cellular/pcs base stations ? 2.4 ghz ism ? 3.5 ghz wireless local loop the hmc284ms8g & HMC284MS8GE are low-cost spdt switches in 8-lead grounded base msop pack- ages. the design has been optimized to provide high isolation with minimal insertion loss for medium and low power applications. on-chip circuitry allows posi- tive voltage control operation at very low dc currents with control inputs compatible with cmos and most ttl logic families. in the off state, rf1 and rf2 are non-refl ective. see refl ective high isolation spdt version, hmc194ms8. parameter frequency min. typ. max. units insertion loss dc - 2.0 ghz dc - 3.0 ghz dc - 3.5 ghz 0.5 0.6 0.7 0.8 0.9 1.1 db db db isolation rf1 & rf2 rf1 / rf2 rf1 / rf2 rf1 & rf2 dc - 2.0 ghz dc - 2.5 ghz dc - 3.0 ghz dc - 3.5 ghz 41 38/41 34/36 30 45 41/45 37/39 33 db db db db return loss (on state) dc - 2.0 ghz dc - 2.5 ghz dc - 3.5 ghz 21 13 10 25 17 12 db db db return loss (off state) 0.5 - 3.5 ghz 10 13 db input power for 1 db compression 0.5 - 1.0 ghz 0.5 - 3.5 ghz 20 18 25 24 dbm dbm input third order intercept (two-tone input powew = 0 dbm each tone) 0.5 - 3.5 ghz 43 48 dbm switching speed dc - 3.5 ghz trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) 40 60 ns ns
switches - smt 10 10 - 167 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com hmc284ms8g / 284ms8ge return loss v06.0607 insertion loss isolation spdt non-reflective switch, dc - 3.5 ghz -3 -2.5 -2 -1.5 -1 -0.5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 +25 c -40 c +85 c insertion loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 s11 (on) s22 (on) s22 (off) return loss (db) frequency (ghz) -60 -50 -40 -30 -20 -10 0 0 0.5 1 1.5 2 2.5 3 3.5 4 rf 1 rf 2 isolation (db) frequency (ghz)
switches - smt 10 10 - 168 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com truth table *control input tolerances are +/-0.2 vdc dc blocks are required at ports rfc, rf1, rf2. control input* control current signal path state a (vdc) b (vdc) ia (ua) ib (ua) rfc to rf1 rfc to rf2 0 +5 -25 25 on off +5 0 25 -25 off on compression vs frequency caution: do not operate continuously at rf power input greater than 1 db compression. (vctl = 0/+5 vdc). carrier at 900 mhz carrier at 1900 mhz ctl input input power for 0.1 db compression input power for 1.0 db compression input power for 0.1 db compression input power for 1.0 db compression (vdc) (dbm) (dbm) (dbm) (dbm) +5 23 25 22 24 distortion vs frequency control input third order intercept (dbm) 0 dbm each tone (vdc) 900 mhz 1900 mhz +5 48 50 hmc284ms8g / 284ms8ge v06.0607 spdt non-reflective switch, dc - 3.5 ghz
switches - smt 10 10 - 169 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com outline drawing absolute maximum ratings rf input power (vctl = 0/+5v) +26 dbm control voltage range -0.2 to +7.5 vdc hot switch power level (vctl = 0/+5v) +18 dbm channel temperature 150 c thermal resistance (insertion loss path) 140 c/ w thermal resistance (terminated path) 190 c/w storage temperature -65 to +150 c operating temperature -40 to +85 c esd sensitivity (hbm) class 1a electrostatic sensitive device observe handling precautions hmc284ms8g / 284ms8ge v06.0607 spdt non-reflective switch, dc - 3.5 ghz part number package body material lead finish msl rating package marking [3] hmc284ms8g low stress injection molded plastic sn/pb solder msl1 [1] h284 xxxx HMC284MS8GE rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] h284 xxxx [1] max peak refl ow temperature of 235 c [2] max peak refl ow temperature of 260 c [3] 4-digit lot number xxxx package information notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters]. 3. dimension does not include moldflash of 0.15mm per side. 4. dimension does not include moldflash of 0.25mm per side. 5. all ground leads and ground paddle must be soldered to pcb rf ground.
switches - smt 10 10 - 170 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com typical application circuit notes: 1. set a/b control to 0/+5v, vdd = +5v and use hct series logic to provide a ttl driver interface. 2. control inputs a/b can be driven directly with cmos logic (hc) with vdd = +5 volts applied to the cmos logic gates. 3. dc blocking capacitors are required for each rf port as shown. capacitor value determines lowest frequency of operation. 4. highest rf signal power capability is acheived wiht vdd = +7v and a/b set to 0/+7v. 5. back side paddle must be connected to rf ground. 6. a grounded coplanar waveguide pcb layout technique is recommended to achieve high isolation. the component side ground plane between rfc/grounded paddle and rf1/rf2 should be continuous, see below. there should be a continu- ous ground plane under component side layout. hmc284ms8g / 284ms8ge v06.0607 spdt non-reflective switch, dc - 3.5 ghz
switches - smt 10 10 - 171 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com evaluation pcb the circuit board used in the fi nal application should be generated with proper rf circuit design tech- niques. signal lines at the rf port should have 50 ohm impedance and the package ground leads and package bottom should be connected directly to the ground plane similar to that shown above. the eval- uation circuit board shown above is available from hittite microwave corporation upon request. list of materials for evaluation pcb 105143 [1] item description j1 - j3 pcb mount sma rf connector j4 - j6 dc pin c1 - c3 100 pf capacitor, 0402 pkg. r1, r2 100 ohm resistor, 0402 pkg. u1 hmc284ms8 / HMC284MS8GE spdt switch pcb [2] 107821 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 hmc284ms8g / 284ms8ge v06.0607 spdt non-reflective switch, dc - 3.5 ghz
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