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LTC6930CDCB-7.37-TRPBF

Description
32.768kHz to 8.192MHz Precision μPower Oscillators
File Size177KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet View All

LTC6930CDCB-7.37-TRPBF Overview

32.768kHz to 8.192MHz Precision μPower Oscillators

LTC6930-X.XX
32.768kHz to 8.192MHz
Precision µPower Oscillators
FEATURES
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n
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n
n
n
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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 ultra-low power operation while maintain-
ing 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 and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents including
6342817, 6614313.
n
n
Frequency Error <0.09% Max at 25°C
Startup 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: 7.373800MHz ÷ 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)
–40°C to 125°C Operating Temperature Range
Tiny 2mm
×
3mm DFN or MS8 Package
APPLICATIONS
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Digitally Controlled Oscillator
Microprocessor Clock
Power Supply Clock
Portable and Battery Operated Devices
TYPICAL APPLICATION
4MHz Micropower Clock Generator
V
+
= 1.7V TO 5.5V
I
S
= 325μA AT 3V
DC
Typical Frequency Error Distribution
70
T
A
= 25°C
V
+
= 3V
60 DIV = 0
1045 UNITS
50
UNITS
40
30
20
10
0
–0.10
0.1μF
V
+
V
+
DIVA
OUT
LTC6930-8.00
DIVB
DIVC
GND
GND
4MHz
6930 TA01a
–0.05
0
0.05
FREQUENCY ERROR (%)
0.10
6930 TA01b
6930fa
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