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| VTV075 7.5 Watts, 25 Volts, Class A VHF Television - Band III GENERAL DESCRIPTION The VTV 075 is a COMMON EMITTER transistor capable of providing 7.5 Watts Peak Sync, Class A, RF Output Power over the band 175 - 225 MHz. It is designed for high efficiency, high linereity, Class A operation. Gold Metalization and Diffused Ballasting are used to provide high reliability and supreme ruggedness. CASE OUTLINE 55HV, STYLE 2 ABSOLUTE MAXIMUM RATINGS Maximum Power Dissipation @ 25oC Maximum Voltage and Current BVces Collector to Emitter Voltage BVceo Collector to Emitter Voltage BVebo Emitter to Base Voltage Ic Collector Current Maximum Temperatures Storage Temperature Operating Junction Temperature 53 Watts 45 Volts 25 Volts 4.0 Volts 4.0 Amps - 65 to + 150oC + 200oC ELECTRICAL CHARACTERISTICS @ 25 OC SYMBOL Pout Pin Pg IMD VSWR BVceo BVces BVebo hFE Cob jc CHARACTERISTICS Power Out - Pk Sync1 Power Input Power Gain Efficiency Intermodulation Distortion Load Mismatch Tolerance Collector to Emitter Breakdown Collector to Base Breakdown Emitter to Base Breakdown Current Gain Output Capacitance Thermal Resistance TEST CONDITIONS F = 175-225 MHz Vcc = 25 Volts Ic = 1.2Amps Pref = 7.5 Watts F = 225 MHz Ic = 25mA Ic = 50 mA Ie = 10 mA Vce = 5 V, 500 mA Vcb = 25 V, F = 1MHz Tc = 25oC, IR Scan MIN 7.5 10 TYP 10 11.2 33 - 52 MAX UNITS Watts Watts dB % dB 5:1 28 45 4.0 10 35 3.0 3.3 Volts Volts Volts pF C/W o Note 1: European three tone test method: Vision carrier -8dB, sound carrier -7dB, sideband signal -16 dB, 0 dB corresponds to peak sync level. Issue October 1997 GHz TECHNOLOGY INC. RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE. GHz RECOMMENDS THAT BEFORE THE PRODUCT(S) DESCRIBED HEREIN ARE WRITTEN INTO SPECIFICATIONS, OR USED IN CRITICAL APPLICATIONS, THAT THE PERFORMANCE CHARACTERISTICS BE VERIFIED BY CONTACTING THE FACTORY. GHz Technology Inc. 3000 Oakmead Village Drive, Santa Clara, CA 95051-0808 Tel. 408 / 986-8031 Fax 408 / 986-8120 VTV 075 August 1996 VTV-075 VTV-075 RF Test Circuit (Tunable 175-225 MHz) Recommended Bias: VCE=25 V, IC=1.2 A (DC Bias not shown) R1 vbb L6 C12 C13 L5 C14 C15 C16 C17 R2 Vcc L3 C10 C11 L4 .83" .56" C1 L1 .30" .51" .34" .94" C3 Q1 C4 C5 C6 C7 L2 .32" C9 C2 C8 C1, C9, C13, C14 ........ 470pF ceramic chip C2, C3, C8 ................... 5-70pF compressed mica C4 ................................. 75pF ceramic chip C5 ................................. 82pF ceramic chip C6 ................................. 2-20pF air tuned C7 ................................ 25-240pF compressed mica C10, C17 ..................... 50 mF electrolytic C11, C16 ..................... 1mF electolytic C12, C15 .................... 1000pF ceramic chip L1 ................... Cu strap, 1.20" X .12" X .03" L2 ................... Cu strap, 1.05" X .12" X .04" L3, L6 .............. 10 turns #22 wire on F627-8Q1 L4 ................... 4.7 m H L5 ................... 7 turns #22 wire (.15" outer diameter) R1, R2 ..............15 Ohm 1/2 Watt Carbon BOARD MATERIAL is 1/16" Teflon glass, 2 oz. Cu microstriplines are 50W nominal. August 1996 |
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