plerowTM ALN0882AT Internally Matched LNA Module Features Description · S21 = 20.2 dB @ 873 MHz = 19.8 dB @ 892 MHz · NF of 0.8 dB over Frequency · Unconditionally Stable · Single 3.3V 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 = 3.3 V, Freq. = 882.5 MHz, Zo.sys = 50 ohm Parameter Unit Frequency Range Min MHz 873 Gain dB 19 Gain Flatness dB Noise Figure Output IP3 S11 / S22 Typ dBm (2) Max 892 20 dB (1) 1-stage Single Type Specifications 31 ± 0.2 ± 0.3 0.8 0.85 More Information Website: www.asb.co.kr E-mail: [email protected] 32 dB Tel: (82) 42-528-7223 Fax: (82) 42-528-7222 -18 / -12 Output P1dB dBm 15 16 Switching Time µsec - Supply Current mA 75 Supply Voltage V 3.3 Impedance Ω 50 ASB Inc., 4th Fl. Venture Town Bldg., 367-17 Goijeong-Dong, Seo-Gu, Daejon 302-716, Korea 85 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 7 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) plerow ALN0882AT Pin Number Function 2 RF In 5 RF Out ASB Inc. 6 +Vcc (Top View) Others Ground (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) Ø0.4 plated thru holes to ground plane (Recommended Footprint) 1/3 www.asb.co.kr November 2008 plerowTM ALN0882AT Internally Matched LNA Module S-parameters 22 10 21 5 S21 S11, S22, S12 [dB] 0 873~892 19 -5 -10 18 S22 17 -15 16 -20 S11 -25 +3.3 V 20 15 S12 -30 14 13 -35 -40 870 S21 [dB] Typical Performance (Measured) 12 872 874 876 878 880 882 884 886 888 890 892 894 Frequency [MHz] S-parameters & K Factor Noise Figure 50 12 40 11 10 S21 20 9 10 8 0 7 S22 -10 6 -20 S11 5 -30 S12 4 -40 3 -50 2 -60 1 -70 0 500 1000 1500 2000 2500 3000 Stability Factor K S-parameter [dB] 30 0 3500 Frequency [MHz] OIP3 2/3 P1dB www.asb.co.kr November 2008 plerowTM ALN0882AT 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) IN 200°C OUT 150°C 60~180 sec Size 25 x 25mm (for ALN-AT, BT, T Series – 10x10mm) 3/3 www.asb.co.kr November 2008