attenuators - smt 5 5 - 176 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 hmc541lp3 / 541lp3e 10 db gaas mmic 1-bit digital positive control attenuator, dc - 5 ghz v01.1005 functional diagram electrical speci cations, t a = +25 c, with vdd = +5v & vctl = 0/+5v (unless otherwise noted) the hmc541lp3 / hmc541lp3e is ideal for both rf and if applications: ? cellular infrastructure ? ism, mmds, wlan, wimax, wibro ? microwave radio & vsat ? test equipment and sensors 0.2 db typical step error low insertion loss: 1 db high ip3: +50 dbm single control line ttl/cmos compatible control single +5v supply 3x3 mm smt package the hmc541lp3 & hmc541lp3e are broadband 1-bit gaas ic digital attenuators in low cost lead- less surface mount packages. this single posi- tive control line digital attenuator utilizes off chip ac ground capacitors for near dc operation, making it suitable for a wide variety of rf and if applications. covering dc to 5 ghz, the insertion loss is less than 1 db typical. attenuation accuracy is excellent at 0.2 db typical step error. the attenu- ator also features a high iip3 of +50 dbm. one ttl/ cmos control input is used to select the attenuation state. a single vdd bias of +5v is required. parameter frequency (ghz) min. typ. max. units insertion loss dc - 2.0 ghz 2.0 - 3.5 ghz 3.5 - 5.0 ghz 0.5 1.0 2.0 0.8 1.3 2.3 db db db attenuation range dc - 5 ghz 10 db return loss (rf1 & rf2, all atten. states) dc - 2.5 ghz 2.5 - 5.0 ghz 25 15 db db attenuation accuracy: (referenced to insertion loss) dc - 5 ghz 0.4 max. db input power for 0.1 db compression 0.1 - 5.0 ghz 27 dbm input third order intercept point (two-tone input power= 0 dbm each tone) 0.1 - 5.0 ghz 50 dbm switching characteristics trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) dc - 5 ghz 20 23 ns ns typical applications features general description
attenuators - smt 5 5 - 177 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 return loss rf1, rf2 insertion loss normalized attenuation bit error vs. frequency relative phase vs. frequency hmc541lp3 / 541lp3e v01.1005 10 db gaas mmic 1-bit digital positive control attenuator, dc - 5 ghz -4 -3 -2 -1 0 0123456 +25 c +85 c -40 c insertion loss (db) frequency (ghz) -12 -10 -8 -6 -4 -2 0 0123456 normalized attenuation (db) frequency (ghz) -40 -30 -20 -10 0 10 20 30 40 0123456 relative phase (deg) frequency (ghz) -1 -0.6 -0.2 0.2 0.6 1 0123456 bit error (db) frequency (ghz) -40 -30 -20 -10 0 0123456 return loss (db) frequency (ghz) 10 db i.l.db input ip3 vs. frequency 0 10 20 30 40 50 60 0123456 i.l. db 10 db ip3 (dbm) frequency (ghz)
attenuators - smt 5 5 - 178 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 voltage bias voltage & current vdd = +5.0 vdc 10% vdd (vdc) idd (typ.) (ma) +4.5 1.3 +5.0 1.5 +5.5 1.7 state bias condition low 0 to +0.8v @ -5 ua typ. high +2.0 to + 5.0 vdc @ 40 ua typ. note: vdd = +5v control voltage input attenuation state rf1 - rf2 v1 10 db high reference i.l. low 10 db hmc541lp3 / 541lp3e v01.1005 10 db gaas mmic 1-bit digital positive control attenuator, dc - 5 ghz
attenuators - smt 5 5 - 179 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 absolute maximum ratings outline drawing rf input power (dc - 5 ghz) +27 dbm (t = +85 c) control voltage range (v1) -1v to vdd +1v bias voltage (vdd) +7.0 vdc channel temperature 150 c continuous pdiss (t = 85 c) (derate 14.7 mw/c above 85 c) 0.96 w thermal resistance 68 c/w storage temperature -65 to +150 c operating temperature -40 to +85 c esd sensitivity (hbm) class 1b notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters] 3. lead spacing tolerance is non-cumulative 4. pad burr length shall be 0.15mm maximum. pad burr height shall be 0.05mm maximum. 5. package warp shall not exceed 0.05mm. 6. all ground leads and ground paddle must be soldered to pcb rf ground. 7. refer to hittite application note for suggested land pattern. electrostatic sensitive device observe handling precautions part number package body material lead finish msl rating package marking [3] hmc541lp3 low stress injection molded plastic sn/pb solder msl1 [1] 541 xxxx hmc541lp3e rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] 541 xxxx [1] max peak re ow temperature of 235 c [2] max peak re ow temperature of 260 c [3] 4-digit lot number xxxx package information hmc541lp3 / 541lp3e v01.1005 10 db gaas mmic 1-bit digital positive control attenuator, dc - 5 ghz
attenuators - smt 5 5 - 180 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 pin descriptions pin number function description interface schematic 1vdd supply voltage. 2, 11 rf1, rf2 this pin is dc coupled and matched to 50 ohm. blocking capacitors are required. select value based on lowest frequency of operation. 3, 4, 6, 7, 9, 10, 12, 13, 15, 16 n/c these pins should be connected to pcb rf ground to maximize performance. 5, 8 acg1, acg2 external capacitor to ground is required. select value for lowest frequency of operation. place capacitor as close to pins as possible. 14 v1 see truth table and control voltage table. gnd package bottom has an exposed metal paddle that must be connected to rf ground. application circuit hmc541lp3 / 541lp3e v01.1005 10 db gaas mmic 1-bit digital positive control attenuator, dc - 5 ghz recommended component values c1 - c3 1,000 pf 10% c4, c5 330 pf 10%
attenuators - smt 5 5 - 181 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 nal application should use rf circuit design techniques. signal lines should have 50 ohm impedance while the package ground leads and exposed paddle should be con- nected directly to the ground plane similar to that shown. a sufficient number of via holes should be used to connect the top and bottom ground planes. the evaluation circuit board shown is available from hittite upon request. list of material for evaluation pcb 111317 [1] item description j1 - j2 pcb mount sma connector j3 - j5 dc connector c1 - c3 1000 pf capacitor, 0402 pkg. c4 - c5 330 pf capacitor, 0402 pkg. u1 hmc541lp3 / hmc541lp3e digital attenuator pcb [2] 111290 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 hmc541lp3 / 541lp3e v01.1005 10 db gaas mmic 1-bit digital positive control attenuator, dc - 5 ghz
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