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LTC6908CS6-1 Datasheet(PDF) 3 Page - Linear Technology |
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LTC6908CS6-1 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 16 page  LTC6908-1/LTC6908-2 3 690812fa The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Test conditions are V + = 2.7V to 5.5V, RL = 5k, CL = 5pF unless otherwise noted. The modulation is turned off (MOD is connected to OUT2) unless otherwise specified. RSET is defined as the resistor connected from the SET pin to the V+ pin. ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ΔfOUT Frequency Accuracy (Note 4) V+ = 2.7V 250kHz ≤ fOUT ≤ 5MHz 250kHz ≤ fOUT ≤ 5MHz 50kHz ≤ fOUT < 250kHz ● ● ±0.5 ±2 ±2.5 ±1.5 ±2.5 ±3.5 % % % V+ = 5V 250kHz ≤ fOUT ≤ 5MHz 250kHz ≤ fOUT ≤ 5MHz 50kHz ≤ fOUT < 250kHz 5MHz < fOUT ≤ 10MHz ● ● ● ±1 ±2.5 ±3 ±3.5 ±2 ±3 ±4 ±4.5 % % % % RSET Frequency Setting Resistor Range V+ = 2.7V | ΔfOUT | ≤ 1.5% | ΔfOUT | ≤ 2.5% | ΔfOUT | ≤ 3.5% ● ● 20 20 400 400 400 2000 k k k V+ = 5V | ΔfOUT | ≤ 2% | ΔfOUT | ≤ 3% | ΔfOUT | ≤ 4% | ΔfOUT | ≤ 4.5% ● ● ● 20 20 400 10 400 400 2000 20 k k k k ΔfOUT/ΔT Frequency Drift Over Temperature RSET = 100k ● ±0.004 %/°C ΔfOUT/ΔV+ Frequency Drift Over Supply (Note 4) V+ = 2.7V to 3.6V, RSET = 100k V+ = 4.5V to 5.5V, RSET = 100k ● ● 0.04 0.4 0.25 0.9 %/V %/V Period Variation (Frequency Spreading) RSET = 100k, MOD Pin = V +, GND or OPEN ● ±7.5 ±10 ±12.5 % Long-Term Stability of Output Frequency (Note 8) 300 ppm/√kHr Duty Cycle (Note 5) No Modulation, 250kHz ≤ fOUT ≤ 1MHz ● 45 50 55 % V+ Operating Supply Range ● 2.7 5.5 V IS Power Supply Current RSET = 2000k, RL = ∞, fOUT = 50kHz, MOD Pin = V + V+ = 5V V+ = 2.7V ● ● 0.4 0.4 0.65 0.6 mA mA RSET = 20k, RL = ∞, fOUT = 5MHz, MOD Pin = GND V+ = 5V V+ = 2.7V ● ● 1.25 0.9 1.7 1.3 mA mA VIH_MOD High Level MOD Input Voltage ● V+ – 0.4 V VIL_MOD Low Level MOD Input Voltage ● 0.4 V IMOD MOD Pin Input Current (Note 6) MOD Pin = V+, V+ = 5V MOD Pin = GND, V+ = 5V ● ● –4 2 –2 4µA µA VOH High Level Output Voltage (Note 6) (OUT1, OUT2) V+ = 5V IOH = –0.3mA IOH = –1.2mA ● ● 4.75 4.4 4.9 4.7 V V V+ = 2.7V IOH = –0.3mA IOH = –0.8mA ● ● 2.35 1.85 2.6 2.2 V V VOL Low Level Output Voltage (Note 6) V+ = 5V IOL = 0.3mA IOL = 1.2mA ● ● 0.05 0.2 0.15 0.5 V V V+ = 2.7V IOL = 0.3mA IOL = 0.8mA ● ● 0.1 0.4 0.3 0.7 V V tr Output Rise Time (Note 7) V+ = 5V V+ = 2.7V 6 11 ns ns tf Output Fall Time (Note 7) V+ = 5V V+ = 2.7V 5 9 ns ns |
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