ALN0878 ASB | Alldatasheet
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Technical content
1/4 www.asb.co.kr January 2011 plerowTM ALN0878 Internally Matched LNA Module 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 communi-cation 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. Pin Number Function 3 RF In 8 RF Out 10 Vs Others Ground Outline Drawing (Unit: mm) Features · S21 = 30.5 dB@816 MHz = 29.5 dB@940 MHz · NF of 0.75 dB over Frequency · Unconditionally Stable · Single 5 V Supply · High OIP3@Low Current 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.
Description
ALN0878 ASB Inc. (Top View) (Bottom View) Solder Stencil Area Ø0.4 plated thru holes to ground plane plerow (Side View) (Recommended Footprint) More Information 2-stage Single Type Specifications (in Production) Typ.@T = 25 °C, Vs = 5 V, Freq. = 878 MHz, Zo.sys = 50 ohms
2/4 www.asb.co.kr January 2011 plerowTM ALN0878 Internally Matched LNA Module S-parameters Noise Figure OIP3 P1dB 816~940 MHz +5 V Typical Performance (Measured) S-parameters & K Factor
3/4 www.asb.co.kr January 2011 plerowTM ALN0878 Internally Matched LNA Module 1. S-parameter 2. OIP3, P1dB & NF Note: tested at room temperature. 1. S-parameter 2. OIP3, P1dB & NF Note: tested at Vs= 5V. RF Performance with Operating Temperature RF Performance with Voltage Change
4/4 www.asb.co.kr January 2011 Application Circuit Recommended Soldering Reflow Process + - ALN OUT IN C1 C2 VS Tantal or MLC (Multi Layer Ceramic) Capacitor 20~40 sec 260 °C 200 °C 150 °C 60~180 sec Ramp-up (3 °C/sec) Ramp-down (6 °C/sec) IN OUT Vs Size 25x25mm (for ALN Series – 13x13mm) Evaluation Board Layout