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LTC6905MPS5#TRMPBF

Description
振荡器 - 硅 IC 17MHz ~ 170MHz TSOT-23-5
Categorysemiconductor    clock and timing   
File Size163KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Download user manual Parametric View All

LTC6905MPS5#TRMPBF Overview

振荡器 - 硅 IC 17MHz ~ 170MHz TSOT-23-5

LTC6905MPS5#TRMPBF Parametric

Parameter NameAttribute value
category
MakerADI
series-
Package卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带
typeOscillator - Silicon
count-
frequency17MHz ~ 170MHz
Voltage - Power supply2.7V ~ 5.5V
Current - power supply14 mA
Operating temperature-55°C ~ 125°C
Package/casingSOT-23-5 slim type, TSOT-23-5
Supplier device packagingTSOT-23-5
Installation typesurface mount type
Basic product numberLTC6905
LTC6905
17MHz to 170MHz
Resistor Set SOT-23 Oscillator
FEATURES
n
n
n
n
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n
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n
DESCRIPTION
The LTC
®
6905 precision, programmable silicon oscilla-
tor is easy to use and occupies very little board space. It
requires only a single resistor to set the output frequency
from 17MHz to 170MHz with a typical frequency error of
0.5% or less.
The LTC6905 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. Operation is simple: A
single resistor, R
SET
, between 10k to 25k is used to set
the frequency, and an internal three-state divider (DIV
input) allows for division of the master clock by 1, 2 or 4,
providing three frequencies for each R
SET
value.
The LTC6905 features a proprietary feedback loop that
linearizes the relationship between R
SET
and frequency,
eliminating the need for tables to calculate frequency. The
oscillator can be easily programmed using the simple
formula outlined below:
f
OSC
,
1 DIV Pin
=
V
+
168.5MHz • 10k
Ω
1
=
+
1.5MHz
• , N
=
2, DIV Pin
=
Open
N
R
SET
4, DIV Pin
=
GND
One External Resistor Sets the Frequency
Fast Start-Up Time: 100μs Typical
Frequency Range: 17MHz to 170MHz
Frequency Error ±0.5% Typ 17MHz to 170MHz
(T
A
= 0°C to 70°C, Over All Settings)
±20ppm/°C Temperature Stability
Rise Time: 0.5ns, C
L
= 5pF
Timing Jitter: 7.2ps RMS at 170MHz
50% ±2.5% Duty Cycle
6mA Typical Supply Current, f
OSC
= 100MHz
CMOS Output Drives 500Ω Load (V
S
= 3V)
Operates from a Single 2.7V to 5.5V Supply
Low Profile (1mm) ThinSOT ™ Package
APPLICATIONS
n
n
n
n
High Frequency Precision Oscillator
High Speed Data Bus Clock
Fixed Crystal Oscillator Replacement
Ceramic Oscillator Replacement
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6614313, 6342817.
For higher accuracy, fixed frequency versions that
include an internal frequency-setting resistor, see the
LTC6905-XXX Series data sheet.
TYPICAL APPLICATION
Basic Connection
Typcial Distribution of Frequency Error, T
A
= 25°C
60
50
40
V
+
= 3V
R
SET
= 12k
DIV = 1
1
0.1μF
2
3
V
+
OUT
LTC6905
GND
SET
DIV
6905 TA01
5
5V
÷1
4
÷4
÷2
OPEN
UNITS
5V
17.225MHz ≤ f
OSC
≤ 170MHz
30
20
10
0
–0.5
10k ≤ R
SET
≤ 25k
–0.3
–0.1
0.1
% ERROR
0.3
0.5
6905 TA02
NOTE: RESISTOR, R
SET
, TOLERANCE WILL ADD
TO THE FREQUENCY ERROR
6905fd
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