1 / 4 www.asb.co.kr july 2009 p lerow tm aln2590t2 internally matched lna module the plerow 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, w imax), gps, satellite commun 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 ensu re its unconditionally stable 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 2490 2690 gain db 22 23 gain flatness db ? 0.3 ? 0.4 noise figure db 0.80 0.85 output ip3 (1) dbm 31 32 s11 / s22 (2) db - 18 / - 15 output p1db dbm 14 15 switching time (3) ? sec 0.35 supply current ma 80 100 supply voltage v 5 impedance ? 50 max. rf input power dbm c.w 29 ~ 31 (before fail) package type & size mm surface mount type, 10wx10lx3.8h operating temperature is - 40 ? c to +85 ? c. 1) oip3 is measured with two tones at an output power of 3 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 voltag e from 0 v to v s . pin number function 2 rf in 5 rf out 6 +vcc other s ground ou t line drawing (unit: mm) feature s s 21 = 23.3 db @ 2490 mhz = 22.7 db @ 2690 mhz nf of 0.80 db over fr e quency unconditionally stable single 5v supply high oip3 @ low current 0.35 ? sec switching time note: 1. the number and size of ground via holes in a circuit board is criti cal 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. description (recommended footprint) aln2590t2 asb inc. (top view) (bottom view) ? 0.4 plated thru holes to ground plane plerow (side view) solder stencil area 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. = 2590 mhz, z o.sys = 50 ohm
2 / 4 www.asb.co.kr july 2009 p lerow tm aln2590t2 internally matched lna module s - param e ters noise figure oip3 p1db 2490~2690 mhz +5 v typic al performance (measured) s - parameters & k fa c tor
3 / 4 www.asb.co.kr july 2009 p lerow tm aln2590t2 internally matched lna module switching time ?
4 / 4 www.asb.co.kr july 2009 p lerow tm aln2590t2 internally matched lna module 1) the tantal capaci tor is optional and for bypassing the ac 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 o nly 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 - at, bt, t series C 10x10mm)
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