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DS1087L Datasheet(PDF) 3 Page - Dallas Semiconductor |
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DS1087L Datasheet(HTML) 3 Page - Dallas Semiconductor |
3 / 12 page 3.3V Spread-Spectrum EconOscillator _____________________________________________________________________ 3 MASTER OSCILLATOR CHARACTERISTICS (VCC = 2.7V to 3.6V, TA = -40°C to +85°C.) PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS Master Oscillator Range Available f0 33.3 66.6 MHz Master Oscillator Frequency Tolerance ∆f0 f0 VCC = 3.3V, TA = +25 °C (Notes 2, 13) -0.5 +0.5 % Voltage Frequency Variation ∆fV f0 Over voltage range, TA = +25 °C (Note 3) -0.75 +0.75 % Temperature Frequency Variation ∆fT f0 0°C to +70°C, VCC = 3.3V (Note 4) -0.5 +0.5 % Temperature Frequency Variation ∆fT f0 -40°C to +85°C, VCC = 3.3V (Note 4) -1.5 +0.5 % Prescaler bit J0 = 1 (Note 5) 2 Dither Frequency Range Prescaler bit J0 = 0 (Note 5) 4 % Dither Rate f0 / 4096 Hz AC ELECTRICAL CHARACTERISTICS (VCC = 2.7V to 3.6V, TA = -40°C to +85°C.) PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS Frequency Stable After PRESCALER Change 1 period Power-Up Time tPOR + tSTAB (Note 6) 0.1 0.5 ms Enable of OUT After Exiting Power-Down Mode tSTAB 500 µs OUT Disabled After Entering Power-Down Mode tPDN 1ms Load Capacitance CL (Note 7) 15 50 pF Output Duty Cycle (OUT) TA = +25°C 45 55 % |
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