Datasheet LTC6990 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | TimerBlox: Voltage Controlled Silicon Oscillator |
| Pages / Page | 30 / 3 — ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 410 Kb |
| Document Language | English |
ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
- LTC6990CDCB#PBF LTC6990CDCB#TRMPBF LTC6990CDCB#TRPBF LTC6990CS6#PBF LTC6990CS6#TRMPBF LTC6990CS6#TRPBF LTC6990HDCB#PBF LTC6990HDCB#TRMPBF LTC6990HDCB#TRPBF LTC6990HS6#PBF LTC6990HS6#TRMPBF LTC6990HS6#TRPBF LTC6990IDCB#PBF LTC6990IDCB#TRMPBF LTC6990IDCB#TRPBF LTC6990IS6#PBF LTC6990IS6#TRMPBF LTC6990IS6#TRPBF LTC6990MPS6#PBF LTC6990MPS6#TRMPBF LTC6990MPS6#TRPBF
Text Version of Document
LTC6990
ELECTRICAL CHARACTERISTICS 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. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fOUT Output Frequency Recommended Range: RSET = 50k to 800k 0.488 1000 kHz Extended Range: RSET = 25k to 800k 0.488 2000 kHz ∆fOUT Frequency Accuracy (Note 4) Recommended Range ±0.8 ±1.5 % RSET = 50k to 800k l ±2.2 % Extended Range ±2.4 % RSET = 25k to 800k l ±3.2 % ∆fOUT/∆T Frequency Drift Over Temperature l ±0.005 %/°C ∆fOUT/∆V+ Frequency Drift Over Supply V+ = 4.5V to 5.5V l 0.23 0.55 %/V V+ = 2.25V to 4.5V l 0.06 0.16 %/V Long-Term Frequency Stability (Note 11) 90 ppm/√kHr Period Jitter (Note 10) NDIV = 1 0.38 %P-P NDIV = 2 0.22 %P-P 0.027 %RMS NDIV = 128 0.022 %P-P 0.004 %RMS Duty Cycle NDIV = 1, RSET = 25k to 800k l 47 50 53 % NDIV > 1, RSET = 25k to 800k l 48 50 52 % BW Frequency Modulation Bandwidth 0.4•fOUT kHz tS Frequency Change Settling Time tMASTER = tOUT/NDIV 6•tMASTER µs (Note 9)
Analog Inputs
VSET Voltage at SET Pin l 0.97 1.00 1.03 V ∆VSET/∆T VSET Drift Over Temperature l ±75 µV/°C ∆VSET/∆V+ VSET Drift Over Supply –150 µV/V ∆VSET/∆ISET VSET Droop with ISET –7 Ω RSET Frequency-Setting Resistor Recommended Range l 50 800 kΩ Extended Range l 25 800 kΩ VDIV DIV Pin Voltage l 0 V+ V ∆VDIV/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 l 235 283 µA V+ = 2.25V l 145 183 µA RL = ∞, NDIV = 1 RSET = 800k V+ = 5.5V l 71 105 µA V+ = 2.25V l 59 92 µA RL = ∞, NDIV = 128, RSET = 50k V+ = 5.5V l 137 180 µA V+ = 2.25V l 106 145 µA RL = ∞, NDIV = 128, RSET = 800k V+ = 5.5V l 66 100 µA V+ = 2.25V l 56 90 µA 6990fc For more information www.linear.com/LTC6990 3 Document Outline Features Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Related Parts
ELECTRICAL CHARACTERISTICS 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. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fOUT Output Frequency Recommended Range: RSET = 50k to 800k 0.488 1000 kHz Extended Range: RSET = 25k to 800k 0.488 2000 kHz ∆fOUT Frequency Accuracy (Note 4) Recommended Range ±0.8 ±1.5 % RSET = 50k to 800k l ±2.2 % Extended Range ±2.4 % RSET = 25k to 800k l ±3.2 % ∆fOUT/∆T Frequency Drift Over Temperature l ±0.005 %/°C ∆fOUT/∆V+ Frequency Drift Over Supply V+ = 4.5V to 5.5V l 0.23 0.55 %/V V+ = 2.25V to 4.5V l 0.06 0.16 %/V Long-Term Frequency Stability (Note 11) 90 ppm/√kHr Period Jitter (Note 10) NDIV = 1 0.38 %P-P NDIV = 2 0.22 %P-P 0.027 %RMS NDIV = 128 0.022 %P-P 0.004 %RMS Duty Cycle NDIV = 1, RSET = 25k to 800k l 47 50 53 % NDIV > 1, RSET = 25k to 800k l 48 50 52 % BW Frequency Modulation Bandwidth 0.4•fOUT kHz tS Frequency Change Settling Time tMASTER = tOUT/NDIV 6•tMASTER µs (Note 9)
Analog Inputs
VSET Voltage at SET Pin l 0.97 1.00 1.03 V ∆VSET/∆T VSET Drift Over Temperature l ±75 µV/°C ∆VSET/∆V+ VSET Drift Over Supply –150 µV/V ∆VSET/∆ISET VSET Droop with ISET –7 Ω RSET Frequency-Setting Resistor Recommended Range l 50 800 kΩ Extended Range l 25 800 kΩ VDIV DIV Pin Voltage l 0 V+ V ∆VDIV/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 l 235 283 µA V+ = 2.25V l 145 183 µA RL = ∞, NDIV = 1 RSET = 800k V+ = 5.5V l 71 105 µA V+ = 2.25V l 59 92 µA RL = ∞, NDIV = 128, RSET = 50k V+ = 5.5V l 137 180 µA V+ = 2.25V l 106 145 µA RL = ∞, NDIV = 128, RSET = 800k V+ = 5.5V l 66 100 µA V+ = 2.25V l 56 90 µA 6990fc For more information www.linear.com/LTC6990 3 Document Outline Features Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Related Parts
