LTC6930-X.XX
32.768kHz to 8.192MHz
Precision µPower Oscillators
Features
Description
Frequency Error <0.09% Max at 25°C
Start-Up Time <110µs at All Frequencies
1.7V to 5.5V Single Supply Operation
105µA Typical Supply Current at 32kHz, V+ = 3V
490µA Typical Supply Current at 8MHz, V+ = 3V
Typical RMS Period Jitter <0.15% at V+ = 3V
No External Components to Set Frequency
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
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 frequencies 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.
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Applications
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Digitally Controlled Oscillator
Microprocessor Clock
Power Supply Clock
Portable and Battery Operated Devices
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 applications with frequent power-up cycles.
Any frequency from 32.768kHz to 8.192MHz can be provided 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
Typical Frequency Error Distribution
70
V+ = 1.7V TO 5.5V
IS = 325µA AT 3VDC
TA = 25°C
V+ = 3V
60 DIV = 0
1045 UNITS
50
0.1µF
V+
DIVA
OUT
LTC6930-8.00
DIVB
4MHz
40
30
20
DIVC
GND
UNITS
V+
10
GND
6930 TA01a
0
–0.10
–0.05
0
0.05
FREQUENCY ERROR (%)
0.10
6930 TA01b
6930fe
For more information www.linear.com/LTC6930
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