SILICON MONOLITHIC BIPOLAR INTEGRATED CIRCUIT FOR ELECTRONIC TUNER TO-9 The is a monolithic integrated voltage stabilizer especially designed as voltage supplier for electronic tuners. FEATURES Low Temperature Coefficient Low Dynamic Resistance Typical Reference Voltage of 33V ABSOLUTE MAXIMUM RATINGS (T A= 5Î) Characteristic Symbol Value Unit Zener Current Power Dissipation (T A = 75Î) Operating Ambient Temperature- Range Storage Temperature Range I Z P D T OPR T STG 0 00-0 ~ 75-40 ~ 5 ma mw Î Î : Anode : Cathode ELECTRICAL CHARACTERISTICS (T A = 5Î) Characteristic Symbol Test Conditions Min Typ Max Unit Stabilized Voltage Stabilized Voltage-Temperature Drift Dynamic Resistance V Z LV Z/LT R Z I Z = 5mA I Z = 5mA T A = -0 to 75Î I Z = 5mA, f = KHz 3-0 0 35 5 V mv/î SCHEMATIC DIAGRAM Cathode R4 D D D5 R3 Q3 Q R R Anode Rev. B 999 Fairchild Semiconductor Corporation
MEASURING CIRCUITS Fig. Measuring Circuit for Stabilized Voltage V Z A IZ = 5mA RB v Volt Meter EB Fig. Measuring Circuit for Dynamic Resistance Iz IAC = Iz + 0 A 50œF 00 RB VV Fig. 3 IZ 0.œF C VV ~ f = KHz EB Vz 0.5mA r Z = VV 0.5mA 5mA VV
TYPICAL APPLICATION Ri Ach Bch Ych Zch Vi C 5K 5K 5K Channel setting variable resistor c c É to tuning diodes (varactor) in case of Ych on ) UHF TUNER TR D5 TR Antenna D D TR : RF AMP: KSC393 KSC 070 (Under developm ent) TR : OSC: SKC730 D - : S0 D5: MIXER: SS6 AFC terminal ) VHF TUNER TR TR3 Antenna D D TR TR : RM AMP : KSC393 TR : MIXER : KSC394 TR3 : OSC : KSC730 D, : S09 D, : S07 Low/High Channel Switching term inal. AFC terminal
POWER-TEMPERATURE DERATING DURVE TYPICAL CHARACTERISTIC CURVES (T A = 5Î) AMBIENT TEMPERATURE (Î) fig. 9 STABILIZED VOLTAGE TEMPERATURE DRIFT vs. ZENER CURRENT Fig. 0 STABILIZED VOLTAGE VARIATION vs. TIME ZENER CURRENT (ma)
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