1 / 3 www.asb.co.kr a u g u s t 2 0 1 7 p lerow tm aln1748t2 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 wir eless (cdma, gsm, pcs, phs, wcdma, dmb, wlan, wibro, wimax), 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 ensure 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 1710 1785 gain db 22 23 gain flatness db ? 0.3 ? 0.4 noise figure db 0.75 0.80 output ip3 (1) dbm 36 37 s11/s22 (2) db - 19/ - 19 output p1db dbm 19 20 s witching time (3) ? sec - supply current ma 120 140 supply voltage v 5 impedance ? 50 package type & size mm surface mount type, 10wx10lx3.8h operating temperature is - 40 ? c to +85 ? c. 1) oip3 is measured wi th two tones at an output power of 4 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 f rom 0 v to v s . pin number function 2 rf in 5 rf out 6 v s other s ground ou t line drawing (unit: mm) s 21 = 23.30 db@1710 mhz = 22.70 db@1785 mhz nf of 0.75 db over frequency unconditionally stable single 5v supply high oip3@low current note: 1. the num ber 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. (recommended footprint) aln1748t2 asb inc. (top view) (bottom view) ? 0.4 plated thru holes to ground plane plerow (side view) solder stencil area website: www.asb.co.kr e - mail: sales@asb.co.kr tel: (82) 42 - 528 - 722 3 f ax : (82) 42 - 528 - 7222 more info rm a tion 2 - stage single type specifications (in pr o duction) typ.@t = 25 ? c, v s = 5 v, freq. = 1747.5 mhz, z o.sys = 50 ohms feature s description
2 / 3 www.asb.co.kr a u g u s t 2 0 1 7 p lerow tm aln1748t2 internally matched lna module s - param e ters noise figure oip3 p1db 1710~1785 mhz +5 v typical performance (measured) s - parameters & k fa c tor
3 / 3 www.asb.co.kr a u g u s t 2 0 1 7 p lerow tm aln1748t2 internally matched lna module 1) the tantal or mlc (multi layer ceramic) capacitor is optional and for bypassing the ac noise introduced from the dc supply. the capacitance value may be determined by customer s dc supply status . the c a- pacitor should be placed as close as possible to v s pin and be connected directly to the ground plane for the best electrical perform ance . 2) 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 inclu d- ed inside the aln module. therefore, c1 & c2 c apacitors 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. copyright ? 201 0 - 2017 asb inc. all rights reserved. datasheet subject to change without notice. asb assumes no re- sponsibility for any errors which may appear in this datasheet. no part of the datasheet may be copied or reproduced in any form or by any means without the prior written consent of asb. application circuit recommended solderi ng reflow process 20~40 sec 260 ? c 200 ? c 150 ? c 60~180 sec ramp - up (3 ? c/sec) ramp - down (6 ? c/sec) + - aln out in c1 c2 v s tantal or mlc (multi layer c e ramic) c a pacitor in out vs size 25x25 mm (for aln - t series C 10x10 mm) evaluation board layout
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