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20 mhz to 500 mhz if gain block adl5531 rev. 0 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 subject 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, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2007 analog devices, inc. all rights reserved. features fixed gain of 20 db operation up to 500 mhz input/output internally matched to 50 integrated bias control circuit output ip3 41 dbm at 70 mhz 39 dbm at 190 mhz output 1 db compression: 20.6 db at 190 mhz noise figure: 2.5 db at 190 mhz single 5 v power supply small footprint 8-lead lfcsp adl5532 15 db gain version adl5534 20 db gain dual-channel version 2 kv esd (class 2) functional block diagram 5clin 8nc nc nc = no connect 4 6nc rfin 2 7rfout nc 3 adl5531 bias control linearizer 06833-001 nc 1 figure 1. general description the adl5531 is a broadband, fixe d-gain, linear amplifier that operates at frequencies up to 500 mhz. the device can be used in a wide variety of equipment, including cellular, satellite, broadband, and instrumentation equipment. the adl5531 provides a gain of 20 db, which is stable over frequency, temperature, power supply, and from device to device. this amplifier is single-ended and internally matched to 50 . only input/output ac coupling capacitors, power supply decoupling capacitors, and external inductors are required for operation. the adl5531 is fabricated on a gaas hbt process and has an esd rating of 2 kv (class 2). the device is packaged in an 8-lead 3 mm 3 mm lfcsp that uses an exposed paddle for excellent thermal impedance. the adl5531 consumes 100 ma on a single 5 v supply and is fully specified for operation from ?40c to +85c. the 15 db gain version, adl5532, and the dual-channel 20 db gain version, adl5534, are also available.
adl5531 rev. 0 | page 2 of 12 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 esd caution .................................................................................. 5 pin configuration and function descriptions ............................. 6 typical performance characteristics ..............................................7 basic connections .............................................................................9 soldering information and recommended pcb land pattern ..........................................................................................................9 evaluation board ............................................................................ 10 outline dimensions ....................................................................... 11 ordering guide .......................................................................... 11 revision history 8/07revision 0: initial version
adl5531 rev. 0 | page 3 of 12 specifications vpos = 5 v and t a = 25c, unless otherwise noted. table 1. parameter conditions min typ max unit overall function frequency range 20 500 mhz gain (s21) 190 mhz 20.3 db input return loss (s11) 190 mhz ?19.5 db output return loss (s22) 190 mhz ?26.5 db reverse isolation (s12) 190 mhz ?23.0 db frequency = 70 mhz gain 20.9 db vs. frequency 5 mhz 0.03 db vs. temperature ?40c t a +85c 0.22 db vs. supply 4.75 v to 5.25 v 0.19 db output 1 db compression point 20.4 dbm output third-order intercept f = 1 mhz, output power (p out ) = 0 dbm per tone 41.0 dbm noise figure 2.5 db frequency = 190 mhz gain 19.7 20.3 21.0 db vs. frequency 50 mhz 0.12 db vs. temperature ?40c t a +85c 0.22 db vs. supply 4.75 v to 5.25 v 0.17 db output 1 db compression point 20.6 dbm output third-order intercept f = 1 mhz, output power (p out ) = 0 dbm per tone 39.0 dbm noise figure 2.5 db frequency = 380 mhz gain 19.2 19.7 20.5 db vs. frequency 50 mhz 0.15 db vs. temperature ?40c t a +85c 0.24 db vs. supply 4.75 v to 5.25 v 0.15 db output 1 db compression point 20.4 dbm output third-order intercept f = 1 mhz, output power (p out ) = 0 dbm per tone 36.0 dbm noise figure 3.0 db power interface pin rfout supply voltage 4.75 5 5.25 v supply current 100 110 ma vs. temperature ?40c t a +85c 15 ma power dissipation vpos = 5 v 0.5 w
adl5531 rev. 0 | page 4 of 12 typical scattering parameters vpos = 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. s11 s21 s12 s22 frequency (mhz) magnitude (db) angle () magnitude (db) angle () magnitude (db) angle () magnitude (db) angle () 20 ?19.9933 ?132.614 21.99753 173.7349 ?24.2574 4.854191 ?19.1444 ?46.7161 50 ?19.6622 ?151.093 21.20511 170.3258 ?23.4894 5.603544 ?21.4752 ?89.9497 100 ?17.9244 ?166.031 20.83152 167.5595 ?23.22 6.119636 ?23.0386 ?115.741 150 ?18.4041 ?177.116 20.67117 164.1871 ?23.0914 6.631844 ?23.335 ?119.722 200 ?18.6386 +179.6269 20.56097 160.4721 ?22.9921 7.784913 ?22.8555 ?115.855 250 ?19.2303 +175.3384 20.45422 156.5272 ?22.9219 8.763143 ?21.6619 ?111.307 300 ?19.4456 +175.0622 20.34563 152.4398 ?22.8475 9.908631 ?20.2707 ?106.681 350 ?20.1783 +173.422 20.21365 148.3008 ?22.7662 11.21706 ?18.7007 ?104.369 400 ?20.2409 +174.1593 20.07116 144.2311 ?22.665 12.36953 ?17.1242 ?103.565 450 ?20.7266 +175.6233 19.90932 140.0789 ?22.5569 13.57857 ?15.726 ?103.863 500 ?20.6064 +175.853 19.72779 135.9952 ?22.4519 14.73385 ?14.41 ?105.079
adl5531 rev. 0 | page 5 of 12 absolute maximum ratings table 3. parameter rating supply voltage on rfout 5.5 v input power on rfin 10 dbm internal power dissipation (paddle soldered) 600 mw ja (junction to air) 103c/w maximum junction temperature 150c operating temperature range ?40c to +85c storage temperature range ?65c to +150c esd ratinghuman body model 2 kv 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. esd caution
adl5531 rev. 0 | page 6 of 12 pin configuration and fu nction descriptions 5clin 8nc nc nc = no connect 4 6nc rfin 2 7 rfout nc 3 1 nc pin 1 indicator top view (not to scale) adl5531 06833-002 figure 2. pin configuration table 4. pin function descriptions pin no. mnemonic description 1, 3, 4, 6, 8 nc no connect 2 rfin rf input. requires a 10 nf dc blocking capacitor. 5 clin a 1 nf capacitor connected between pin 5 and ground provides decoupling for the on-board linearizer. 7 rfout rf output and bias. dc bias is provided to this pin through a 470 nh inductor (coilcraft 1008cs-471xjlc or equivalent). rf path requires a 10 nf dc blocking capacitor. exposed paddle gnd. solder this paddl e to a low impedance ground plane.
adl5531 rev. 0 | page 7 of 12 typical performance characteristics 06833-003 frequency (mhz) nf, gain (db) p1db, oip3 (dbm) 0 2 4 6 8 10 12 14 16 18 20 22 0 50 100 150 200 250 300 350 400 450 500 12 15 18 21 24 27 30 33 36 39 42 45 gain nf oip3 p1db figure 3. noise figure (nf), gain, p1db, and oip3 vs. frequency 19.0 19.2 19.4 19.6 19.8 20.0 20.2 20.4 20.6 20.8 21.0 21.2 21.4 0 50 100 150 200 250 300 350 400 450 500 0 6833-004 frequency (mhz) gain (db) +25c ?40c +85c figure 4. gain vs. frequency and temperature ?40 ?35 ?30 ?25 ?20 ?15 ?10 ?5 0 0 50 100 150 200 250 300 350 400 450 500 06833-005 frequency (mhz) s-parameters (db) s12 (db) s11 (db) s22 (db) figure 5. input return loss, output return loss, and reverse isolation vs. frequency 19.0 19.5 20.0 20.5 21.0 21.5 22.0 22.5 23.0 0 50 100 150 200 250 300 350 400 450 500 26 28 30 32 34 36 38 40 42 06833-006 frequency (mhz) p1db (dbm) oip3 (dbm) +25c ?40c +85c +25c +85c ?40c figure 6. oip3 and p1db vs. frequency and temperature 24 26 28 30 32 34 36 38 40 42 ?8?6?4?202468101214161820 06833-007 p out per tone (dbm) oip3 (dbm) 70mhz 20mhz 500mhz 380mhz 190mhz figure 7. oip3 vs. output power (p out ) and frequency 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 50 100 150 200 250 300 350 400 450 500 frequency (mhz) 0 6833-008 noise figure (db) +25c ?40c +85c figure 8. noise figure vs. frequency and temperature
adl5531 rev. 0 | page 8 of 12 0 5 10 15 20 25 30 35 40 45 37.5 37.9 38.3 38.7 39.1 39.5 39.9 40.3 oip3 (dbm) 06833-009 percentage (%) figure 9. oip3 distribution at 190 mhz 0 10 20 30 40 50 60 20.0 20.2 20.4 20.6 20.8 21.0 21.2 21.4 p1db (dbm) 06833-010 percentage (%) figure 10. p1db distribution at 190 mhz 0 5 10 15 20 25 30 35 40 45 50 19.7 19.9 20.1 20.3 20.5 20.7 20.9 19.8 20.0 20.2 20.4 20.6 20.8 21.0 gain (db) 06833-011 percentage (%) figure 11. gain distribution at 190 mhz 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 50 100 150 200 250 300 350 400 450 500 frequency (mhz) 06833-012 noise figure (db) figure 12. noise figure vs. frequency at 25c, multiple devices shown 50 60 70 80 90 100 110 120 130 140 150 ?40 ?30 ?20 ?10 0 10 20 30 40 50 60 70 80 90 temperature (c) 0 6833-013 supply current (ma) 5v 4.75v 5.25v figure 13. supply current vs. supply voltage and temperature
adl5531 rev. 0 | page 9 of 12 basic connections the basic connections for operating the adl5531 are shown in figure 15 . the input and output are ac-coupled with 10 nf (0402) capacitors. dc bias is provided to the amplifier via an inductor (coilcraft 1008cs-471xjlc or equivalent) connected to the rfout pin. the bias voltage should be decoupled using 10 nf and 1 f capacitors. soldering information and recommended pcb land pattern figure 14 shows the recommended land pattern for adl5531. to minimize thermal impedance, the exposed paddle on the package underside is soldered down to a ground plane. if multiple ground layers exist, they are stitched together using vias (a minimum of five vias is recommended). pin 1, pin 3, pin 4, pin 6 and pin 8 can be left unconnected or can be connected to ground. connecting these pins to ground slightly enhances thermal impedance. for more information on land pattern design and layout, refer to application note an-772, a design and manufacturing guide for the lead frame chip scale package (lfcsp) . 06833-015 1.53mm 0.5m m 1.78mm 1.85mm 2.03mm 4 5 8 0.71mm 1 figure 14. recommended land pattern 5 clin 8 nc nc nc = no connect rfin rfout l1 470nh 4 6 nc rfin 2 7 rfout nc 3 nc adl5531 06833-014 1 c1 10nf c3 1nf c5 10nf c2 10nf c6 1f v pos (testloop red) gnd (testloop black) w1 figure 15. basic connections
adl5531 rev. 0 | page 10 of 12 evaluation board figure 18 shows the schematic for the adl5531 evaluation board. the board is powered by a single supply of 5 v. the components used on the board are listed in table 5 . power can be applied to the board through clip-on leads or through jumper w1. note that c4, c7, c8, l3, l4, l5, r1, and r2 have no function. 06833-016 figure 16. evaluation board layout (bottom) 06833-017 figure 17. evaluation board layout (top) 5 clin 8 nc nc nc = no connect z1 rfin rfout l1 470nh l5 open l4 open 4 6 nc rfin 2 7 rfout nc 3 nc adl5531 06833-018 1 c1 10nf c3 1nf c7 open r2 open c5 10nf c2 10nf c4 open c8 open c6 1f l3 open l2 0 ? vpos (testloop red) gnd (testloop black) w1 r1 open figure 18. evaluation board schematic table 5. evaluation board configuration options component function default value z1 dut adl5531 c1, c2 ac coupling capacitors 10 nf, 0402 c3 linearizer capacitor 1 nf, 0603 c5 power supply decoupling capacitor 10 nf, 0603 c6 power supply decoupling capacitor 1 f, 0603 c4, c7, c8 open r1, r2 open l1 dc bias inductor 470 nh, 1008 (coilcraft 1008cs-471xjlc or equivalent) l2 0 , 0402 l3, l4, l5 open vpos, gnd clip-on terminals for power supply vpos, gnd w1 2-pin jumper for connection of ground and supply via cable w1 rfin, rfout 50 sma female connectors rfin, rfout
adl5531 rev. 0 | page 11 of 12 outline dimensions 0 61507-b 1 exposed pa d (bottom view) 0.50 bsc pin 1 indicator 0.50 0.40 0.30 top view 12 max 0.70 max 0.65 typ 0.90 max 0.85 nom 0.05 max 0.01 nom 0.20 ref 1.89 1.74 1.59 4 1.60 1.45 1.30 3.25 3.00 sq 2.75 2.95 2.75 sq 2.55 5 8 pin 1 indicator seating plane 0.30 0.23 0.18 0.60 max 0.60 max figure 19. 8-lead lead frame chip scale package [lfcsp_vd] 3 mm 3 mm body, very thin, dual lead cp-8-2 dimensions shown in millimeters ordering guide model temperature range package description package option branding adl5531acpz-r7 1 ?40c to +85c 8-lead lfcsp_vd, tape and reel cp-8-2 q16 adl5531-evalz 1 evaluation board 1 z = rohs compliant part.
adl5531 rev. 0 | page 12 of 12 notes ?2007 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d06833-0-8/07(0)

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