1 / 3 www.asb.co.kr november 2008 p lerow tm aln1280 internally matched lna module the pler ow tm aln - series is the compactly designed surface - mount module for the use of the lna with or without the following gain blocks in the infrastructure equipment of the mobile wireless (cdma, gsm, pcs, phs, wcdma, dmb, wlan, wibro, wimax), gps, satellite com mun i- cation terminals , catv and so on. it has an exceptional performance of low noise figure, high gain, high oip3, and low bias current. the stability factor is always kept more than unity over the application band in order to ensure its unconditionally st able implementation to the application system environment. the surface - mount module package including the completed matching circuit and other components necessary just in case allows very simple and convenient implementation onto the system board in mass production level. parameter unit specifications min typ max frequency range mhz 1270 1290 gain db 31 32 gain flatness db ? 0.2 ? 0.3 noise figure db 0.7 0.75 output ip3 (1) dbm 37 38 s11 / s22 (2) db - 18 / - 10 output p1db dbm 17 1 8 switching time (3) ? sec - supply current ma 100 120 supply voltage v 5 impedance ? 50 max. rf input power dbm c.w 29 ~ 31 (before fail) package type & size mm surface mount type, 13wx13lx3.8h operating temperature is - 40 ? c to +85 ? c. 1) oip3 is measured wi th two tones at an output power of 10 dbm / tone separated by 1 mhz. 2) s11/s22 (max) is the worst value within the frequency band. 3) switching time means the time that takes for output power to get stabilized to its final level after switching dc voltage from 0 v to v s . pin number function 3 rf in 8 rf out 10 +vcc other s ground ou t line drawing (unit: mm) s 21 = 32.2 db @ 1270 mhz = 31.8 db @ 1290 mhz nf of 0.7 d b over frequency unconditionally stable single 5v supply high oip3 @ low current note: 1. the number and size of ground via holes in a circuit board is critical for thermal rf grounding consider a tions. 2. we recommend that the ground via holes be placed on the bottom of all ground pins for better rf and thermal performance, as shown in the dra w ing at the left side. aln1280 asb inc. (top view) (bottom view) solder stencil area ? 0.4 plated thru h oles to ground plane plerow (side view) (recommended footprint) c o u pl er website: www.asb.co.kr e - mail: sales@asb.co.kr tel: (82) 42 - 528 - 722 3 f ax : (82) 42 - 528 - 7222 more inform a tion c o u pl er c o u pl er c o u pl er c o u pl er 2 - stage single type specifications (in pr o duction) typ. @ t = 25 ? c, v s = 5 v, freq. =1280 mhz, z o.sys = 50 ohm feature s description
2 / 3 www.asb.co.kr november 2008 p lerow tm aln1280 internally matched lna module s - param e ters noise figure oip3 p1db 1270~1290 mhz +5 v stability fa c tor (k) typical performance (measured) 1270 1275 1280 1285 1290 -60 -50 -40 -30 -20 -10 0 10 20 26 27 28 29 30 31 32 33 34 s12 s11 s22 s21 s21 [db] s11, s22, s12 [db] frequency [mhz] 0 500 1000 1500 2000 2500 3000 3500 -60 -50 -40 -30 -20 -10 0 10 20 30 40 0 1 2 3 4 5 6 7 8 9 10 s12 s11 s22 s21 s - parameter [db] frequency [mhz] stability factor k
3 / 3 www.asb.co.kr november 2008 p lerow tm aln1280 internally matched lna module 1) the tantal capacitor is optional and for bypassing the a c noise introduced from the dc supply. the capacitance value may be dete r mined by customer s dc supply status. 2) so - called dc blocking capacitors are always necessarily placed at the input and output port for allowing only the rf signal to pass and blocking the dc component in the signal. the dc blocking capacitors are included inside the lna module. therefore, c1 & c2 capacitors may not be necessary, but can be added just in case that the customer wants. the value of c1 & c2 is determined by considering the application fr e quency. application circuit recommended soldering reflow process evaluation board layout + - aln out in c1 c2 tantal c a pacitor v dc 20~40 sec 260 ? c 200 ? c 150 ? c 60~180 sec ramp - up (3 ? c/sec) ramp - down (6 ? c/sec) size 25 x 25mm in out +vcc (for aln series C 13x13mm)
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