plerowTM ALN1951 Internally Matched LNA Module Features Description · S21 = 27.1 dB @ 1940 MHz = 26.9 dB @ 1960 MHz · NF of 0.65 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. = 1950 MHz, Zo.sys = 50 ohm Parameter Unit Frequency Range Min MHz 1940 Gain dB 26 Gain Flatness dB Noise Figure Output IP3 S11 / S22 Typ dBm (2) 27 32 ± 0.1 ± 0.2 0.65 0.70 dBm (3) Website: www.asb.co.kr E-mail: [email protected] Tel: (82) 42-528-7223 Fax: (82) 42-528-7222 -18 / -10 19.5 20.5 µsec - Supply Current mA 75 Supply Voltage V 5 Impedance Ω 50 Switching Time More Information 33 dB Output P1dB Max 1960 dB (1) 2-stage Single Type Specifications ASB Inc., 4th Fl. Venture Town Bldg., 367-17 Goijeong-Dong, Seo-Gu, Daejon 302-716, Korea 90 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 5 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 3 RF In ALN1951 8 RF Out ASB Inc. 10 +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) Ø0.4 plated thru holes to ground plane (Recommended Footprint) 1/4 www.asb.co.kr November 2008 plerowTM ALN1951 Internally Matched LNA Module S-parameters Typical Performance (Measured) WCDMA 1940~1960 +5 V S-parameters & K Factor Noise Figure OIP3 2/4 P1dB www.asb.co.kr November 2008 plerowTM ALN1951 Internally Matched LNA Module RF Performance with Voltage Change Item S11 (dB) S22 (dB) S21 (dB) G/F (dB) NF (dB) P1dB (dBm) OIP3 (dBm) Current (mA) 4.5 -22.46 -11.55 26.80 0.05 0.664 19.02 28.18 48 4.6 -22.73 -11.37 27.01 0.06 0.656 19.38 29.04 52 4.7 -22.96 -11.22 27.18 0.06 0.653 19.69 30.25 56 4.8 -23.19 -11.09 27.31 0.06 0.651 20.05 31.14 60 4.9 -23.24 -10.98 27.43 0.07 0.655 20.42 31.94 65 5.0 -23.43 -10.87 27.53 0.07 0.657 20.75 33.32 69 5.1 -23.60 -10.82 27.58 0.07 0.655 21.18 34.00 74 5.2 -23.72 --10.75 27.64 0.07 0.670 21.57 35.01 78 5.3 -23.86 -10.63 27.74 0.07 0.671 21.76 35.92 83 5.4 -23.78 -10.58 27.82 0.07 0.671 22.08 36.50 88 5.5 -23.90 -10.51 27.88 0.06 0.666 22.42 36.81 93 Voltage RF Performance with Operating Temperature Item S11 (dB) S22 (dB) S21 (dB) G/F (dB) NF (dB) P1dB (dBm) OIP3 (dBm) Current (mA) - 40°C -23.84 -10.73 27.97 0.07 0.420 20.86 31.71 63 - 20°C -24.07 -10.79 27.85 0.07 0.565 20.82 32.29 65 0°C -24.06 -10.87 27.63 0.07 0.576 20.90 32.85 67 25°C -24.03 -10.83 27.48 0.08 0.657 21.07 33.82 69 40°C -23.56 -10.95 27.30 0.08 0.687 20.93 33.78 71 60°C -23.29 -11.11 27.09 0.08 0.754 20.76 33.82 73 80°C -22.39 -11.22 26.84 0.08 0.879 20.56 33.54 75 100°C -22.04 -11.23 26.74 0.07 0.947 20.16 33.12 76 Temp. 3/4 www.asb.co.kr November 2008 plerowTM ALN1951 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) 4/4 www.asb.co.kr November 2008