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2.3 ghz to 4.0 ghz ? watt rf driver amplifier data sheet adl5321 rev. c 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 infringements of patents or other rights of third parties that may result from its use. specifications sub ject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, no rwood, ma 02062 - 9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ? 2008 C 2012 analog devices, inc. all rights reserved. features operation: 2.3 ghz to 4.0 ghz gain of 14.0 db at 2.6 ghz oip3 of 41.0 dbm at 2.6 ghz p1db of 25.7 dbm at 2.6 ghz noise figure: 4.0 db at 2.6 ghz power supply voltage: 3.3 v to 5 v power supply current: 37 ma to 90 ma dynamically adjustable bias no bias resistor required thermally efficient, msl - 1 rated sot - 89 package operating temperature range: ?40c to +105c esd rating of 2 kv (class 3a) applications wireless infrastructure automated test equipment functional block dia gram figure 1. ism/amr applications general description the adl532 1 incorporates a dynamically adjustable biasing circuit that allows for the customization of oip3 and p1db performance from 3.3 v to 5 v wit hout the need for an external bias resistor. this feature gives the designer the ability to tailor driver amplifier performance to the specific needs of the design. this feature also creates the opportunity for dynamic biasing of the driver amplifier, wher e a variable supply is used to allow for full 5 v biasing under large signal conditions and then can reduce the supply voltage when signal levels are smaller and lower power consumption is desirable. this scalability reduces the need to evaluate and invent ory multiple driver amplifiers for different output power requirements from 22 dbm to 26 dbm output power levels. the adl532 1 is also rated to operate across the wide temper - ature range of ?40c to +105c for reliable performance in designs that experie nce higher temperatures, such as power amplifiers. the 1 M 4 watt driver amplifier covers the 2.3 g hz to 4.0 g hz wide frequency range and only requires a few external components to be tuned to a specific band within that wide range. this high performance, broadband rf driver amplifier is well suited for a variety of wired and wireless applications including cellu lar infrastructure, ism band power amplifiers, defense equipment, and instrumentation equipment. a fully populated evaluation board is available. the adl532 1 also delivers excellent adjacent channel leakage ratio (aclr) vs. p out . for output powers up to 1 0 dbm rms, the adl5321 adds very little d istortion to the output spectrum. at 2.6 ghz, the aclr is ?59 db and a relative constellation error of ?46.6 db (<0.5% evm) at an output power of 10 dbm rms. figure 2. wimax 64 qam, 10 mh z bandwidth, single carrier rfin gnd rfout 1 2 bias 3 gnd adl5321 (2) 07307-001 07307-125 ?30 ?40 ?50 ?60 ?70 ?80 ?90 ?10 ?5 0 5 10 15 20 aclr (db) p out (dbm) adj ch l ow 2.6 ghz alt ch low 2.6 ghz adj ch l ow 3.5 ghz alt ch up 3.5 ghz
adl5321 data sheet rev. c | page 2 of 16 table of contents features .............................................................................................. 1 functional block diagram .............................................................. 1 general description ......................................................................... 1 revision history ............................................................................... 2 specifications ..................................................................................... 3 typical scattering parameters ..................................................... 4 absolute maximum ratings ............................................................ 5 thermal resistance ...................................................................... 5 esd caution .................................................................................. 5 pin configuration and function descriptions ............................. 6 typical performance characteristics ..............................................7 high temperature and 3.3 v operation ..................................... 10 basic layout connections ............................................................. 11 soldering information and recommended pcb land pattern .......................................................................................... 11 matching procedure ................................................................... 12 wimax operation .................................................................... 13 evaluation b oard ............................................................................ 14 outline dimensions ....................................................................... 16 ordering guide .......................................................................... 16 revision histo ry 7/ 12 rev. b to rev. c change to title .................................................................................. 1 changes to table 1 ............................................................................ 3 replaced table 2 ............................................................................... 4 changes to table 3 and table 4 ................................................................ . 5 added figure 20 ; renumbered sequentially ......................................... 9 moved high temperature and 3.3 v operation section and added figure 30 to figure 32 ................................................................................ 10 changes to soldering information and recommended pcb land pattern section and changes to figure 22 .................................. 11 6/ 10 rev. a to rev. b changes to general description section ...................................... 1 changes to operat ing temperature range, table 3 .................... 4 added high temperature operation section, figure 27, figure 28, and figure 29 ................................................................................... 13 changes to ordering guide .......................................................... 16 2/09 rev. 0 to rev. a updated outline dimensions ................................ ....................... 15 changes to ordering guide .......................................................... 15 5 /08 revision 0: init ial version
data sheet adl5321 rev. c | page 3 of 16 specifications t a = 25c, unless otherwise noted. table 1. 3.3 v 5 v parameter conditions min typ max min typ max unit overall function frequency range 2.3 4.0 2.3 4.0 ghz frequency = 2.6 ghz gain 1 12.6 13.2 14.0 14.6 db vs. frequency 100 mhz 0.3 0.4 db vs. temperature ?40c t a +85c 0.6 0.7 db vs. supply 3.2 v to 3.4 v, 4.75 v to 5.25 v 0.16 0.07 db output 1 db compression point, p1db 22.0 25.7 dbm output third - order intercept, oip3 f = 1 mhz, p out = 5 dbm per tone 31 41 dbm noise figure 3.5 4.0 db frequency = 3.5 ghz gain 1 10.4 11.1 12.0 12.9 db vs. frequency 100 mhz 0.17 0.05 db vs. temperature ?40c t a +85c 0.7 0.8 db vs. supply 3.2 v to 3.4 v, 4.75 v to 5.25 v 0.2 0.07 db output 1 db compression point, p1db 24.7 25.7 dbm output third - order intercept, oip3 f = 1 mhz, p out = 5 dbm per tone 27 38 dbm noise figure 4.3 4.9 db power interface pin rf out supply voltage 3.3 4.5 5 5.5 v supply current 37 90 100 ma vs. temperature ?40c t a +85c 4.0 6.0 ma power dissipation vcc = 3.3 v , vcc = 5 v 122 520 mw 1 guaranteed maximum and minimum specified limits on this parameter are based on six sigma calculations.
adl5321 data sheet rev. c | page 4 of 16 typical scattering p arameters vcc = 5 v and t a = 25 c; the effects of the test fixture have been de - embedded up to the pins of the device. table 2 . frequency (mhz) s11 s21 s12 s2 2 magnitude (db) angle () magnitude (db) angle () magnitude (db) angle () magnitude (db) angle () 2400 ? 4.54 129.60 11.90 21.92 ? 26.72 ? 33.83 ? 8.18 ? 166.39 2450 ? 4.65 126.65 11.89 18.30 - 26.63 ? 36.64 ? 8.27 ? 169.02 2500 ? 4.79 123.62 11.88 14.57 - 26.55 ? 39.62 ? 8.37 ? 171.83 2550 ? 4.92 120.44 11.87 10.68 ? 26.48 ? 42.70 ? 8.45 ? 175.32 2600 ? 5.04 117.31 11.85 6.80 ? 26.42 ? 45.95 ? 8.44 ? 179.11 2650 ? 5.17 114.43 11.83 2.90 ? 26.37 ? 49.25 ? 8.39 177.31 2700 ? 5.33 111.78 11.80 ? 1.06 ? 26.34 ? 52.65 ? 8.33 173.43 2750 ? 5.50 109.21 11.77 ? 5.17 ? 26.31 ? 56.16 ? 8.15 169.22 2800 ? 5.70 106.84 11.74 ? 9.36 ? 26.30 ? 59.84 ? 7.90 165.46 2850 ? 5.94 104.85 11.71 ? 13.64 ? 26.30 ? 63.64 ? 7.63 161.87 2900 ? 6.25 103.23 11.66 ? 18.05 ? 26.31 ? 67.63 ? 7.31 158.01 2950 ? 6.61 101.91 11.62 ? 22.58 ? 26.34 ? 71.77 ? 6.88 154.58 3000 ? 7.03 101.06 11.56 ? 27.18 ? 26.37 ? 76.13 ? 6.44 151.64 3050 ? 7.53 100.92 11.50 ? 31.98 ? 26.44 ? 80.76 ? 6.00 148.53 3100 ? 8.12 101.82 11.40 ? 36.95 ? 26.55 ? 85.61 ? 5.53 145.65 3150 ? 8.78 104.04 11.29 ? 42.09 ? 26.68 ? 90.69 ? 5.03 143.14 3200 ? 9.47 107.91 11.15 ? 47.34 ? 26.85 ? 95.96 ? 4.56 140.74 3250 ? 10.07 113.72 10.97 ? 52.74 ? 27.06 ? 101.50 ? 4.08 138.36 3300 ? 10.45 121.55 10.76 ? 58.29 ? 27.32 ? 107.30 ? 3.61 136.16 3350 ? 10.45 130.87 10.49 ? 63.95 ? 27.65 ? 113.32 ? 3.19 133.97 3400 ? 10.02 140.04 10.17 ? 69.56 ? 28.05 ? 119.45 ? 2.80 131.77 3450 ? 9.25 147.61 9.80 ? 75.16 ? 28.49 ? 125.70 ? 2.43 129.85 3500 ? 8.28 153.06 9.39 ? 80.70 ? 29.00 ? 132.04 ? 2.13 128.08 3550 ? 7.27 156.76 8.92 ? 86.04 ? 29.58 ? 138.45 ? 1.89 126.22 3600 ? 6.34 159.01 8.39 ? 91.20 ? 30.20 ? 144.79 ? 1.66 124.51 3650 ? 5.51 160.11 7.83 ? 96.07 ? 30.88 ? 151.12 ? 1.48 123.23 3700 ? 4.78 160.43 7.26 ? 100.64 ? 31.57 ? 157.36 ? 1.37 122.16 3750 ? 4.14 160.36 6.66 ? 104.97 ? 32.29 ? 163.69 ? 1.27 121.07 3800 ? 3.60 160.07 6.04 ? 108.96 ? 33.02 ? 170.01 ? 1.19 120.25 3850 ? 3.16 159.62 5.43 ? 112.61 ? 33.74 ? 176.34 ? 1.14 119.79 3900 ? 2.78 158.95 4.82 ? 116.07 ? 34.44 177.21 ? 1.12 119.31 3950 ? 2.45 158.24 4.20 ? 119.27 ? 35.12 170.60 ? 1.10 118.94 4000 ? 2.17 157.64 3.60 ? 122.18 ? 35.74 163.89 ? 1.09 118.86
data sheet adl5321 rev. c | page 5 of 16 absolute maximum rat ings table 3. parameter rating supply voltage, vcc 6.5 v input power , 50 impedance 20 dbm internal power dissipation , paddle soldered 683 mw jc , junction to paddle 28.5 c/w maximum junction temperature 150c operating temperature range ?40c to + 105c storage temperature range ?65c to +150c stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. thermal resistance table 4 lists the junction - to - air thermal resistance ( ja ) and the junction - to - paddle thermal resistance ( jc ) for the adl532 1 . table 4 . thermal resistance package type ja 1 jc 2 unit 3- lead sot - 89 35 11 c/w 1 measured on analog devices evaluation b oard. for more information about board layout, see the soldering information and recommended pcb land pattern section. 2 based on simulation with jedec standard jesd51 . esd caution
adl5321 data sheet rev. c | page 6 of 16 pin configuration and function descripti ons figure 3 . pin configuration table 5 . pin function descriptions pin o. mnemonic description 1 rfin rf input. this pin r equires a dc blocking capacitor . 2 gnd ground. connect this pin to a low impedance ground plane. 3 rfout rf output and supply voltage. dc bias is provided to this pin through an inductor that is connected to the external power supply. rf path requires a dc blocking capacitor. exposed paddle expose paddle. internally connected to gnd. solder to a low impedan ce ground plane. rfin gnd rfout 1 2 3 gnd adl5321 top view (not to scale) (2) 07307-002
data sheet adl5321 rev. c | page 7 of 16 typical performance characteristics figure 4 . gain, p1db, oip3, and noise figure vs. frequency , 2.5 g hz to 2.7 g hz figure 5 . gain vs. frequency and temperature , 2.5 ghz to 2.7 ghz figure 6. reverse isolation (s12), input return loss (s11) , and output return loss (s22 ) vs. frequenc y , 2.2 g hz to 2.9 ghz figure 7 . oip3 and p1db vs. frequency and temperature , 2.5 g hz to 2.7 g hz figure 8 . oip3 vs. p out and frequency , 2.5 ghz to 2.7 ghz figure 9 . noise figure vs. frequency and temperature , 2.2 g hz to 2.9 ghz 45 40 35 30 25 20 15 10 5 0 07307-003 frequency (ghz) gain, p1db, oip3, noise figure (db, dbm) noise figure gain p1db oip3 (5dbm) 2.500 2.525 2.550 2.575 2.600 2.625 2.650 2.675 2.700 16.0 15.5 15.0 14.5 14.0 13.5 13.0 12.5 12.0 11.5 07307-004 gain (db) ?40 c + 85 c + 25 c frequency (ghz) 2.500 2.525 2.550 2.575 2.600 2.625 2.650 2.675 2.700 ?24.0 ?24.2 ?24.4 ?24.6 ?24.8 ?25.0 ?25.2 ?25.4 ?25.6 ?25.8 ?26.0 0 ?2 ?4 ?6 ?8 ?10 ?12 ?14 ?16 07307-005 s12 (db) s11 (db) and s22 (db) frequency (ghz) 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 s12 s11 s22 42 41 40 39 38 37 36 35 34 30 29 28 27 26 25 24 07307-006 oip3 (dbm) p1db (dbm) frequency (ghz) p1db ( ?40 c) p1db (+ 85 c) oip3 (+ 85 c) oip3 (+ 25 c) oip3 ( ?40 c) p1db (+ 25 c) 2.500 2.525 2.550 2.575 2.600 2.625 2.650 2.675 2.700 46 44 42 40 38 36 34 32 30 ?4 ?2 0 2 4 6 8 10 12 14 16 18 20 22 07307-007 oip3 (dbm) p out (dbm) 2.5ghz 2.7ghz 2.6ghz 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 07307-008 noise figure (db) frequency (ghz) 2.2 2.3 2.4 2.5 2.6 +85c +25c ?40c 2.7 2.8 2.9
adl5321 data sheet rev. c | page 8 of 16 figure 10 . gain, p1db, oip3, and noise figure vs. frequency , 3.4 g hz to 3.6 g hz figure 11 . gain vs. frequency and temperature , 3.4 ghz to 3.6 ghz figure 12 . reverse isolation (s12), input return loss (s11), and output return loss (s22) vs. frequenc y, 3.2 g hz to 4.0 g hz figure 13 . oip3 and p1db vs. frequency and temperature , 3.4 ghz to 3.6 ghz figure 14 . oip3 vs. p out and frequency , 3.4 ghz to 3.6 ghz figure 15 . noise figure vs. frequency and temperature , 3.2 g hz to 4.0 g hz 3.400 3.425 3.450 3.475 3.500 3.525 3.550 3.575 3.600 45 40 35 30 25 20 15 10 5 0 07307-009 frequency (ghz) gain p1db oip3 (5dbm) gain, p1db, oip3, noise figure (db, dbm) noise figure 3.400 3.425 3.450 3.475 3.500 3.525 3.550 3.575 3.600 14.0 13.5 13.0 12.5 12.0 11.5 11.0 10.5 10.0 07307-010 gain (db) frequency (ghz) ?40 c + 85 c + 25 c ?25 ?26 ?27 ?28 ?29 ?30 ?31 ?32 ?33 ?34 ?35 0 ?5 ?10 ?15 ?20 ?25 ?30 07307-011 s12 (db) s11 (db) and s22 (db) frequency (mhz) 3.2 3.3 3.4 3.6 3.5 3.7 3.8 3.9 4.0 s 11 s 12 s 22 42 41 40 39 38 37 36 35 34 33 32 30 29 28 27 26 25 24 07307-012 oip3 (dbm) p1db (dbm) frequency (mhz) 3.400 3.425 3.450 3.475 3.500 3.525 3.550 3.575 3.600 p1db ( ?40 c) p1db (+ 85 c) oip3 (+ 25 c) oip3 (+ 85 c) oip3 ( ?40 c) p1db (+ 25 c) 42 40 38 36 34 32 30 ?4 ?2 0 2 4 6 8 10 12 14 16 18 20 22 07307-013 oip3 (dbm) p out (dbm) 3.6ghz 3.5ghz 3.4ghz 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 07307-014 noise figure (db) frequency (ghz) 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 ?40c +25c +85c
data sheet adl5321 rev. c | page 9 of 16 figure 16 . oip3 distribution at 2.6 g hz figure 17 . p1db distribution at 2.6 g hz figure 18 . gain distribution at 2.6 g hz figure 19 . noise figure (nf) distribution at 2.6 g hz figure 20 . supply current vs. temperature and supply voltage (using 2.6 g hz matching components ) figure 21 . supply current v s. p out 3.3 v and 5 v ( 2.6 ghz matching components ) 30 25 20 15 10 5 0 07307-015 percentage (%) oip3 (dbm) 39.4 39.8 40.2 40.6 42.2 42.6 41.0 41.4 41.8 39.6 40.0 40.4 40.8 42.4 41.2 41.6 42.0 35 30 25 20 15 10 5 0 07307-016 percentage (%) p1db (dbm) 24.6 25.0 25.4 25.8 27.0 26.2 26.6 24.8 25.2 25.6 26.0 26.4 26.8 35 30 25 20 15 10 5 0 07307-017 percentage (%) gain (db) 13.70 13.80 13.90 14.00 14.25 14.10 14.15 13.75 13.85 13.95 14.05 14.20 30 25 20 15 10 5 0 07307-018 percentage (%) nf (db) 3.76 3.84 3.92 4.00 4.08 3.80 3.88 3.96 4.04 4.12 4.16 110 105 100 95 90 85 80 75 70 07307-019 supply current (ma) temperature (c) ?40 ?30 ?20 ?10 0 10 20 30 40 50 60 70 80 5.25v 5.0v 4.75v 220 20 ?6 28 supply cuurent (ma) p out (dbm) 40 60 80 100 120 140 160 180 200 ?4 ?2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 5v 3.3v 07307-120
adl5321 data sheet rev. c | page 10 of 16 high temperature and 3.3 v o peration the adl532 1 has excellent performance at temperatures above 85c. at 105c, the gain and p1db decrease by 0.2 db, the oip3 decreases by 0.1 db, and the noise figure increases by 0.31 db compared with the data at 85c. figure 25 through figure 27 show the performance at 105c. figure 22 . gain vs. frequency and temperature, 5 v supply , 2.5 ghz to 2.7 ghz figure 23 . oip3 and p1db vs. f requency and temperature, 5 v s upply , 2.5 ghz to 2.7 ghz figure 24 . noise figure vs. frequency and temperature, 5 v s upply , 2.5 ghz to 2.7 ghz figure 25 . gain vs. frequency and temperature, 3.3 v supply , 2.5 ghz to 2.7 ghz figure 26 . oip3 and p1db vs. fre quency and temperature, 3.3 v s upply , 2.5 ghz to 2.7 ghz figure 27 . noise figure vs. frequency and temperature, 3.3 v s upply 2.5 ghz to 2.7 ghz 16.0 15.5 15.0 14.5 14.0 13.5 13.0 12.5 12.0 11.5 2.500 2.700 2.675 2.650 2.625 2.600 2.575 2.550 2.525 gain (db) frequency (ghz) 07307-030 25c 85c 105c 42 41 40 39 38 37 36 35 34 32 31 30 29 28 27 26 25 24 2.500 2.700 2.675 2.650 2.625 2.600 2.575 2.550 2.525 oip3 (dbm) p1db (dbm) frequency (ghz) 07307-031 25c 85c 105c oip3 p1db 5.5 5.0 4.5 4.0 3.5 3.0 2.50 2.70 2.65 2.60 2.55 noise figure (db) frequency (ghz) 07307-032 25c 85c 105c 15.0 10.0 2.500 2.525 2.700 2.675 2.650 2.625 2.600 2.575 2.555 gain (db) frequency (ghz) 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 25c 85c 105c ?40c 07307-130 33 26 2.500 2.525 2.700 2.675 2.650 2.625 2.600 2.575 2.555 oip3 (dbm) p1db (dbm) frequency (ghz) 27 28 29 30 31 32 27 20 21 22 23 24 25 26 p1db ( 25 c) p1db ( ?40 c) p1db (+ 105 c) p1db (+ 85 c) oip3 (+ 25 c) oip3 ( ?40 c) oip3 (+ 85 c) oip3 (+ 105 c) 07307-131 7 5 6 4 3 2 1 2.2 2.9 2.5 2.6 2.8 2.7 2.4 2.3 noise figure (db) frequency (ghz) 85c 105c 25c ?40c 07307-132
data sheet adl5321 rev. c | page 11 of 16 basic layout connections the basic connections for operating the adl532 1 are shown in figure 28 . table 6 lists the required matching components. capacitors c1, c2, c3, c4 , and c7 are mu rata grm15 5 series (0402 size) and i nductor l1 is a coilcraft 0603cs series (0603 size). for all frequency bands , the placement of c3 and c7 is cr itical. from 25 00 mhz to 2700 mhz , the placement of c 1 is also important. table 7 lists the recommended component placement for various frequencies. a 5 v dc bias is supplied through l1 that is connected to rfout (p in 3) . in addition to c4, 10 nf and 10 f power supply dec oupling capacitor s are also required. the typical current consumption for the adl532 1 is 90 ma. figure 28 . basic connections soldering information and recommended pcb land pattern figure 29 shows the recommended land pattern for the adl532 1 . to minimize thermal impedance, the exposed paddle on the sot - 89 package underside is soldered down to a ground plane along with (gnd) pin 2 . if multiple ground layers exist, they should be stitched together using vias. for more information on land patter n design and layout, refer to the an - 772 application n ote , a design and manufacturing guide for the lead frame chip scale package (lfcsp) . this land pattern, on the adl532 1 evaluation board, provides a measured thermal resistance ( ja ) of 35 c/w. to measure ja , the temperature at the top of the sot - 89 package is found with an ir temperature gun. thermal simulation suggests a junction temperature 10c higher than the top of package temperature. with additional ambient temperature and i/o power measure - ments, ja could be determined. figure 29 . recommended land pattern table 6 . recommended components for basic connections frequency (mhz) c1 (pf) c2 (pf) c3 (pf) c4 (pf) c7 (pf) l1 (nh) 2500 to 2700 1.0 10 1.2 10 open 9.5 34 00 to 3850 10 10 1.2 10 1.0 9.5 table 7 . matching component spacing frequency (mhz) 1 (mils) 2 (mils) 3 (mils) 4 (mils) 2500 to 2700 240 75 89 325 3400 to 3850 90 35 40 416 rfin gnd gnd rfout 1 2 (2) 3 adl5321 c6 10f c5 10nf c4 1 l1 1 vcc gnd rf in c2 1 c3 1 rf out c1 1 c7 1 1 2 3 2 4 2 2 2 1 see t able 5 for frequenc y specific components. 2 see t able 6 for recommended component s p acing. 07307-026 0.86mm 5.56mm 0.20mm 1.80mm 1.27mm 0.62mm 3.48mm 1.50mm 3.00mm 07307-051
adl5321 data sheet rev. c | page 12 of 16 matching procedure the adl532 1 is designed to achieve excellent gain and ip3 performance. to achieve this, both input and output matching networks must present specific impedance to the device. the matching components listed in table 6 were chosen to provide ? 14 db input return loss while maximizing oip3. the load - pull plots ( see figure 30 , figure 31 , and figure 32 ) show the load impedance points on the s mith chart where optimum oip3, g ain , and o utput p ower can be achieved. these load impedance value s (that is, the impedance that the device sees when looking into the outpu t matching network) are listed in table 8 and table 9 for ma ximum gain and maximum oip3 , respectively. the contours show how each parameter degrades as it is move d away from the optimum point. f rom the data sh own in table 8 and table 9 , it becomes clear that maximum gain and maximum o ip3 do not oc cur at the same impedance. this can also be seen on the load - pull contours in figure 30 through figure 32 . th erefore , output matching generally involves compromising between gain and oip3. in addition, the load - pull plots demonstrate that the quality of the output impedance match must b e compromised to optimize gain and/ or oip3. in most applications where line lengths are short and where the next device in the signal chain presents a low input return loss, co mpromising on the output match is acceptable. to adjust the output match for operation at a different frequency or if a different trade - off between oip3, gain , and output impedance is desired, the following procedure is recommended. for example , to optimize the adl532 1 for op timum oip3 and gain at 230 0 mhz , use the following steps: 1. install the recommended tuning components for a 250 0 mhz to 270 0 mhz tuning band , but do not install c3 and c7 . 2. connect the evaluation board to a vector network analyzer so that input and output return loss can be viewed sim ulta - neously . 3. starting with the recommended values and positions for c3 and c7, adjust the positions of these capacitors along the transmission line until the return loss and gain are acceptable. push - down capacitors that are mounted on small sticks can be used in this case as an alternative to soldering. if moving the component positions does not yield satisfactory results, then the values of c3 and c7 should be increased or decreased (most likely in creased in this case because the user is tuning for a lower frequency). r epeat the process. 4. once the desired gain and return loss are realized, o ip3 should be measured. it may be necessary to go back and forth between return loss/gain and oip3 measurements (probably compromising most on output return loss) until an acceptable compromise is achieved . figure 30 . load- pull contours , 260 0 mhz figure 31 . load - pull contours , 350 0 mhz figure 32 . load - pull contours , 3 600 mhz 07307-022 load fixed load pul l freq = 2.6000 ghz ip3 max = 41.70dbm a t 0.4705< 86.63 10 con t ours, 1.00dbm ste p (32.00 t o 41.00dbm) pout max = 14.16dbm a t 0.6100< 136.24 10 con t ours, 1.00dbm ste p (5.00 t o 14.00dbm) gt max = 15.02dbm a t 0.6100< 136.24 10 con t ours, 1.00dbm ste p (6.00 t o 15.00db) specs: off 0.404< 93.05 07307-023 load fixed load pul l freq = 3.5000 ghz ip3 max = 41.37dbm a t 0.69 1 1< 142. 11 10 con t ours, 1.00dbm ste p (32.00 t o 41.00dbm) pout max = 14.96dbm a t 0.7686< 162.58 10 con t ours, 1.00dbm ste p (5.00 t o 14.00dbm) gt max = 14.02dbm a t 0.7686< 162.58 10 con t ours, 1.00dbm ste p (5.00 t o 14.00db) specs: off 0.875< ?147.48 07307-024 load fixed load pul l freq = 3.6000 ghz ip3 max = 41.29dbm a t 0.7070< 140.65 10 con t ours, 1.00dbm ste p (32.00 t o 41.00dbm) pout max = 15.63dbm a t 0.7057< 161.81 10 con t ours, 1.00dbm ste p (6.00 t o 15.00dbm) gt max = 13.44dbm a t 0.7057< 161.81 10 con t ours, 1.00dbm ste p (4.00 t o 13.00db) specs: off
data sheet adl5321 rev. c | page 13 of 16 table 8 . load conditions for gain m ax frequ ency (mhz) load (magnitude) load () gain m ax (db) 2600 0.6100 136.24 15.02 3500 0.7686 162.58 14.02 3600 0.7057 161.81 13.44 table 9 . load conditions for o ip3 max frequency (mhz) load (magnitude) load () ip3 m ax (dbm) 2600 0.4705 86.63 41.7 3500 0.6911 142.11 41.37 3600 0.7070 140.65 41.29 wi max operation figure 33 shows a plot of adjacent channel leakage ratio (aclr) vs. p out for the adl532 1 . the si gnal type used is a wimax, 64 qam, single carrier with a 10 mhz channel bandwidth. this signal is generated by a wimax - enabled source and followed with suitabl e band - pass filtering. the band - pass filter helps reduce the adjacent and alternate channel noise and distortion out of the signal generator down to ?63 db in the adjacent channels and ?76 db in the alternate channels at 2.6 ghz and ?60 db at 3.5 ghz. below an output power of 7 dbm, measured adl532 1 output spec tral performance is limited by the signal quality from the signal source used (?63 db at 2.6 ghz and ?60 db at 3.5 ghz). at high power operation, input power to the adl5321 is 1 dbm for 15 dbm output power and the source aclr is ?60.2 db. it is expected t hat with a better signal source, the adl532 1 output spectral quality i mprove s further, especially at output power levels 10 dbm. for instance, the adl5373 quadrature modulator measured aclr is ?69 db for an ou tput power of ?10 dbm. for output powers up to 10 dbm rms, the adl532 1 adds very little d istortion to the output spectrum. at 2.6 ghz, the aclr is ?59 db and a relative constellation error of ?46.6 db (<0.5% evm) at an output power of 10 dbm rms . figure 33 . aclr v s. p out , wimax 64 qam , 10 mhz bandwidth , single carrier figure 34 . rce/evm vs. p out , wimax 64 qam , 10 mhz bandwidth , single carrier ?30 ?40 ?50 ?60 ?70 ?80 ?90 ?10 ?5 0 5 10 15 20 07307-025 aclr (db) p out (dbm) adj ch l ow 2.6 ghz alt ch low 2.6 ghz adj ch l ow 3.5 ghz alt ch up 3.5 ghz 0 ?5 ?10 ?15 ?20 ?25 ?30 ?35 ?40 ?45 ?50 ?20 ?15 ?10 ?5 0 5 10 15 20 07307-126 rce/evm (db) p out (dbm) 2.6 g hz 3.5 g hz
adl5321 data sheet rev. c | page 14 of 16 evaluation board the schematic of the adl532 1 evaluation board is shown in figure 35 . this e valuation board uses 25 mil wide traces and is made from is410 material (lead - free version of fr4) . the evaluation board comes tuned for operation in the 2500 mhz to 2 70 0 mhz tuning band. tuning options for other frequency bands are also provided in table 10. the recommended placement for these components is provided in table 11 . the inputs and outputs should be ac - coupled with appropriately sized capacitors. dc bias is provided to the amplifier via an inductor connected to the rf out pin. a bias voltage of 5 v is recommended. figure 35 . evaluation board, 2500 mhz to 2700 mhz table 10. evaluation board configuration options component function 250 0 mhz to 27 00 mhz 34 00 mhz to 385 0 mhz c1, c2 ac coupling capacitors c1 = 0402, 1 . 0 pf c1 = 0402, 10 pf c2 = 0402, 10 pf c2 = 0402, 10 pf c4, c5, c6 power supply bypassing capacitors c4 = 0603 , 10 pf c4 = 0603 , 10 pf c5 = 0603, 10 nf c5 = 0603 , 10 nf c6 = 1206, 10 f c6 = 1206 , 10 f l1 dc bias inductor 0603, 9.5 nh 0603, 9.5 nh c3, c7 tuning capacitors c3 = 0402 , 1.2 pf c3 = 0402 , 1. 2 pf c7 = 0402 , open c7 = 0402 , 1. 0 pf vcc, gnd power supply connections vcc, red test loop vcc, red test loop gnd , black test loop gnd , black test loop table 11. recommended component spacing on evaluation board frequency (mhz) 1 (mils) 2 (mils) 3 (mils) 4 (mils) 2500 to 2700 240 75 89 325 34 00 to 3850 90 35 40 416 rfin gnd gnd rfout 1 2 (2) 3 adl5321 c6 10f c5 10nf c4 10pf l1 9.5nh vcc gnd rf in c2 10pf c3 1.2pf rf out c1 1.0pf c7 open 1 3 4 2 07307-127
data sheet adl5321 rev. c | page 15 of 16 figure 36 . evaluation board layout and default component placement for operation from 2500 mhz to 2700 mhz ( note: c7 is not pla ced ) figure 37 . evaluation board layout and component placement for operation from 3400 mhz to 3850 mhz 10f c1 1.0 pf c2 10pf 10 nf 10 pf 9.5 nh c3 1.2 pf 1 2 (2) 3 07307-028 07307-029 10f c3 1.2 pf c1 10 pf c7 c2 10 pf 10 nf 10 pf 9.5 nh 1 2 (2) 3
adl5321 data sheet rev. c | page 16 of 16 outline dimensions figure 38 . 3- lead small outline tra nsistor package [sot - 89] (rk - 3) dimensions shown in millimeters ordering guide model 1 temperature range package description package option ADL5321ARKZ -r7 ?40c to + 105c 3- lead sot - 89, 7 tape and reel rk -3 adl5321 - evalz evaluation board 1 z = rohs compliant part. * compliant to jedec standards to-243 with the exception of dimensions indicated by an asterisk. 4.25 3.94 4.60 4.40 * 1.75 1.55 1.50 typ 3.00 typ end view 2.60 2.30 1.20 0.75 1 2 (2) 3 2.29 2.14 * 0.56 0.36 * 0.52 0.32 1.60 1.40 0.44 0.35 12-18-2008-b ? 2008 C 2012 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d07307 -0- 7/12 (c)

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