U308 ETC

Document overview

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Technical content

  • • • See Section 4
  • VHF Amplifiers BENEFITS
  • I ndustry Standard
  • Front End High Sensitivity • High Power Gain Amplifiers 16 dB at 105 MHz, Common-Gate 11 dB at 450 MHz, Common-Gate
  • Oscillators • Low Noise Mixers 2.7 dB Noise Figure at 450 MHz
  • • Wide Dynamic Range Greater than 100 dB
  • 75 n Input Match Common Gate ABSOLUTE MAXIMUM RATINGS (25°C) TO-52 G~: Lead Temperature G,C ! s ELECTRICAL CHARACTERISTICS (25°C unless otherwise noted) Characteristic U30a U309 U310 Unit Test Conditions Min TVp Max Min TVp M .. Min TVp Max 1 -150 -150 --150 pA VGS=-15V, ,--;- IGSS Gate Reverse Current -150 -150 -150 nA VGS =0 TA=125°C '-S Gate-Source Breakdown 3 T BVGSS Voltage -25 -25 -25 IG = -1 /-lA, VOS == a -A v - I Saturation Drain Current 5 C IDSS (Note 1f 12 60 12 30 2. 60 mA VOS=10V,VGS=O

6 VGS(f)

Voltage 1.0 1.0 1.0 V IG = 10 rnA, VOS = 0 Common-Gate Forward 10 20 10 20 10 18 mmho gIg Transconductance (Note 1) !-O VOS=10V, f::= 1 kHz B y Common-Gate Output 150 150 150 J.lmho ID=10mA '9: gog Conductance Cgd Drain-Gate Capacitance 2.5 2.5 2.5 VGS = -10 V, -M pF f= 1 MHz 10 I C g• Gate·Source Capacitance 5.0 5.0 5.0 VOS=10V '-C - Equivalent Short Circuit nV VOS=10V, 11 en Input Noise Voltage 10 10 10 JH, lo=10mA f = 100 Hz

12 Common-Gate Forward 15 15 15 f = 105 MHz

  • 91g Transconductance ..2:. 14 " ,. f = 450 MHz H gog Conductance 0.32 0.32 0.32 VOS=10V, f=450MHz F 16 R Common·Gate Power ,. 16 ,. 16

16 IO=10mA f=105MHz

'77 E G pg Gain (Note 2) 10 11 10 11 10 11 f = 450 MHz 1"':':-Q 1..2! NF Noise Figure NOTES, NZA 1. Pulse test duration = 2 ms. 2. Gain tGpg) measured at optimum input noise match. © 1977 Siliconix Incorporated 3-127 c CO C C w

APPLICATIONS

200-250 MHz Wideband Amplifer (1 dB Ripple) 3-Stage Amplifier Circuit C,.c..,C1,Cg=68pF C2.~ R500pF C3.CS. Ca ~ l,ooopF L,. LJ, lS ~ 12DnHy lZ.L4-Ls R 222 nHy RFe,. RFC2 ~ 2.2"HV VO-+2DV Q,. 02. ~ ~ S;ljoon,~ U310 R,. R2 ~51 U

450 MHz Common Gate Amplifier

Ct. Cz 0.8_10 pF JFD model MVM OIOW Cs,C6- 50OO pFE".1244J·OOO) Cl -100DpFALLEN-BRADlEY1vpeFA5C >Voo RFC- 33"H MILLER tyJJ/! (92JOJOI T, "16copperw,re, Yo"IO. (A" Corel T2P 16 c""pe' WIre, '4" I 0 IA"Corel Prototype Active Balanced Mixer* C"CS-·Olpid ~,C4-1-10pF ~ _1000pF Ce.Ca-30 pF e"Cg-68pF C,0 -o.ll!f L"LZ-l.3 ... hy 0,. Oz-U310 T, -RELCOMBT·9 *Reference Siliconix Application Note AN71-2, " q"'''o"\\'..", III III III III III III 3-128

2 Tone Intercept & Compression

-21) -40 BIW 11181-50 ~HZ INTERCEPT~INT fo-225MHz G'"24dB IdB / / COMPo / / / / JrdDRDER / INTERMODU-_ LATION PRODUCT POWER IN (dBml Noise Figure vs. Power Gain f=450MHz I-t-t-t-t-t-t-t-t-H" GdlN I;:;:R=f=4~++-+=H" NOISl FIGUR~ --~ 9 3dB BANDWIDTH-l0MHz o 0

46 B 101214161820 2224

10 - DRAIN CURRENT (rnA) Comparison of Mixer 1M Characteristics 1700ohms •••• SOOOohms- VGS - GATE-SQURCE VOLTAGE (VOLTS)