plerowTM ALN1945T2 Internally Matched LNA Module Features Description · 32 dB Gain at 1945 MHz · 17 dBm P1dB · 31 dBm Output IP3 · 1.0 dB Noise Figure · Operating at Single 5 V Supply · 80 mA Current Consumption The plerowTM 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 communication 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. Specifications (in Production) 2-stage Single Type Typ. @ T = 25C, Vs = 5 V, Freq. =1945 MHz, Zo.sys = 50 ohm Parameter Unit Frequency Range Specifications Min Typ Max MHz 1920 Gain dB 31 Gain Flatness dB 0.2 0.3 Noise Figure dB 1.0 1.05 Output IP3 (1) dBm S11 / S22 (2) 1970 30 dBm Tel: (82) 42-528-7223 Fax: (82) 42-528-7222 -18 / -10 16 17 sec - Supply Current mA 80 Supply Voltage V 5 Impedance 50 Switching Time (3) Website: www.asb.co.kr E-mail: [email protected] 31 dB Output P1dB More Information 32 90 Max. RF Input Power dBm C.W 29 ~ 31 (before fail) Package Type & Size mm Surface Mount Type, 10Wx10Lx3.8H Operating temperature is -40C to +85C. 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 voltage from 0 V to VS. Outline Drawing (Unit: mm) Pin Number Function plerow 2 RF In ALN1945T2 5 RF Out ASB Inc. 6 +Vcc Others Ground (Top View) (Bottom View) Note: 1. The number and size of ground via holes in a circuit board is critical for thermal RF grounding considerations. 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 drawing at the left side. Solder Stencil Area (Side View) Ø 0.4 plated thru holes to ground plane (Recommended Footprint) 1/3 www.asb.co.kr August 2017 plerowTM ALN1945T2 Internally Matched LNA Module S-parameters Typical Performance (Measured) 1920~1970 MHz +5 V Stability Factor (K) Noise Figure OIP3 2/3 P1dB www.asb.co.kr August 2017 plerowTM ALN1945T2 Internally Matched LNA Module Application Circuit V DC + - Tantal Capacitor IN OUT ALN C1 C2 1) The tantal 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. 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 frequency. Recommended Soldering Reflow Process Evaluation Board Layout +Vcc 20~40 sec 260C Ramp-up (3˚C/sec) Ramp-down (6C/sec) IN OUT 200C 150C 60~180 sec Size 25 x 25mm (for ALN-AT, BT, T Series – 10x10mm) Copyright 2007-2017 ASB Inc. All rights reserved. Datasheet subject to change without notice. ASB assumes no responsibility 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. 3/3 www.asb.co.kr August 2017