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mga-683p8 low noise and high linearity active bias low noise amplifi er data sheet attention: observe precautions for handling electrostatic sensitive devices. esd machine model = 90 v (class a) esd human body model = 500 v (class 1b) refer to avago application note a004r: electrostatic discharge, damage and control. description avago technologies mga-683p8 is an economical, easy- to-use gaas mmic low noise amplifi er (lna). the lna has low noise and high linearity achieved through the use of avago technologies proprietary 0.25 ? m gaas enhancement-mode phemt process. it is housed in a miniature 2.0 x 2.0 x 0.75 mm 3 8-pin quad-flat-non-lead (qfn) package. it is designed for optimum use from 450 mhz up to 2 ghz. the compact footprint and low profi le coupled with low noise, high gain and high linearity make the mga-683p8 an ideal choice as a low noise amplifi er for cellular infrastructure for gsm and cdma. for optimum performance at higher frequency from 1.5 ghz to 4 ghz, the mga-684p8 is recommended. both mga-683p8 and mga-684p8 share the same package and pinout. pin confi guration and package marking 2 .0 x 2.0 x 0.75 mm 3 8-lead qfn features ?? low noise figure ?? high linearity performance ?? gaas e-phemt technology [1] ?? low cost small package size: 2.0 x 2.0 x 0.75 mm 3 ?? excellent uniformity in product specifi cations ?? tape-and-reel packaging option available specifi cations 900 mhz; 5 v, 40 ma ?? 17.8 db gain ?? 0.56 db noise figure ?? more than 20 db input return loss ?? 32.8 dbm output ip3 ?? 21.5 dbm output power at 1db gain compression applications ?? low noise amplifi er for cellular infrastructure for gsm and cdma. ?? other low noise application. ?? repeater, metrocell/picocell application. simplifi ed schematic pin 1 C vbias pin 5 C not used pin 2 C rfinput pin 6 C not used pin 3 C not used pin 7 C rfoutput/vdd pin 4 C not used pin 8 C not used centre tab - ground top view bottom view [2] [1] [3] [4] [7] [8] [6] [5] 83x [2] [1] [3] [4] [7] [8] [6] [5] note: ? the schematic is shown with the assumption that similar pcb is used for both mga-683p8 and mga-684p8. ? detail of the components needed for this product is shown in table 1. ? enhancement mode technology employs positive gate voltage, thereby eliminating the need of negative gate voltage associated with conventional depletion mode devices. ? good rf practice requires all unused pins to be earthed. rbias c6 c3 c2 r2 l2 r1 l1 c1 c4 l3 rfin rfout vdd [1] [2] [3] [4] [8] [7] [6] [5] c5 note: package marking provides orientation and identifi cation 83 = device code x = month code
2 absolute maximum rating [1] t a =25 c symbol parameter units absolute maximum v dd device voltage, rf output to ground v 5.5 idd drain current ma 90 p max cw rf input power (v dd = 5.0 v, i d = 54 ma) dbm +20 p diss total power dissipation [2] w 0.495 t j junction temperature c 150 t stg storage temperature c -65 to 150 thermal resistance thermal resistance [3] (v dd = 5.0 v, i dd = 40 ma) ? jc = 72c/w notes: 1. operation of this device in excess of any of these limits may cause permanent damage. 2. thermal resistance measured using infra-red measurement technique. 3. power dissipation with unit turned on. board temperature t b is 25 c. derate at 13.89 mw/c for t b > 114 c. electrical specifi cations [1, 4] rf performance at t a = 25 c, v dd = 5 v, r bias = 12 kohm, 900 mhz, measured on demo board in figure 5 with component list in table 1 for 900 mhz matching. symbol parameter and test condition units min. typ. max. i dd drain current ma 25 40.3 53 gain gain db 16.3 17.8 19.3 oip3 [2] output third order intercept point dbm 28.5 32.8 nf [3] noise figure db 0.56 0.8 op1db output power at 1db gain compression dbm 21.5 irl input return loss, 50 ? source db 24 orl output return loss, 50 ? load db 13 rev isol reverse isolation db 21 notes: 1. measurements at 900 mhz obtained using demo board described in figure 1. 2. oip3 test condition: f rf1 = 900 mhz, f rf2 = 901 mhz with input power of -10 dbm per tone. 3. for nf data, board losses of the input have not been de-embedded. 4. use proper bias, heatsink and derating to ensure maximum channel temperature is not exceeded. see absolute maximum ratings a nd application note for more details.
3 usl 0.5 0.6 0.7 0.8 lsl 26 27 28 29 30 31 32 33 34 35 36 37 lsl usl 16 17 18 19 noise figure max : 0.8 mean : 0.56 oip3 min : 28.5 mean : 32.8 gain max : 19.3 min : 16.3 mean : 17.8 lsl usl 30 40 50 lsl usl id max : 53 min : 25 mean : 40.3 product consistency distribution charts figure 1. idd @ 900 mhz, mean = 40.3 figur e 2. noise figure @ 900 mhz, mean = 0.56 figure 3. oip3 @ 900 mhz, mean = 32.8 figure 4. gain @ 900 mhz, mean = 17.8 notes: 1. distribution data samples are 500 samples taken from 3 diff erent wafers. future wafers allocated to this product may have nominal values anywhere between the upper and lower limits. 2. circuit losses have not been de-embedded from the actual measurements.
4 demo board layout figure 5. demo board layout diagram demo board schematic figure 6. demo board schematic diagram table 1. component list for 900 mhz matching part size value detail part number c1 0402 8.2 pf murata grm15 c2 0402 100 pf murata grm15 l1 0402 15 nh toko ll1005 l2 0402 33 nh toko ll1005 l3 0402 18 nh toko ll1005 c4 0402 27 pf murata grm15 c3, c6 0402 4.7 ? f murata grm15 rbias 0402 12 kohm koa rk73 r1 0402 0 ohm koa rk73 r2 0402 9.1 ohm koa rk73 notes: c2 is a blocking capacitor l2 output match for oip3 l1, c1 and l3 are used for irl matching. c3, c4 and c6 are bypass capacitors c5 is not use for this product r2 is stabilizing resistor rbias is the biasing resistor C recommended pcb material is 10 mils rogers ro4350. C suggested component values may vary according to layout and pcb material. notes: ? the schematic is shown with the assumption that similar pcb is used for both mga-683p8 and mga-68p8. ? detail of the components needed for this product is shown in table 1. avago technologies rapala w mga-68xp8 vbias gnd vdd gnd c1 l1 c2 l2 c5 c6 r1 r2 c3 c4 rbias jul 10 l3 rbias 1 2 k c6 4 .7uf c3 4 .7uf c2 1 00p f r2 9.1 l 2 33 nh r 1 0 l1 1 5 nh c 1 8 . 2p f c4 2 7 p f l 3 1 8 nh r f i n r f o ut v dd [1] [ 2 ] [ 3 ] [ 4 ] [ 8 ] [7] [ 6 ] [ 5 ] c5 nu
5 mga-683p8 typical performance in demoboard rf performance at t a = 25 c, vdd = 5 v, measured on demo board in figure 5 with component list in table1 for 900 mhz matching, unless otherwise stated. figure 7. nf vs frequency vs temperature figure 8. gain vs frequency vs temperature figure 9. oip3 vs frequency vs temperature figure 10. op1db vs frequency vs temperature 0 . 2 0 . 4 0 . 6 0 . 8 1 1 . 2 0 500 1000 1500 2000 frequency (mhz) n f (db) 26 28 30 32 34 36 38 0 500 1000 1500 2000 frequency (mhz) oip3 (dbm) 0 5 10 15 20 25 0 500 1000 1500 2000 frequency (mhz) gain (db) 1 7. 5 18 . 5 1 9. 5 20 . 5 21 . 5 22 . 5 23 . 5 0 500 1000 1500 2000 frequency (mhz) p1db (dbm) -40 c 25 c 85 c -40 c 25 c 85 c -40 c 25 c 85 c -40 c 25 c 85 c
6 figure 11. input return loss, output return loss, gain, reverse isolation vs frequency figure 12. k-factor vs frequency vs temperature figure 15. idd vs rbias - 40 - 30 - 20 -1 0 0 1 0 20 30 0 1 000 2000 3000 4000 5000 6000 f req u e n cy ( m hz) i r l, or l, gai n, re v i so l ( db ) 0 0 . 5 1 1. 5 2 2 . 5 3 3 . 5 4 4 . 5 5 02468 1 0 1 2 1 4 1 6 1 820 f req u e n cy ( g hz) k-f ac t or re v i so l i r l or l gai n - 40 c 25 c 85 c 20 30 40 50 60 7 0 80 6 7 8 91 0 11 1 2 1 3 1 4 1 5 1 6 17 1 8 rbias (k o h m ) i dd ( ma ) - 40 35 - 30 - 25 - 20 -1 5 -1 0 - 5 0 0 500 1 000 1 500 2000 i r l ( db ) f req u e n cy ( m hz) - 40c 25c 85c - 20 -1 5 -1 0 - 5 0 0 500 1 000 1 500 2000 or l ( db ) f req u e n cy ( m hz) - 40c 25c 85c figure 13. input return loss vs frequency vs temperature f igure 14. output return loss vs frequency vs temperature
7 mga-683p8 typical scattering parameters, vdd = 5 v freq ghz s 11 s 21 s 12 s 22 mag. ang. db mag. ang. mag. ang. mag. ang. 0.10 0.78 -39.85 28.64 27.04 149.39 0.02 61.61 0.33 -37.71 0.50 0.28 -91.85 21.88 12.41 109.78 0.05 57.18 0.09 -4.96 0.90 0.18 -116.24 17.98 7.92 90.98 0.08 59.30 0.14 -15.82 1.00 0.15 -125.00 17.18 7.22 87.35 0.09 59.00 0.14 -19.87 1.50 0.10 -142.26 14.00 5.01 71.80 0.12 55.32 0.20 -41.56 2.00 0.08 -158.00 11.67 3.83 58.64 0.16 49.50 0.20 -61.44 2.50 0.06 -177.30 9.81 3.09 46.91 0.19 42.91 0.21 -80.22 3.00 0.04 168.68 8.28 2.59 36.14 0.23 36.14 0.23 -95.46 4.00 0.00 -108.56 5.94 1.98 16.53 0.30 22.23 0.25 -119.00 5.00 0.03 -73.16 4.23 1.63 -1.82 0.36 7.81 0.25 -143.80 6.00 0.04 -151.00 2.90 1.40 -19.09 0.42 -6.77 0.25 -170.44 7.00 0.06 -158.00 1.80 1.23 -35.70 0.47 -21.90 0.26 166.00 8.00 0.12 -156.52 0.83 1.10 -51.10 0.52 -36.75 0.30 150.48 9.00 0.17 -162.00 0.01 1.00 -65.36 0.56 -51.21 0.34 138.44 10.00 0.20 -178.00 -0.60 0.93 -79.22 0.60 -66.02 0.35 124.40 11.00 0.21 155.00 -1.06 0.89 -93.53 0.64 -81.83 0.33 104.00 12.00 0.22 123.32 -1.55 0.84 -109.00 0.66 -98.70 0.34 78.63 13.00 0.26 103.28 -2.14 0.78 -123.00 0.66 -115.00 0.38 62.36 14.00 0.32 94.32 -2.66 0.74 -136.00 0.66 -130.00 0.42 59.90 15.00 0.39 84.02 -2.96 0.71 -147.00 0.67 -143.00 0.43 59.92 16.00 0.42 66.23 -3.10 0.70 -160.00 0.68 -158.00 0.40 49.93 17.00 0.43 44.22 -3.53 0.67 -175.88 0.66 -176.00 0.40 27.05 18.00 0.48 28.22 -4.50 0.60 169.00 0.60 167.00 0.48 10.42 19.00 0.57 16.40 -5.59 0.53 156.04 0.53 153.00 0.56 7.77 20.00 0.61 5.40 -6.14 0.49 145.00 0.50 140.00 0.60 6.82 20.0 0.62 5.97 -6.14 0.49 145.85 0.50 140.18 0.60 6.77 [2] [1] [3] [4] [ 7 ] [8] [6] [5] bias rfinput re f erence plane rfoutput re f erence plane figure 16. typical noise parameters, vdd=5v freq fmin opt opt rn/50 ghz db mag. ang. 0.5 0.46 0.207 -35.1 0.054 0.7 0.379 0.185 -14.7 0.06 0.75 0.366 0.18 -10.2 0.055 0.8 0.356 0.175 -5 0.0494 0.9 0.343 0.164 -4.2 0.0432 1.7 0.5 0.079 88.9 0.0594 1.9 0.55 0.059 125.3 0.0466 notes: 1. the fmin values are based on noise fi gure measurements at 100 diff erent impedances using focus source pull test system. from these measurements a true fmin is calculated. 2. scattering and noise parameters are measured on coplanar waveguide made on 0.010 inch thick roger 4350. the input reference plane is at the end of the rfinput pin and the output reference plane is at the end of the rfoutput pin as shown in figure 16.
8 slp4x4 package notes: 1. all dimensions are in millimeters. 2. dimensions are inclusive of plating. 3. dimensions are exclusive of mold ash and metal burr. part number ordering information part number no. of devices container MGA-683P8-BLKG 100 antistatic bag mga-683p8-tr1g 3000 7 inch reel p in 1 d o t b y mar kin g 2 . 00 0 . 050 2 . 00 0 . 050 83 x 0 . 203 re f. 0 . 000 C 0 . 05 0 .7 5 0 . 05 0 . 60 0 . 050 ex p . d ap 0 . 35 0 . 050 0 . 25 0 . 050 1. 20 0 . 050 ex p . d ap 1. 50 re f. 0 . 50 bsc p in #1 identifi ca ti o n r0 .1 00 t op view side view bo tt om view
9 pcb land pattern and stencil design pcb land pattern stencil design combines pcb & stencil design all dimension are in millimeters 0 . 50?6x 0 . 25?8x r0 . 15?4x 0 . 45?8x 0 . 30?3x 0 . 50?2x 1 . 20 1 . 50 0 . 50 0 . 05 (all s m gaps) 2 . 20 1 .7 5 0 . 00 0 . 80 0 . 50?6x 0 . 22?8x 0 . 40?8x 0 . 1 7 0?2x 0 . 48?2x 0 . 21 1 . 50 1 .7 2 2 . 16 1 .7 5 0 . 56?3x 0 . 50?6x r0 . 15?4x 0 . 1 7 ?2x 0 . 50 1 . 50 0 . 21 1 .7 5 0 . 56?3x metal sur f ace s oldermask open
10 tape dimensions 10 max ++ 10 max a o b o t 1 t t k o d 1 f e p 2 p o p d w d e s criptio ns ymbol s ize (mm) s ize (i n che s ) le n gth wi d th d epth pitch bottom hole d iameter a 0 b 0 k 0 p d 1 2 . 30 0 . 05 2 . 30 0 . 05 1 . 00 0 . 05 4 . 00 0 . 10 1 . 00 + 0 . 25 0 . 0 9 1 0 . 004 0 . 0 9 1 0 . 004 0 . 03 9 0 . 002 0 . 15 7 0 . 004 0 . 03 9 + 0 . 002 cavity d iameter pitch po s itio n d p 0 e 1 . 50 0 . 10 4 . 00 0 . 10 1 .7 5 0 . 10 0 . 060 0 . 004 0 . 15 7 0 . 004 0 . 06 9 0 . 004 perforatio n wi d th thick n e ss w t 1 8 . 00 0 . 30 8 . 00 0 . 10 0 . 254 0 . 02 0 . 315 0 . 012 0 . 315 0 . 004 0 . 010 0 . 0008 carrier tape cavity to perforatio n (wi d th d irectio n ) cavity to perforatio n (le n gth d irectio n ) f p 2 3 . 50 0 . 05 2 . 00 0 . 05 0 . 138 0 . 002 0 . 0 79 0 . 002 d i s ta n ce wi d th tape thick n e ss c t t 5 . 4 0 . 10 0 . 062 0 . 001 0 . 205 0 . 004 0 . 0025 0 . 0004 cover tape device orientation us er fee d d irectio n cover tape carrier tape reel 8 mm 4 mm 83x 83x 83x 83x
for product information and a complete list of distributors, please go to our web site: www.avagotech.com avago, avago technologies, and the a logo are trademarks of avago technologies in the united states and other countries. data subject to change. copyright ? 2005-2012 avago technologies. all rights reserved. av02-2945en - may 23, 2012 reel dimensions C 7 inch p s 6 p s 6 back view ?1 7 8 . 00 . 5 ?55 . 00 . 5 6 . 25mm embo ss e d letter s letteri n g thick n e ss : 1 . 6mm s ee d etail "x" s lot hole "b" s lot hole(2x) 180 apart . s lot hole "a": 3 . 00 . 5mm(1x) s lot hole "b": 2 . 50 . 5mm(1x) ?13 . 0 65 45 r10 . 65 45 r5 . 2 embo ss e d rib s rai s e d : 0 . 25mm , wi d th: 1 . 25mm 18 . 0* max . ?51 . 20 . 3 ?1 7 8 . 00 . 5 recycle logo fro n t view 120 1 . 5 mi n. ?20 . 2 mi n. -0 . 2 +0 . 5 d etail "x" -0 . 0 +1 . 5* 12 . 4 d etail "y" ( s lot hole) 3 . 5 1 . 0 s ee d etail "y" fro n tback fro n tback s lot hole "a" ?1 7 8 . 00 . 5

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