for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, 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 3 - 1 filters - tunable - smt 3 HMC881LP5E v01.0110 functional diagram typical applications features general description filter - tunable, low pass smt 2.2 - 4.0 ghz the HMC881LP5E is ideal for: ? test & measurement equipment ? military radar & ew/ecm ? satcom & space ? industrial & medical equipment fast tuning response; 150 ns excellent wideband rejection; 40 db single positive frequency control: 0 to +14v low insertion loss & user selectable cutoff frequency single chip replacement for mechanically tuned designs 32 lead 5x5 mm smt package electrical specifcations, t a = +25c parameter min. typ. max. units passband 0 4 ghz ?cutoff [1] tuning range 2.2 4 ghz stopband frequency (rejection >20 db) 1.25 x ?cutoff ghz re-entry frequency (rejection <30 db) 30 ghz insertion loss 3.8 db return loss 10 db maximum input power for linear operation 10 dbm frequency control voltage (vfctl) 0 14 v frequency control port source/sink current (i fctl ) 1 ma residual phase noise [2] (1 mhz offset) -165 dbc/hz ?cutoff drift rate (fixed vfctl) -0.8 mhz/c tuning characteristics [3] tfullband (0% vfctl to 90% rf) 150 ns [1] ?cutoff defned as the point at which the insertion loss is 3 db below the minimum passband insertion loss. [2] optimum residual phase noise performance requires the use of a low noise driver circuit. [3]tuning speed is dependent on driver circuit. data measured with a high speed op-amp driver and includes driver slew rate delay. the HMC881LP5E is a mmic low pass flter which features a user selectable cutoff frequency. the cutoff frequency can be varied from 2.2 to 4.0 ghz by applying a single analog tuning voltage between 0 and 14v. this low pass flter provides a low 3.8 db insertion loss, 10 db return loss and 1.25 x ?cutoff stopband attenuation of >20 db. this tunable flter can be used as a much smaller alternative to physi - cally large switched flter banks and cavity tuned fl - ters. the HMC881LP5E has excellent microphonics due to the monolithic design, and provides a dynami - cally adjustable solution in advanced communications applications. the low pass tunable flter is packaged in a rohs compliant 5x5mm qfn leadless package.
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, 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 3 - 2 filters - tunable - smt 3 HMC881LP5E v01.0110 filter - tunable, low pass smt 2.2 - 4.0 ghz return loss vs. temperature, vfctl @ 7v [1] return loss vs. control voltage [1] insertion loss vs. temperature, vfctl @ 7v [1] broadband insertion loss vs. control voltage broadband return loss vs. control voltage insertion loss vs. control voltage [1] -70 -60 -50 -40 -30 -20 -10 0 0 5 10 15 20 25 30 insertion loss (db) frequency (ghz) 0v 7v 14v -40 -30 -20 -10 0 0 5 10 15 20 25 30 s11 s22 return loss (db) frequency (ghz) 0v 7v 14v -12 -9 -6 -3 0 0 1 2 3 4 5 insertion loss (db) frequency (ghz) 0v 7v 14v -40 -30 -20 -10 0 0 1 2 3 4 5 s11 s22 return loss (db) frequency (ghz) 0v 7v 14v -12 -9 -6 -3 0 0 1 2 3 4 5 +25c +85c -40c insertion loss (db) frequency (ghz) -40 -30 -20 -10 0 0 1 2 3 4 5 +25c +85c -40c return loss (db) frequency (ghz) s11 s22 [1] low frequency performance limited by external dc blocking capacitors at rf input and output.
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, 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 3 - 3 filters - tunable - smt 3 HMC881LP5E v01.0110 filter - tunable, low pass smt 2.2 - 4.0 ghz rejection ratio vs. temperature [1] tuning sensitivity vs. temperature group delay maximum return loss in a 2 db bandwidth vs. temperature cutoff frequency vs. temperature average insertion loss vs. temperature in a 2 db bandwidth 0 1 2 3 4 5 0 2 4 6 8 10 12 14 +25c +85c -40c frequency(ghz) vftcl(v) -5 -4 -3 -2 -1 0 0 2 4 6 8 10 12 14 +25c +85c -40c insertion loss(db) vfctl(v) 1 1.1 1.2 1.3 1.4 1.5 0 2 4 6 8 10 12 14 +25c +85c -40c f20db to f3db ratio vfctl (v) 0 50 100 150 200 250 300 0 2 4 6 8 10 12 14 +25c +85c -40c tuning sensitivity (mhz/v) vfctl(v) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 frequency (ghz) group delay (nsec) 0v 7v 14v -20 -16 -12 -8 -4 0 0 2 4 6 8 10 12 14 +25c +85c -40c return loss (db) vfctl(v) [1] rejection ratio is defned as the ratio of the frequency at which the relative insertion loss is 20 db, to ?cutoff
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, 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 3 - 4 filters - tunable - smt 3 HMC881LP5E v01.0110 filter - tunable, low pass smt 2.2 - 4.0 ghz outline drawing notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters] 3. lead spacing tolerance is non-cumulative. 4. pin burr length shall be 0.15mm maximum. pin 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. part number package body material lead finish msl rating package marking [1] HMC881LP5E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] h881 xxxx [1] 4-digit lot number xxxx [2] max peak refow temperature of 260 c package information absolute maximum ratings reliability information frequency control voltage (vfctl) -0.5 to +15v rf power input 26.5 dbm storage temperature -65 to +150 c esd rating (hbm) class 1b junction temperature to maintain 1 million hour mttf 150 c nominal junction temperature (t= 85 c and pin = 10 dbm) 90 c operating temperature -40 to +85 c electrostatic sensitive device observe handling precautions
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, 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 3 - 5 filters - tunable - smt 3 HMC881LP5E v01.0110 filter - tunable, low pass smt 2.2 - 4.0 ghz pin descriptions application circuit pin number function description interface schematic 1 - 4, 7 - 13, 15 - 18, 21 - 32 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, 20 gnd these pins and exposed paddle must be connected to rf/dc ground. 6 rfin this pin is dc coupled and matched to 50 ohms. external voltage must not be applied to this pin. 14 vfctl cutoff frequency control voltage. 19 rfout this pin is dc coupled and matched to 50 ohms. external voltage must not be applied to this pin.
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, 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 3 - 6 filters - tunable - smt 3 HMC881LP5E v01.0110 filter - tunable, low pass smt 2.2 - 4.0 ghz evaluation pcb the circuit board used in the application should use rf circuit design techniques. signal lines sho- uld have 50 ohms 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 materials for evaluation pcb 128531 [1] item description j1 - j3 sma - sri c1, c2 100 pf capacitor, 0402 pkg. u1 HMC881LP5E filter pcb [2] 127338 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: arlon 25fr or rogers 25fr
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