plerowTM ALN2355 Internally Matched LNA Module Features Description · S21 = 35.5 dB @ 2300 MHz = 34.5 dB @ 2400 MHz · NF of 0.70 dB over Frequency · Unconditionally Stable · Single 5V Supply · High OIP3 @ Low Current 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) Typ. @ T = 25°C, Vs = 5 V, Freq. = 2350 MHz, Zo.sys = 50 ohm Parameter Unit Frequency Range Min MHz 2300 Gain dB 34 Gain Flatness dB Noise Figure Output IP3 S11 / S22 Typ dBm (2) 35 35 ± 0.5 ± 0.7 0.70 0.75 dBm (3) Website: www.asb.co.kr E-mail: [email protected] Tel: (82) 42-528-7223 Fax: (82) 42-528-7222 -18 / -14 20 21 µsec - Supply Current mA 140 Supply Voltage V 5 Impedance Ω 50 Switching Time More Information 37 dB Output P1dB Max 2400 dB (1) 2-stage Single Type Specifications ASB Inc., 4th Fl. Venture Town Bldg., 367-17 Goijeong-Dong, Seo-Gu, Daejon 302-716, Korea 160 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 with 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 from 0 V to Vs. Outline Drawing (Unit: mm) Pin Number plerow ALN2355 ASB Inc. (Top View) (Bottom View) Function 3 RF In 8 RF Out 10 +Vcc Others Ground 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) Ø0.4 plated thru holes to ground plane (Recommended Footprint) 1/3 www.asb.co.kr February 2009 plerowTM ALN2355 Internally Matched LNA Module S-parameters Typical Performance (Measured) 2300~2400 +5 V S-parameters & K Factor Noise Figure OIP3 2/3 P1dB www.asb.co.kr February 2009 plerowTM ALN2355 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 260°C Ramp-up (3˚C/sec) Ramp-down (6°C/sec) OUT IN 200°C 150°C 60~180 sec Size 25 x 25mm (for ALN Series – 13x13mm) 3/3 www.asb.co.kr February 2009