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plerowTM ALN1250
Internally Matched LNA Module Features
* 30 dB Gain at 1250 MHz * 16 dBm P1dB * 32 dBm Output IP3 * 0.9 dB Noise Figure * Operating at Single 5 V Supply * 80 mA Current Consumption
Description
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 = 25C, Vs = 5 V, Freq. =1250 MHz, Zo.sys = 50 ohm
Parameter Frequency Range Gain Gain Flatness Noise Figure Output IP3 S11 / S22
(1) (2)
Unit MHz dB dB dB dBm dB dBm
Specifications Min 1000 29 30 0.5 0.9 31 15 32 -16 / -10 16 80 5 50 C.W 29 ~ 31 (before fail) Surface Mount Type, 13Wx13Lx3.8H 100 0.6 0.95 Typ Max 1500
2-stage Single Type
More Information
Website: www.asb.co.kr E-mail: sales@asb.co.kr Tel: (82) 42-528-7223 Fax: (82) 42-528-7222 ASB Inc., 4th Fl. Venture Town Bldg., 367-17 Goijeong-Dong, Seo-Gu, Daejon 302-716, Korea
Output P1dB Switching Time Supply Current Supply Voltage Impedance Max. RF Input Power Package Type & Size
(3)
sec mA V dBm mm
Operating temperature is -40C to +85C. 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 Function RF In RF Out +Vcc Ground
plerow
ALN1250 ASB Inc.
(Top View) Solder Stencil Area (Bottom View)
3 8 10 Others
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.
(Side View)
O0.4 plated thru holes to ground plane (Recommended Footprint)
1/3 www.asb.co.kr April 2008
plerowTM ALN1250
Internally Matched LNA Module
S-parameters Typical Performance (Measured)
1000~1500 +5 V
Stability Factor (K)
Noise Figure
OIP3
P1dB
2/3
www.asb.co.kr
April 2008
plerowTM ALN1250
Internally Matched LNA Module Application Circuit
V DC + -
Tantal Capacitor
IN C1
ALN
C2
OUT
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
260C 20~40 sec
Evaluation Board Layout
+Vcc
Ramp-up (3C/sec) 200C
Ramp-down (6C/sec)
IN
OUT
150C 60~180 sec
Size 25 x 25mm (for ALN Series - 13x13mm)
3/3
www.asb.co.kr
April 2008

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