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0.01 ghz to 10 ghz, mmic, gaas, phemt rf gain block data sheet hmc788a rev. b document feedback information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any in fringements of patents or other rights of third parties that may result from its use. specifica tions subject to change without notice. no license is granted by implication or otherwise under any patent or patent right s of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062 - 9106, u.s.a. tel: 781.329.4700 ? 2017 analog devices, inc. all rights reserved. technical support www.analog.com features gain : 1 4 db typical operational frequency range : 0.01 g hz to 10 ghz input/output internally matched t o 50 high i nput linearity 1 db compression (p1db): 20 dbm typical output t hird - order intercept ( o ip3): 33 dbm typical supply voltage : 5 v typica l 2 mm 2 mm, 6 - lead lead frame chip scale package applications cellular , 3g , lt e , wimax , and 4g l o d river a pplications microwave r ad io test and measurement e quipment ultra wideband (uwb) c ommunications functional block dia gram 2 1 3 6 5 4 gnd rf in nic nic rf out package base hmc788a nic 16204-001 figure 1. general description the hmc788a is a 0.01 ghz to 10 ghz , gain block , monolithic microwave integrated circuit (mmic) amplifier u sing gallium arsenide (gaas) , pseudomorphic h igh e lectron m obility t ransistor (phemt) technology . this 2 mm 2 mm l fcsp amplifier can be used as either a cascadable 50 ? gain stage , or to drive the local oscillator ( lo ) port of many of the single and double balanced mixers from analog devices , inc. with up to 20 dbm output p ower. the hmc788a offers 14 d b of gain and an output ip3 of 33 dbm while requiri ng only 76 m a from a 5 v sup ply. the darlington feedback pair exhibits reduced sensitivity to normal process variations and yields excellent gain stability over temperature while requiring a minimal number of external bi as components.
hmc788a data sheet rev. b | page 2 of 12 table of contents features .............................................................................................. 1 applications ....................................................................................... 1 functi onal block diagram .............................................................. 1 general description ......................................................................... 1 revision history ............................................................................... 2 sp ecifications ..................................................................................... 3 electrical specifications ............................................................... 3 absolute maximum ratings ............................................................ 4 thermal resistance ...................................................................... 4 esd caution ...................................................................................4 pin configuration and function descriptions ..............................5 interface schematics .....................................................................5 typical performance characteristics ..............................................6 theory of operation .........................................................................9 basic connections .........................................................................9 evaluation pcb ............................................................................... 10 outline dimensions ....................................................................... 12 ordering guide ............................................................................... 12 revision history 11/2017 ? rev. a to rev. b changes to continuous power dissipation, p diss parameter a nd junction (t j ) temperature parameter, table 2 ............................. 4 this hittite microwave products data sheet has been reformatted to meet the styles and standards of analog devices, inc. 10 / 2017 ? v00.0913 to rev. a change s to product title , features section, general description section, and figure 1 ......................................................................... 1 changes to table 1 ............................................................................. 3 changes to table 2 ............................................................................. 4 added thermal resistance section and table 3; renumbered sequentially ........................................................................................ 4 changes to figure 2, table 4 , and figure 3 .................................... 5 changes to typical perfomance characteristics section ............. 6 added figure 17; renumbered sequentially ................................. 8 added theory of operation sec tion .............................................. 9 added applications information section heading ................... 10 changes to evaluation pcb section and figure 18 ................... 10 updated outline dimensions ....................................................... 12 changes to ordering guide .......................................................... 12
data sheet hmc788a rev. b | page 3 of 12 specifications electrical specifica tions collector bias voltage ( v cc ) = 5 v, t case = 25 c, 6.35 h external inductor between v cc and rf out , 50 system, unless otherwise noted. table 1 . parameter symbol min typ max unit test conditions/comments overall function frequency range 0.01 10 ghz gain 12 14 db 0.01 ghz to 6.0 ghz 9 12 db 6.0 ghz to 10.0 gh z gain variation over temperature 0.004 db/c 0.01 ghz to 6.0 ghz 0.007 db/c 6.0 ghz to 10.0 ghz reverse isolation 23 db 0.01 ghz to 6.0 ghz 20 db 6.0 ghz to 10 ghz radio frequency ( rf ) input interface input return loss 16 d b 0.01 ghz to 6.0 ghz 9 db 6.0 ghz to 10.0 ghz rf output interface output power for 1 db compression p1db 18 20 dbm 0.01 ghz to 6.0 ghz 15 18 dbm 6.0 ghz to 10.0 gh z output return loss 9 db 0.01 ghz to 6.0 ghz 12 db 6.0 ghz to 10.0 ghz dis tortion and nois e output third - order intercept o ip3 33 dbm 0.01 ghz to 6.0 ghz 30 dbm 6.0 ghz to 10.0 ghz noise figure nf 6 db 0.01 ghz to 6.0 ghz 7 db 6.0 ghz to 10.0 ghz power interface supply voltage 4.5 5 5.5 v supply current i cc 60 65 ma v cc = 4.5 v 76 ma v cc = 5 v 87 90 ma v cc = 5.5 v
hmc788a data sheet rev. b | page 4 of 12 absolute maximum rat ings table 2. parameter rating collector bias voltage (v cc ) 7 v rf input power (rf in ) , v cc = 5 v 15 dbm co ntinuous power dissipation, p diss (t case = 85c, d erate 8.5 mw/c above 85 c) 0.76 w junction ( t j ) temperature 175c operating (t opr ) temperature range ? 40 c to +85 c storage temperature range ? 65 c to +150c electrostatic discharge ( esd) sensitivit y, human body model (hbm) class 1a stresses at or above those listed under absolute maximum ratings may cause permanent damage to the product. this is a stress rating only; functional operation of the product at these or any other conditions above those i ndicated in the operational section of this specification is not implied. operation beyond the maximum operating conditions for extended periods may affect product reliability. thermal resistance thermal performance is directly linked to printed circ uit board (pcb) design and operating environment. careful attention to pcb thermal design is required. jc is the junction to case thermal resistance. table 3 . thermal resistance package type jc unit cp -6- 10 1 118. 0 c/w 1 therma l impedance simulated values are based on a jedec 2s2p thermal test board with nine thermal vias. see jedec jesd51. esd caution
data sheet hmc788a rev. b | page 5 of 12 pin configuration and function descripti ons hmc788a top view (not to scale) 2 1 3 6 5 4 gnd rf in nic nic rf out package base nic notes 1. nic = not internally connected. the pins are not connected internally; however, all data shown herein was measured with these pins connected to ground externally. 2. exposed pad. the exposed pad must be connected to ground for proper operation. 16204-002 figure 2. pin configuration table 4 . pin function descriptions pin no. mnemonic description 1, 4, 6 nic not internally connected. the pins are not connected internally; however, all data shown herei n was measured with these pins connected to gnd externally. 2 rf in rf i nput. this pin is dc - coupled and ac matched to 50 . an external dc blocking capacitor is required on this pin . 3 gnd ground. this pin must be connected to ground. 5 rf out rf output. this pin is ac matched to 50 and supplies dc bias for the outpu t stag e. epad exposed pad. the exposed pad must be connected to gnd for proper operation. interface schematics rf in rf out 16204-003 figure 3. rf in , rf out interface schematic gnd 16204-004 figure 4 . gnd interface schematic
hmc788a data sheet rev. b | page 6 of 12 typica l performance charac teristics 3020 10 0 C10C20 C30 0 2 4 6 8 10 12 14 16 gain, input return loss, and output return loss frequency (ghz) s22 s21 s11 16204-005 figure 5 . gain, input return loss, and output return loss vs. frequency ; s21 is gain, s11 is input return loss, s22 is output return loss 0 C5 C10C15 C20 C25 C30 0 2 4 6 8 10 12 input return loss (db) frequency (ghz) +85c +25c C40c 16204-006 figure 6 . input return loss vs . frequency at various temperature s C10C12 C14 C16 C18 C20 C22 C24 C26 C28 C30 0 2 4 6 8 10 12 reverse isolation (db) frequency (ghz) +85c +25c C40c 16204-007 figure 7 . reverse isolation vs. frequency at various temperatures 2015 10 5 0 2 4 6 8 10 12 gain (db) frequency (ghz) +85c +25c C40c 16204-008 figure 8 . gain vs. frequency at various temperatures 0 C5 C10C15 C20 C25 C30 0 2 4 6 8 10 12 output return loss (db) frequency (ghz) +85c +25c C40c 16204-009 figure 9 . ou tput return loss vs. frequency at various temperature s 2015 10 50 0 2 4 6 8 10 12 noise figure (db) frequency (ghz) +85c +25c C40c 16204-010 figure 10 . noise figure vs. frequency at various tempera t ures
data sheet hmc788a rev. b | page 7 of 12 2520 15 10 50 0 2 4 6 8 10 12 p1db (dbm) frequency (ghz) +85c +25c C40c 16204-0 11 figure 11 . p1db vs. frequency at various temperatures 6055 50 45 40 35 30 25 20 15 10 50 C10 C5 0 5 10 p out (dbm), gain (db), and pae (%) input power (dbm) pae gain (dbm) p out (dbm) 16204-012 figure 12 . output power ( p out ), gain, and power added efficiency ( pae ) v s. input power at 1 ghz 4540 35 30 25 20 15 10 0 2 4 6 8 10 12 output ip3 (dbm) frequency (ghz) +85c +25c C40c 16204-013 figure 13 . output ip3 vs. frequency at various temperatures ; 5 dbm per tone output power 2520 15 10 50 0 2 4 6 8 10 12 p sat (dbm) frequency (ghz) +85c +25c C40c 16204-014 figure 14 . saturation power ( p sat ) vs. frequency at various temperatures
hmc788a data sheet rev. b | page 8 of 12 3025 20 15 10 50 0 2 4 6 8 10 12 p out (dbm), gain (db), and pae (%) input power (dbm) pae gain (dbm) p out (dbm) 16204-015 figure 15 . p out , gain, and pae vs. input power at 10 gh z 4030 20 10 4.5 5.0 5.5 gain (db), p1db (dbm), and ip3 (dbm) supply voltage (v) ip3 p1db gain 16204-016 figure 16 . g ain , p1db, and i p3 vs. supply voltage at 1 ghz C80C90 C100C110 C120 C130 C140 C150 C160 C170 C180 100 1k 10k 100k 1m additive phase noise (dbc/hz) offset frequency (hz) 16204-017 figure 17 . additive phase noise vs. offset frequency ; rf frequency = 5 ghz, rf input power = 6 dbm (p1db)
data sheet hmc788a rev. b | page 9 of 12 theory of operation the hmc788a is designed with a darlington feedback pair that exhibits reduced sensitivity to normal process var iations and yields excellent gain stability ov er temperature while requiring minimal external bias components. the amplifier can be operated from a 5 v supply by adding a choke inductor from the amplifier output to v cc . basic connections the hmc788a rf gai n block is a fixed gain amplifier with single - en ded input and output ports featuring impedances nominally equal to 50 ? over the 0.01 ghz to 10 ghz frequency range . the input and output impedances are sufficiently stable across variations in temperature and supply voltage such that the hmc788a can be directly inserted into a 50 ? system w ith no impedance matching circuitry required . the inp ut pin, rf in , is dc - coupled and ac matched to 50 ?. a dc blocking capacitor must be connected between the source that drives the hmc788a and the rf in pin. it is critical to supply very low inductance g round connections to the gnd pin as well a s to the backside exposed pad, ensuring s table operation. it is recommended that the nic pins also be connected to gnd . the hmc788a is designed to operate with a supply voltage of 5 v, which is connected through a n external rf choke between the supply voltage and the output pin, rf out . the inductance of the rf choke must be approximately 6 h, and care must be taken to ensure that the lowest series self resonant frequency of this choke is well above the maximum fre quency of operation for the hmc788a . consequently, a dc blocking capacitor must be connected between the bias connection to rf o ut and the output load. the value of this cap acitor is not critical, but it is recommended to be 100 pf or larger. bypass the bia s supply voltage, v cc , using a large value capacitance (approximately 2.2 f or larger) and a smaller, high frequency bypass capacitor (approximately 100 pf). the recommended connections and components are shown in the evaluation pcb section .
hmc788a data sheet rev. b | page 10 of 12 applications informa tion evaluation pcb the pcb used in this application must use rf circuit d esign techniques. signal lines must have 50 ? impedance while the package ground leads and exposed pad must be connected directly to the ground plane similar to that shown in figure 19 . a sufficient number of via holes must be used to connect the top and bottom ground planes. the ev1hmc788a l p2 evaluation bo ard m us t be m ount ed to an appropriate heat sink. figure 18 shows the schematic of the ev1hmc788alp2 evaluation board. the board is powered by a single supply between 4.5 v and 5.5 v and is decoupled by a 2.2 f capacitor and a 100 pf capacitor. dc blocking capacitors are installed at the rf in and rf out ports. note that inductor l1 is a required component to apply the v cc = 5 v bias to the rf out pin. rf in rf out package bottom must be connected to rf ground. v cc pin 2 pin 3 pin 5 c1 .01f c4 2.2f l1 6.35h c2 .01f c3 100pf 16204-018 figure 18 . evaluation board schematic table 5. list of materials for the evaluation pcb ev1hmc788alp2 1 item description j1 to j2 pcb m ount subminiature version a ( sma ) c onnector j5, j6 dc p in c1, c2 0.01 f c apacitor, 0502 package c3 100 pf c apacitor, 0402 package c4 2.2 f case a package r1 0 r esistor, 0402 package l1 inductor, c onical 6.35 h u1 hmc788alp2e pcb 2 129549 e valuation pcb 1 reference this number when ordering the complete evaluation pcb . 2 the c ircuit b oard m aterial is rogers 4350 .
data sheet hmc788a rev. b | page 11 of 12 16204-019 figure 19 . evaluation board , top view
hmc788a data sheet rev. b | page 12 of 12 outline dimensions 1.50 1.40 1.30 0.40 0.35 0.30 top view side view 0.30 0.25 0.20 bot tom v iew pin 1 index area 0.90 0.85 0.80 0.90 0.80 0.70 0.203 ref 0.05 max 0.02 nom 1.30 ref 0.65 bsc exposed pad 02-09-2017-c pkg-004900/005352 2.05 2.00 sq 1.95 5 8 1 4 coplanarity 0.08 for proper connection of the exposed pad, refer to the pin configuration and function descriptions section of this data sheet. sea ting plane pin 1 indic at or area options (see detail a) detail a (jedec 95) figure 20 . 6- lead lead frame chip scale package [lfcsp] 2 mm 2 mm body and 0.85 mm package height ( cp -6- 10 ) dimensions shown in millimeter s ordering guide model 1 temperature range msl rating 2 package description package option hmc788alp2e ?40c to +85c msl1 6- lead lead frame chip scale package [lfcsp] cp -6- 10 hmc788a lp2etr ?40c to +85c msl1 6- lead lead frame chip scale package [lfcsp] cp -6- 10 ev1 hmc788a lp2 evaluation board 1 all models are rohs compliant. 2 see the absolute maximum ratings section. ? 2017 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d16204 -0- 11/17(b)

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