SMA427A 50 Ω / 50 Ω Low Noise Amplifier PRELIMINARY DATA • CASCADABLE 50 ohm-GAIN BLOCK • UNCONDITIONALLY STABLE • GAIN |S21|2 = 17 dB at 1.8 GHz • IP3out = +7.4 dBm at 1.575 GHz (VD = 3 V, ID = 9.5 mA) • NOISE FIGURE NF = 2.2 dB at 1.8 GHz • TYPICAL DEVICE VOLTAGE VD = 2 V to 5 V • ULTRA MINIATURE SOT323-4L PACKAGE (LEAD FREE) APPLICATIONS LNA FOR 1-2 GHz APPLICATIONS (GPS, Cellular..) SOT323-4L (SC70) ORDER CODE SMA427ATR BRANDING TBD BLOCK DIAGRAM 3 DESCRIPTION SMA427A is a product of the SMA Family (Silicon MMIC Amplifiers). Housed in the ultra miniature 4-lead SC-70 (SOT323-4L LEAD FREE) surface mount plastic package, it embeds the state of the art Silicon ST technology. The amplifier application shows excellent RF performance using only two external component in the 1000-2000MHz frequency range. 4 IN +V OUT 1 2 GND ABSOLUTE MAXIMUM RATINGS Symbol Parameter VD Device Voltage ID Device Current Value Unit 6 V 27 mA Total dissipation, Ts = 120 C TBD mW PRFin RF Input Power -10 dBm Tamb Ambient Temperature Ptot Tstg Tj o Storage temperature Max. operating junction temperature -65 to +150 o -65 to +150 o 150 o C C C THERMAL RESISTANCE Rthjs January, 7 2003 Thermal Resistance Junction soldering point TBD o C/W 1/6 SMA427A ELECTRICAL CHARACTERISTICS (Ta = +25oC, VD = 3V, Zo = 50Ω, tested in circuit shown in Appl.1, unless otherwise specified) Symbol Parameter Id Supply Current Test Conditions Min. Typ. Max. Unit 9.5 mA 22 18 17 dB |S21|2 Insertion power gain f = 1 GHz f = 1.575 GHz f = 1.8 GHz S12 Reverse Isolation f = 1 GHz f = 1.575 GHz f = 1.8 GHz 27 25 20 dB NF Noise Figure f = 1 GHz f = 1.575 GHz f = 1.8 GHz 1.8 2 2.2 dB IP3out Intercept point at output f = 1.575 GHz 7.4 dBm RLin Input Return Loss f = 1 GHz f = 1.575 GHz f = 1.8 GHz >12 >12 >12 dB RLout Output Return Loss f = 1 GHz f = 1.575 GHz f = 1.8 GHz >12 >12 >12 dB PIN CONNECTION Pin No. 3 4 Top view 1 2 Description 1 IN 2 GND 3 +V 4 OUT SOT343 SOT343 Typical configuration C2 33p C3 10p 1 C 4 SMA 427A J1 RF IN 2 J2 RF OUT 3 C4 U1 47n B Vcc 2 1 Title + C1 1u Size A Date: File: 1 2/6 Number Revision A4 2 23-Jul-2002 Sheet of C:\PROGETTI\SMA DEVICE\SMA 427\SMA Drawn 427.ddb By: 3 4 SMA427A S-Parameters -10 0 -5 -15 -10 -15 -20 S12 S11 -20 -25 Vcc = 5V -30 -35 Vcc = 3V -25 Vcc = 3V -30 Vcc = 5V -40 -35 -45 -50 500 1000 1500 f (M Hz) 2000 -40 500 2500 1000 1500 2000 2500 2000 2500 f (MHz) 30 0 28 -5 26 -10 Vcc = 5V 24 Vcc = 5V -15 Vcc = 3V -20 20 S22 S21 22 18 -25 Vcc = 3V 16 -30 14 -35 12 -40 10 8 500 1000 1500 f (M Hz) 2000 -45 500 2500 1000 1500 f (MHz) Noise Figure vs. Frequency 3 2.5 Vcc = 3V NF (dB) 2 Vcc = 5V 1.5 1 0.5 0 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 f (MHz) 3/6 SMA427A TAPE & REEL DIMENSIONS mm MIN. TYP. MAX A 178.5 179 179.5 C 12.8 13.0 13.5 D 20.2 N 54.5 55 55.5 T 14.4 Ao 2.25 Bo 2.7 Ko 1.2 Po 3.8 (cumulative 10 Po) P 4.0 4.2 (cumulative 10 Po) 4.0 DEVICE ORIENTATION TOP VIEW 427 4/6 427 427 END VIEW 427 SMA427A PACKAGE DIMENSIONS SOT323-4L (SC-70 4 leads) 1.30 1.15-1.35 2.00-2.20 1.15 0.55-0.65 1.90-2.10 1.15-1.35 0.80-1.00 0.25-0.35 0.00-0.10 0.45 0.10-0.20 5/6 SMA427A Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is registered trademark of STMicroelectronics 2003 STMicroelectronics - All Rights Reserved All other names are the property of their respective owners. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 6/6