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| START420 NPN Silicon RF Transistor * LOW NOISE FIGURE: NFmin = 1.05dB @ 1.8GHz, 5mA, 2V * COMPRESSION P1dB = 12.5dBm @ 1.8GHz, 20mA, 2V * ULTRA MINIATURE SOT343 PACKAGE SOT343 (SC70) ORDER CODE START420TR BRANDING 420 DESCRIPTION The START420 is a member of the START family that provide market with the state of the art of RF silicon process. Manufacturated in the third generation of ST proprietary bipolar process, it offers the best mix of gain and NF for given breakdown voltage(BVceo). It reaches performance level only achieved with GaAs products before. APPLICATIONS * LNA FOR GSM/DCS, DECT, PDC, PCS, PCN * PREDRIVER FOR DECT * GENERAL PURPOSE 500MHz-5GHz ABSOLUTE MAXIMUM RATINGS Symbol Vceo Vcbo Vebo Ic Ib Ptot Tstg Tj Collector emitter voltage Collector base voltage Emitter base voltage Collector current Base current Total dissipation, Ts = 101 Storage temperature Max. operating junction temperature Parameter Value 4.5 15 1.5 40 4 180 -65 to 150 150 Unit V V V mA mA mW oC oC ABSOLUTE MAXIMUM RATINGS Rthjs Thermal Resistance Junction soldering point 270 oC/W July, 3 2002 1/7 START420 ELECTRICAL CHARACTERISTICS (Tj=25 oC,unless otherwise specified) Symbol Icbo Iebo Hfe NFmin Ga |S21|2 Gms (1) Parameter Collector cutoff current Emitter-base cutoff current DC current gain Minimim noise figure NFmin associated gain Insertion power gain Maximum stable gain 1dB compression point Ouput third order intercept point Test Conditions Vcb = 5V, Ie = 0A Veb = 1.5V, Ic = 0A Ic = 20mA, Vce = 3V Ic = 5mA, Vce = 2V, f = 1.8GHz, Zs = Zsopt Ic = 5mA, Vce = 2V, f = 1.8GHz Ic = 20mA, Vce = 2V, f = 1.8GHz Ic = 20mA, Vce = 2V, f = 1.8GHz Ic = 20mA,Vce = 2V, f = 1.8GHz Ic = 20mA,Vce = 2V, f = 1.8GHz Min. Typ. Max. 150 15 Unit nA A 100 150 1.05 16 19.5 22.6 12.5 23 dB dB dB dB dBm dBm P-1dB OIP3 Note(1): Gms = | S 21 / S12 | PINOUT 4 3 PIN CONNECTION Top view 1 2 Pin No. 1 3 2,4 Description BASE COLLECTOR EMITTER SOT343 2/7 START420 SPICE PARAMETERS (Gummel-Poon Model, Berkley-SPICE 2G.6 Syntax) TRANSISTOR CHIP DATA Symbol TMEAS IS ISE NR ISC IKF TR XTF RB RC CJE CJC CJS Value 27.0 1.00E-16 1.58E-11 1 1.55E-15 {0.217*((T(oC)+273.15)/ 300.15)^(-1.63)} 7E-10 9.84 12.86 3.7 421E-15 160E-15 112E-15 Symbol FC EG NF NE BR NC PTF ITF RBM RE VJE VJC VJS Value 0.66 1.12 1 3.1 9.52 1.495 32.0 0.498 5 0.42 1.03 0.6 0.4 Symbol XJBC XTI BF VAF VAR TF VTF MJE MJC MJS IKR XTB Value 0.53 3.76 280 70 2.3 3.0E-12 27.9 0.497 0.292 0.245 8.32E-3 -0.54 PACKAGE EQUIVALENT CIRCUIT C2 C=66 fF B . L4 L=0.6 nH . L3 B' L=0.35 nH Transistor Chip E' L1 C' L5 L=0.3 nH . L6 L=0.6 nH . C L=0.1 nH C1 C=436 fF L2 . . E C3 C=334 fF L=0.05 nH In order to avoid high complexity of the package equivalent circuit, the two emitter leads of SOT-343 package are combined in one electrical connection. FOR MORE ACCURACY SIMULATION IN SATURATION REGION : Adding the 5 Spice parameters showed in Table A and using ST Spice Library (available on request) you can achieve a more accuracy simulation in the saturation region. ST Spice library is compatible with following simulators: ELDO MENTOR (any version), SPECTRE CADENCE (any version), ADS (version 2001 only). Table A (Spice Parameters extracted in saturation region) RW 1.173 Vjj 0.8 ENP 2.085 VRP {4.12*((TEMPER+273.15)/300.15)^(0.303)} RP 1.00E-6 3/7 START420 COMMON EMITTER S-PARAMETERS ( VCE = 2V, IC = 20mA ) FREQ (MHz) 0.1 0.5 0.9 1 1.5 1.8 2 2.5 3 3.5 4 IS11I 0.700 0.545 0.480 0.476 0.484 0.494 0.503 0.513 0.533 0.552 0.559 S11 -22 -90 -130 -137 -167 180 172 158 148 140 134 IS21I 42.223 27.116 18.322 16.756 11.532 9.528 8.390 6.364 4.936 4.546 3.873 S21 164 120 98 94 77 68 63 54 46 37 28 IS12I 0.010 0.027 0.036 0.038 0.048 0.052 0.055 0.061 0.069 0.077 0.085 S12 89 58 48 47 42 39 37 32 27 21 14 IS22I 0.932 0.632 0.421 0.387 0.263 0.210 0.183 0.148 0.143 0.153 0.154 S22 -12 -51 -71 -75 -96 -111 -123 -154 -171 178 163 4/7 START420 TAPE & REEL DIMENSIONS mm MIN. A C D N T Ao Bo Ko Po P 3.8 (cumulative 10 Po) 2.25 2.7 1.2 4.0 4.0 4.2 (cumulative 10 Po) 178.5 12.8 20.2 54.5 55 55.5 14.4 TYP. 179 13.0 MAX 179.5 13.5 DEVICE ORIENTATION TOP VIEW END VIEW 420 420 420 420 5/7 START420 PACKAGE DIMENSIONS SOT343 (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 0.45 0.10-0.20 0.25-0.35 0.00-0.10 6/7 START420 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 (R) 2002 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 7/7 |
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