UNISONIC TECHNOLOGIES CO., LTD K1109 N-CHANNEL JFET N-CHANNEL JFET FOR ELECTRET CONDENSER MICROPHONE DESCRIPTION The UTC K1109 is N-channel JFET for electrets condenser microphone. FEATURES * High GM Implies Low Transfer loss * Built-In Gate-Source Diode and Resistor Implies Fast Power on Settling Time ORDERING INFORMATION Ordering Number Lead Free Halogen Free K1109L-x-AC3-R K1109G-x-AC3-R K1109L-x-AE3-R K1109G-x-AE3-R Package SOT-113 SOT-23 Pin Assignment 1 2 3 S D G S D G Packing Tape Reel Tape Reel MARKING www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd 1 of 4 QW-R206-009.K K1109 N-CHANNEL JFET ABSOLUTE MAXIMUM RATINGS (unless otherwise specified ) PARAMETER SYMBOL RATINGS UNIT Drain-Source Voltage VDSX 20 V Gate-Drain Voltage VGDO -20 V Drain Current ID 10 mA Gate Current IG 10 mA Power Dissipation PD 80 mW Junction Temperature TJ +125 °C Storage Temperature TSTG -55 ~ +125 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (TJ=25°C, unless otherwise specified) PARAMETER Drain Current Gate Off Voltage Forward Transfer Admittance Input Capacitance Noise Voltage SYMBOL IDSS VGS(OFF) lYFSl CISS NV TEST CONDITIONS VDS=2.0V, VGS=0 VDS=5.0V, ID=1.0μA VDS=5.0V, VGS=0, f=1kHz VDS=5.0V, VGS=0, f=1.0MHz MIN 40 -0.1 600 TYP MAX UNIT 600 μA -1.0 V 1600 μS 7.0 8.0 pF 1.8 3.0 V CLASSIFICATION OF IDSS RANK RANGE J32 40-70 J33 60-110 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw J34 90-180 J35 150-300 J36 200-450 J37 300-600 2 of 4 QW-R206-009.K K1109 N-CHANNEL JFET TEST CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 4 QW-R206-009.K K1109 N-CHANNEL JFET TYPICAL CHARACTERISTICS Drian Current vs Drain Source Voltage(J35) 600 0.15V Drain Current,ID(uA) 500 0.10V 400 0.05V 300 VGS=0V 200 -0.05V -0.10V -0.15V 100 0 2 0 4 6 8 10 Drain Source Voltage,VDS(V) Power Dissipatio vs Ambient Temperature Allowable power dissipation,PC(mW) 100 75 50 25 0 0 25 50 75 100 125 Ambient Temperature, TA ( ) |YFS| - IDSS 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 350 200 150 250 300 Zero-Gate Voltage Drain Current,IDSS-uA 100 UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 4 QW-R206-009.K