plerowTM ALN0837 Internally Matched LNA Module Features Description · S21 = 36.2 dB @ 828 MHz = 35.8 dB @ 847 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. = 837.5 MHz, Zo.sys =50 ohm Parameter Unit Frequency Range Min MHz 828 Gain dB 35 Gain Flatness dB Noise Figure Output IP3 S11 / S22 Typ dBm (2) 36 29 ± 0.2 ± 0.3 0.8 0.85 dBm (3) Website: www.asb.co.kr E-mail: [email protected] Tel: (82) 42-528-7223 Fax: (82) 42-528-7222 -18 / -18 17 18 µsec - Supply Current mA 100 Supply Voltage V 3.3 Impedance Ω 50 Switching Time More Information 30 dB Output P1dB Max 847 dB (1) 2-stage Single Type Specifications ASB Inc., 4th Fl. Venture Town Bldg., 367-17 Goijeong-Dong, Seo-Gu, Daejon 302-716, Korea 120 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 10 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 ALN0837 ASB Inc. (Top View) (Bottom View) Pin Number 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 November 2008 plerowTM ALN0837 Internally Matched LNA Module S-parameters 38 30 S11, S22, S12 [dB] 828~847 37 S21 10 36 0 35 34 -10 S11 -20 33 S22 -30 32 31 -40 +3.3 V -50 30 S12 29 -60 -70 826 S21 [dB] 20 Typical Performance (Measured) 828 830 832 834 836 838 840 842 844 846 848 28 850 Frequency [MHz] S-parameters & K Factor 50 12 11 S21 30 10 20 9 10 8 0 7 S22 6 -10 5 -20 S11 -30 4 3 -40 -50 2 S12 1 -60 -70 Stability Factor K 40 S-parameter [dB] Noise Figure 0 500 1000 1500 2000 2500 3000 0 3500 Frequency [MHz] OIP3 2/3 P1dB www.asb.co.kr November 2008 plerowTM ALN0837 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 November 2008