at tenu a tors - s m t 1 hmc941lp4 / 941lp4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz electrical specifcations, t a = +25 c, with vdd = +5v, vss = -5v, p0 - p4 = 0/ +5v t he hmc941lp4 / hmc941lp4 e is ideal for: ? fiber optics & broadband telecom ? microwave radio & vsat ? military radios, radar & ecm ? space applications ? sensors ? test & measurement equipment 0.5 db lsb steps to 15.5 db single positive control line per bit 0.5 db typical bit error high input ip3: +45 dbm 16mm 2 leadless smt plastic package t he hmc941lp4 & hmc941lp4e are broadband 5-bit gaas ic digital attenuators in low cost leadless sur - face mount packages. covering 0.1 to 33.0 ghz, the insertion loss is less than 4 db typical. the attenuator bit values are 0.5 (lsb), 1, 2, 4, 8, for a total attenu - ation of 15.5 db. attenuation accuracy is excellent at 0.3 db typical step error with an iip3 of +45 dbm. five control voltage inputs, toggled between +5v and 0v, are used to select each attenuation state. parameter frequency (ghz) min. typ. max. units insertion loss 0.1 - 18.0 ghz 18.0 - 26.5 ghz 26.5 - 33.0 ghz 3.0 4.0 5.0 4.5 6.0 6.5 db db attenuation range 0.1 - 33.0 ghz 15.5 db return loss (rf1 & rf2, all atten. states) 0.1 - 33.0 ghz 12 db attenuation accuracy: (referenced to insertion loss) 0.5 - 7.5 db states 8 - 15.5 db states 0.1 - 33.0 ghz 0.1 - 33.0 ghz (0.3 + 4%) of atten. setting max (0.3 + 8%) of atten. setting max db db input power for 0.1 db compression 0.1 - 0.5 ghz 0.5 - 33.0 ghz 22 27 dbm dbm input third order intercept point (two-tone input power= 0 dbm each tone) 0.1 - 0.5 ghz 0.5 - 33.0 ghz 42 45 dbm dbm switching characteristics trise, tfall (10/90% rf) ton/toff (50% ctl to 10/90% rf) 0.1 - 33.0 ghz 60 90 ns ns idd 0.1 - 33.0 ghz 2.5 4.5 6.5 ma iss 0.1 - 33.0 ghz -7.0 -5.0 -3.0 ma general description features functional diagram typical applications for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
at tenu a tors - s m t 2 hmc941lp4 / 941lp4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz input return loss (only major states are shown) output return loss (only major states are shown) insertion loss vs. temperature normalized attenuation (only major states are shown) bit error vs. frequency (only major states are shown) bit error vs. attenuation state -14 -12 -10 -8 -6 -4 -2 0 0 5 10 15 20 25 30 35 40 +25 c +85 c -40 c insertion loss (db) frequency (ghz) -40 -30 -20 -10 0 0 5 10 15 20 25 30 35 40 return loss (db) frequency (ghz) -40 -30 -20 -10 0 0 5 10 15 20 25 30 35 40 return loss (db) frequency (ghz) -20 -15 -10 -5 0 0 5 10 15 20 25 30 35 40 normalized attenuation (db) frequency (ghz) -0.8 -0.4 0 0.4 0.8 1.2 0 4 8 12 16 5 ghz 10 ghz 18 ghz 26.5 ghz 33 ghz bit error (db) attenuation state (db) -1.5 -1 -0.5 0 0.5 1 1.5 0 5 10 15 20 25 30 35 40 bit error (db) frequency (ghz) 15.5 db 8 db for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
at tenu a tors - s m t 3 hmc941lp4 / 941lp4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz 20 30 40 50 60 0.01 0.1 1 10 100 ip3 (dbm) frequency (ghz) relative phase vs. frequency (only major states are shown) step attenuation vs. attenuation state 0.1 - 18 ghz input ip3 vs. temperature (minimum attenuation state) input ip3 over major attenuation states input power for 0.1 db compression -10 0 10 20 30 40 50 60 0 5 10 15 20 25 30 35 40 relative phase (deg) frequency (ghz) 15.5 db -0.2 0 0.2 0.4 0.6 0.8 1 1.2 0 4 8 12 16 5 ghz 10 ghz 18 ghz step attenuation (db) attenuation state (db) -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0 4 8 12 16 26.5 ghz 33 ghz step attenuation (db) attenuation state (db) 20 30 40 50 60 0.01 0.1 1 10 100 +25 c +85 c -40 c ip3 (dbm) frequency (ghz) 6 10 14 18 22 26 30 0.01 0.1 1 10 100 +25 c +85 c -40 c p0.1db (dbm) frequency (ghz) step attenuation vs. attenuation state 18 - 33 ghz for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
at tenu a tors - s m t 4 hmc941lp4 / 941lp4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz control voltage bias voltages & currents absolute maximum ratings state bias condition low 0 to 0.8v @ 1 a high 2 to 5v @ 1 a vdd +5v @ 4.5 ma vss -5v @ 5 ma rf input power (0.1 to 33.0 ghz) +27 dbm control voltage (p0 to p4) vdd + 0.5v vdd +7 vdc vss -7 vdc channel temperature 150 c continuous pdiss (t = 85 o c) (derate 6.8 mw/ o c above 85 o c) 0.445 w thermal resistance 146 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 outline drawing 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 la n d pa t tern . part number package body material lead finish msl rating package marking [3] hmc941lp4 low stress injection molded plastic sn/pb solder m s l1 [1] h941 xxxx hmc941lp4 e rohs-compliant low stress injection molded plastic 100% matte sn m s l1 [2] h941 xxxx [1] max peak refow temperature of 235 c [2] max peak refow temperature of 260 c [3] 4-digit lot number xxxx package information for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
at tenu a tors - s m t 5 hmc941lp4 / 941lp4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz pad number function description interface schematic 1 vss negative bias -5v 2-4, 6-13, 15-17, 19 n /c the pins are not connected internally; however, all data shown herein was measured with these pins connected to rf/dc ground externally. 5, 14 rf1, rf2 these pins are dc coupled and matched to 50 ohm. blocking capacitors are required if rf line potential is not equal to 0v. 18 vdd positive bias +5v 20 - 24 p0 - p4 see truth table and control voltage table. g nd package bottom must be connected to rf/dc ground. pin descriptions truth table control voltage input attenuation state rf1 - rf2 p4 8 db p3 4 db p2 2 db p1 1 db p0 0.5 db high high high high high reference i.l. high high high high low 0.5 db high high high low high 1 db high high low high high 2 db high low high high high 4 db low high high high high 8 db low low low low low 15.5 db any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
at tenu a tors - s m t 6 hmc941lp4 / 941lp4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz application circuit for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
at tenu a tors - s m t 7 hmc941lp4 / 941lp4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz evaluation pcb list of materials for evaluation pcb 130450 [1] item description j1, j2, j4, j5 2.9 mm pc mount rf connector j3 dc connector c1, c2 1000 pf capacitor, 0402 pkg. u 1 hmc941lp4 digital attenuator pcb [2] 131909 evaluation board [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 the circuit board used in the application should use rf circuit design techniques. signal lines should have 50 ohm impedance while the package ground leads should be connected 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. for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
at tenu a tors - s m t 8 hmc941lp4 / 941lp4e v00.0910 0.5 db lsb gaas mmic 5-bit digital attenuator, 0.1 - 33 ghz notes: for price, delivery and to place orders: hittite microwave corporation, 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com
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