LTC6900 Linear Technology, LTC6900 Datasheet
LTC6900
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LTC6900 Summary of contents
Page 1
... The LTC6900 operates with a single 2.7V to 5.5V power supply and provides a rail-to-rail, 50% duty cycle square wave output. The CMOS output driver ensures fast rise/fall times and rail-to-rail switching. The frequency-setting ...
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... GND ........................– 0. DIV to GND .................................... – 0. SET to GND ................................... – 0. Operating Temperature Range (Note 8) LTC6900C .......................................... – LTC6900I ............................................ – Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 C www.DataSheet4U.com ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T All voltages are with respect to GND ...
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... Note 7: Guaranteed by 5V test. Note 8: The LTC6900C is guaranteed to meet specified performance from 200k The LTC6900C is designed, characterized and expected to SET meet specified performance from – but is not tested or QA sampled at these temperatures. The LTC6900I is guaranteed to meet specified performance from – ...
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... Peak-to-Peak Jitter vs Output Frequency 1.0 0.9 0.8 0.7 0 0.5 0.4 0.3 10 0.2 100 0 10k 100k OUTPUT FREQUENCY (Hz) 6900 G02 LTC6900 Output Operating at 20MHz 5V 10k SET 1V/DIV 0V 12.5ns/DIV 5.0 5.5 6.0 6900 G05 6900 G07 10M 6900 G03 = 10pF L 6900 G06 ...
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... OUT (Pin 5): Oscillator Output. This pin can drive 5k and/or 10pF loads. Heavier loads may cause inaccuracies due to supply bounce at high frequencies. Voltage tran- sients, coupled into Pin 5, above or below the LTC6900 power supplies will not cause latchup if the current into/ out of the OUT pin is limited to 50mA. ...
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... MHz • SET The LTC6900 is optimized for use with resistors between 10k and 2M, corresponding to master oscillator frequen- cies between 100kHz and 20MHz. To extend the output frequency range, the master oscilla- tor signal may be divided 100 before driving OUT (Pin 5). The divide-by value is determined by the state of the DIV input (Pin 4) ...
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... DIV (Pin master oscillator frequencies greater than 10MHz (R LTC6900 may experience reduced accuracy with a supply voltage less than 4V. After choosing the proper divider setting, determine the correct frequency-setting resistor. Because of the linear correspondence between oscillation period and resis- tance, a simple equation relates resistance with frequency. ...
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... LTC6900. Otherwise, the oscillator may show additional frequency error. If the LTC6900 is powered by a switching regulator and the switching frequency or its harmonics coincide with the output frequency of the LTC6900, the jitter of the oscillator output may be affected. This phenomenon will become noticeable if the switching regulator exhibits ripples be- yond 30mV ...
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... The frequency variation of the LTC6900 is still monotonic. Figure 9 shows how to implement the concept shown in Figure 8 by connecting a second resistor, R SET pin and a ground referenced voltage source, V For a given power supply voltage in Figure 9, the output frequency of the LTC6900 is a function and (V – ...
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... IN(MAX) The maximum VCO modulation bandwidth is 25kHz; that = 0V. Solve for SET is, the LTC6900 will respond to changes 9.9/ 110.1k by SET SET to 25kHz. In lower frequency applications however, the = 1.089M. For standard SET modulation frequency may need to be limited to a lower = 110k (1%) and ...
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... V ). Calulate first with V 1.1V, then use Table 2 to get a better approximation of V RES . RES 2.90 BSC (NOTE 4) PIN ONE 0.30 – 0.45 TYP 0.95 BSC 5 PLCS (NOTE 3) 0.01 – 0.10 1.90 BSC S5 TSOT-23 0302 LTC6900 || R IN SET + RES 1.03V 1.08V 1.12V 1.15V 1.17V 1.1V. For completeness, RES and R ...
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... LTC1799 1kHz to 30MHz ThinSOT Oscillator Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 U Temperature-to-Frequency Converter OUT C1 LTC6900 0.1 F 100k GND THERMISTOR 3 4 SET DIV 6900 TA02 R : YSI 44011 800 765-4974 T Output Frequency vs Temperature ...