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LTC6930-8.00 fiches techniques PDF

Linear - 32.768kHz to 8.192MHz Precision uPower Oscillators

Numéro de référence LTC6930-8.00
Description 32.768kHz to 8.192MHz Precision uPower Oscillators
Fabricant Linear 
Logo Linear 





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LTC6930-8.00 fiche technique
Features
n Frequency Error <0.09% Max at 25°C
n Start-Up Time <110µs at All Frequencies
n 1.7V to 5.5V Single Supply Operation
n 105µA Typical Supply Current at 32kHz, V+ = 3V
n 490µA Typical Supply Current at 8MHz, V+ = 3V
n Typical RMS Period Jitter <0.15% at V+ = 3V
n No External Components to Set Frequency
n 5 Options Cover 32.768kHz to 8.192MHz:
LTC6930-4.19: 4.194304MHz ÷ N
LTC6930-5.00: 5.000000MHz ÷ N
LTC6930-7.37: 7.372800MHz ÷ N
LTC6930-8.00: 8.000000MHz ÷ N
LTC6930-8.19: 8.192000MHz ÷ N
Where N = 1, 2, 4, 8, 16, 32, 64, 128
(N Determined by State of DIVA, DIVB, DIVC Pins)
n –55°C to 125°C Operating Temperature Range
n Tiny 2mm 3mm DFN or MS8 Package
Applications
n Digitally Controlled Oscillator
n Microprocessor Clock
n Power Supply Clock
n Portable and Battery Operated Devices
LTC6930-X.XX
32.768kHz to 8.192MHz
Precision µPower Oscillators
Description
The LTC®6930 series is a family of very low power precision
silicon oscillators with a frequency error less than 0.09%.
For each oscillator, the user can select one of 8 frequen-
cies between 32.768kHz and 8.192MHz. Based on a fixed
master oscillator frequency, internal frequency dividers
between 1 and 128 provide the 8 different frequencies.
The LTC6930 requires no external components other than
power supply bypass capacitors. Requiring only a single
1.7V to 5.5V supply enables operation from a single Li-Ion
cell or 2 AA alkaline cells.
The LTC6930 features a proprietary control architecture
that allows for ultralow power operation while maintaining
industry leading accuracy and jitter specifications. The
exceptionally fast start-up time, combined with the low
power consumption, is ideal for battery operated applica-
tions with frequent power-up cycles.
Any frequency from 32.768kHz to 8.192MHz can be pro-
vided by the factory. Minimum order sizes apply for custom
frequencies. Please consult LTC Marketing for details.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Protected by U.S. Patents, including 6342817, 6614313.
Typical Application
4MHz Micropower Clock Generator
V+ = 1.7V TO 5.5V
IS = 325µA AT 3VDC
0.1µF
V+ V+
DIVA
OUT
LTC6930-8.00
DIVB
DIVC
GND
GND
4MHz
6930 TA01a
Typical Frequency Error Distribution
70
60
VTA+
=
=
25°C
3V
DIV = 0
1045 UNITS
50
40
30
20
10
0
–0.10
–0.05
0
0.05
FREQUENCY ERROR (%)
0.10
6930 TA01b
For more information www.linear.com/LTC6930
6930fe
1

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