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LTC6990CDCB-PBF Datasheet(PDF) 3 Page - Linear Technology |
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LTC6990CDCB-PBF Datasheet(HTML) 3 Page - Linear Technology |
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3 / 28 page  LTC6990 3 6990p ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS fOUT Output Frequency Recommended Range: RSET = 50k to 800k Extended Range: RSET = 25k to 800k 0.488 0.488 1000 2000 kHz kHz ΔfOUT Frequency Accuracy (Note 4) Recommended Range RSET = 50k to 800k l ±0.8 ±1.5 ±2.2 % % Extended Range RSET = 25k to 800k l ±2.4 ±3.2 % % ΔfOUT/ΔT Frequency Drift Over Temperature l ±0.005 %/°C ΔfOUT/ΔV+ Frequency Drift Over Supply V+ = 4.5V to 5.5V V+ = 2.25V to 4.5V l l 0.23 0.06 0.55 0.16 %/V %/V Period Jitter (Note 10) NDIV = 1 0.38 %P-P NDIV = 2 0.22 0.027 %P-P %RMS NDIV = 128 0.022 0.004 %P-P %RMS Duty Cycle NDIV = 1, RSET = 25k to 800k NDIV > 1, RSET = 25k to 800k l l 47 48 50 50 53 52 % % BW Frequency Modulation Bandwidth 0.4•fOUT kHz tS Frequency Change Settling Time (Note 9) tMASTER = tOUT/NDIV 6•tMASTER μs Analog Inputs VSET Voltage at SET Pin l 0.97 1.00 1.03 V ΔVSET/ΔT VSET Drift Over Temperature l ±75 μV/°C ΔVSET/ΔV+ VSET Drift Over Supply –150 μV/V ΔVSET/ΔISET VSET Droop with ISET –7 Ω RSET Frequency-Setting Resistor Recommended Range Extended Range l l 50 25 800 800 kΩ kΩ VDIV DIV Pin Voltage l 0V+ V ΔVDIV/V+ DIV Pin Valid Code Range (Note 5) Deviation from Ideal VDIV/V+ = (DIVCODE + 0.5)/16 l ±1.5 % DIV Pin Input Current l ±10 nA Power Supply V+ Operating Supply Voltage Range l 2.25 5.5 V Power-On Reset Voltage RSET = 25k to 800k l 1.95 V IS Supply Current RL = ∞, NDIV = 1, RSET = 50k V+ = 5.5V V+ = 2.25V l l 235 145 283 183 μA μA RL = ∞, NDIV = 1 RSET = 800k V+ = 5.5V V+ = 2.25V l l 71 59 105 92 μA μA RL = ∞, NDIV = 128, RSET = 50k V+ = 5.5V V+ = 2.25V l l 137 106 180 145 μA μA RL = ∞, NDIV = 128, RSET = 800k V+ = 5.5V V+ = 2.25V l l 66 56 100 90 μA μA The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Test conditions are V+ = 2.25V to 5.5V, OE = V+, DIVCODE = 0 to 15 (NDIV = 1 to 128), RSET = 50k to 800k, RLOAD = 5k, CLOAD = 5pF unless otherwise noted. |
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