Datasheet LTC6905-XXX (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Fixed Frequency SOT-23 Oscillator |
| Páginas / Página | 8 / 1 — FEATURES. DESCRIPTIO. No External Components to Set Frequency. Frequency … |
| Formato / tamaño de archivo | PDF / 158 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTIO. No External Components to Set Frequency. Frequency Error:. 0.5% Typical. Fast Start-Up Time: 100. s Typical
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Versión de texto del documento
LTC6905-XXX Series Fixed Frequency SOT-23 Oscillator
U FEATURES DESCRIPTIO
■
No External Components to Set Frequency
The LTC®6905-XXX series are precision, fixed frequency ■
Frequency Error:
±
0.5% Typical
silicon oscillators designed to minimize board space while ■
Fast Start-Up Time: 100
µ
s Typical
maximizing accuracy and ease of use. ■ ±20ppm/°C Temperature Stability Programmed at the factory to a fixed frequency, the ■ Includes Output Enable LTC6905-XXX series of parts need no external trim com- ■ Includes Frequency Divide by 1, 2 or 4 ponents. An internal three-state divider allows for division ■ Rise Time: 0.5ns, CL = 5pF of the master clock by 1, 2 or 4, providing 3 frequencies ■ Timing Jitter: <0.8% Typical (for each device). ■ Duty Cycle: 50% ±2.5% ■ I The LTC6905-XXX series operate with a single 2.7V to S = 8mA Typical (fOSC = 100MHz, CL = 5pF) ■ CMOS Output Drives 600Ω Load 5.5V power supply and provide a rail-to-rail, 50% duty ■ Single Supply 2.7V to 5.5V cycle, square wave output. The OE pin will disable the ■ Low Profile (1mm) ThinSOTTM Package output when brought low and synchronously enable the output when brought high, avoiding pulse slivers.
U
The four products of the LTC6905-XXX family are:
APPLICATIO S
LTC6905-133: f ■ Data Clocks for High Reliability Applications OSC = 133MHz, 66.7MHz, 33.3MHz LTC6905-100: f ■ High Vibration, High Acceleration Environments OSC = 100MHz, 50MHz, 25MHz LTC6905-96: f ■ Replacement for Fixed Crystal and Ceramic OSC = 96MHz, 48MHz, 24MHz LTC6905-80: f Oscillators OSC = 80MHz, 40MHz, 20MHz , LTC and LT are registered trademarks of Linear Technology Corporation. The LTC6905-XXX series of parts provides a factory trim ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. option to modify the divider ratios from 1, 2, 4 to 8, 16, 32. Protected by U.S. Patents, including 6614313, 6342817. A second trim option allows for additional master clock frequencies. For the alternate divider ratios and unlisted frequencies, contact LTC marketing.
U TYPICAL APPLICATIO Typical Distribution of Frequency Error, TA = 25
°
C
40 VS = 3V
Basic Connection
30 fOSC = 133MHz 1 5 3V V+ OUT 0.1µF LTC6905-133 20 2 3V UNITS GND ÷1 3 4 ÷2 OE DIV OPEN 10 ÷4 6905x TA01 0 –1 –0.5 0.0 0.5 1 % FREQUENCY ERROR 6905x TA02 6905xfa 1
U FEATURES DESCRIPTIO
■
No External Components to Set Frequency
The LTC®6905-XXX series are precision, fixed frequency ■
Frequency Error:
±
0.5% Typical
silicon oscillators designed to minimize board space while ■
Fast Start-Up Time: 100
µ
s Typical
maximizing accuracy and ease of use. ■ ±20ppm/°C Temperature Stability Programmed at the factory to a fixed frequency, the ■ Includes Output Enable LTC6905-XXX series of parts need no external trim com- ■ Includes Frequency Divide by 1, 2 or 4 ponents. An internal three-state divider allows for division ■ Rise Time: 0.5ns, CL = 5pF of the master clock by 1, 2 or 4, providing 3 frequencies ■ Timing Jitter: <0.8% Typical (for each device). ■ Duty Cycle: 50% ±2.5% ■ I The LTC6905-XXX series operate with a single 2.7V to S = 8mA Typical (fOSC = 100MHz, CL = 5pF) ■ CMOS Output Drives 600Ω Load 5.5V power supply and provide a rail-to-rail, 50% duty ■ Single Supply 2.7V to 5.5V cycle, square wave output. The OE pin will disable the ■ Low Profile (1mm) ThinSOTTM Package output when brought low and synchronously enable the output when brought high, avoiding pulse slivers.
U
The four products of the LTC6905-XXX family are:
APPLICATIO S
LTC6905-133: f ■ Data Clocks for High Reliability Applications OSC = 133MHz, 66.7MHz, 33.3MHz LTC6905-100: f ■ High Vibration, High Acceleration Environments OSC = 100MHz, 50MHz, 25MHz LTC6905-96: f ■ Replacement for Fixed Crystal and Ceramic OSC = 96MHz, 48MHz, 24MHz LTC6905-80: f Oscillators OSC = 80MHz, 40MHz, 20MHz , LTC and LT are registered trademarks of Linear Technology Corporation. The LTC6905-XXX series of parts provides a factory trim ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. option to modify the divider ratios from 1, 2, 4 to 8, 16, 32. Protected by U.S. Patents, including 6614313, 6342817. A second trim option allows for additional master clock frequencies. For the alternate divider ratios and unlisted frequencies, contact LTC marketing.
U TYPICAL APPLICATIO Typical Distribution of Frequency Error, TA = 25
°
C
40 VS = 3V
Basic Connection
30 fOSC = 133MHz 1 5 3V V+ OUT 0.1µF LTC6905-133 20 2 3V UNITS GND ÷1 3 4 ÷2 OE DIV OPEN 10 ÷4 6905x TA01 0 –1 –0.5 0.0 0.5 1 % FREQUENCY ERROR 6905x TA02 6905xfa 1