LTC6906CS6 Linear Technology, LTC6906CS6 Datasheet

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LTC6906CS6

Manufacturer Part Number
LTC6906CS6
Description
Manufacturer
Linear Technology
Type
Silicon Oscillatorr
Datasheet

Specifications of LTC6906CS6

Mounting Style
Surface Mount
Screening Level
Industrial
Product Length (mm)
2.9mm
Product Depth (mm)
1.75mm
Product Height (mm)
0.9mm
Package / Case
TSOT-23
Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC6906CS6#PBF
Manufacturer:
LT
Quantity:
3 844
Part Number:
LTC6906CS6#PBF
Manufacturer:
LT
Quantity:
20 000
Part Number:
LTC6906CS6#TRMPBF
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
LTC6906CS6#TRPBF
Manufacturer:
LT/凌特
Quantity:
20 000
FEATURES
APPLICATIONS
TYPICAL APPLICATION
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
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.
Supply Current: 12µA at 100kHz
<0.65% Frequency Accuracy (from 0°C to 70°C)
Frequency Range: 10kHz to 1MHz
One Resistor Sets the Oscillator Frequency
Single Supply: 2.25V to 5.5V
–40°C to 125°C Operating Temperature Range
No Decoupling Capacitor Needed
Start-Up Time Under 200µs at 1MHz
First Cycle After Power-Up is Accurate
150Ω CMOS Output Driver
Low Profile (1mm) SOT-23 (ThinSOT™) Package
Low Cost Precision Programmable Oscillator
Rugged, Compact Micropower Replacement for
Crystal and Ceramic Oscillators
High Shock and Vibration Environments
Portable and Battery-Powered Equipment
PDAs and Cellular Phones
2.25V TO 3.6V
Micropower Clock Generator
3
1
10
NO DECOUPLING
CAPACITOR
NEEDED
V
GND
DIV
+
LTC6906
GRD
OUT
SET
10kHz TO 1MHz
R
100k TO 1M
6906 TA01
SET
Micropower, 10kHz to 1MHz
DESCRIPTION
The LTC
is versatile, compact and easy to use. Micropower opera-
tion benefits portable and battery-powered equipment. At
100kHz, the LTC6906 consumes 12µA on a 3.3V supply.
A single resistor programs the oscillator frequency over
a 10:1 range with better than 0.5% initial accuracy. The
output frequency can be divided by 1, 3 or 10 to span a
100:1 total frequency range, 10kHz to 1MHz.
The LTC6906 is easily programmed according to this
simple formula:
No decoupling capacitor is needed in most cases, yield-
ing an extremely compact solution occupying less than
20mm2. Contact LTC Marketing for a version of the part
with a shutdown feature or lower frequency operation.
The LTC6906 is available in the 6-lead SOT-23 (ThinSOT)
package.
ƒ
OUT
=
®
1MHz
6906 is a precision programmable oscillator that
N
50
40
20
90
80
70
60
30
10
0
Resistor Set Oscillator
Typical Supply Current vs Frequency
0
C
T
L
A
= 5pF
= 25C
R
200
100k
SET
400
FREQUENCY (kHz)
 , N =
V
+
= 3.6V
600
V
+
800
10,
1,
3,
= 2.25V
1000
in SOT-23
6906 TA01b
DIV Pin = V
DIV Pin = Open
DIV Pin = GND
LTC6906
1200
+
6906fb
1

Related parts for LTC6906CS6

LTC6906CS6 Summary of contents

Page 1

... Portable and Battery-Powered Equipment n PDAs and Cellular Phones n 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. TYPICAL APPLICATION Micropower Clock Generator NO DECOUPLING ...

Page 2

... LTC6906IS6#TRPBF LTC6906HS6#PBF LTC6906HS6#TRPBF LEAD BASED FINISH TAPE AND REEL LTC6906CS6 LTC6906CS6#TR LTC6906IS6 LTC6906IS6#TR LTC6906HS6 LTC6906HS6#TR Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER R Frequency-Setting Resistor Range SET ∆f/∆T Frequency Drift Over Temp (Note 3) ∆f/∆V Frequency Drift Over Supply (Note 3) Timing Jitter (Note 4) S Long-Term Stability of Output Frequency ...

Page 4

LTC6906 TYPICAL PERFORMANCE CHARACTERISTICS Typical Frequency Error vs Power Supply 0.50 0.40 0.30 0.20 0. SET 100k SET –0.10 –0.20 –0.30 –0.40 –0. SUPPLY VOLTAGE (V) 6906 G01 Typical Supply ...

Page 5

PIN FUNCTIONS OUT (Pin 1): Oscillator Output. The OUT pin swings from + GND to V with an output resis tance of approximately 150Ω. For micropower operation, the load re sistance must be kept as high as possible and the ...

Page 6

LTC6906 TEST CIRCUIT VOLTAGE EQUIVALENT INPUT AND OUTPUT CIRCUITS + 800pF GND 2 6906 F02 + Figure 2. V Pin + V 6 DIV 3 GND 2 Figure 5. DIV Pin 6 EQUIVALENT CIRCUIT OF OSCILLOSCOPE OR ...

Page 7

THEORY OF OPERATION The LTC6906 is a precision, resistor programmable oscilla- tor (see the Block Diagram). It generates a square wave at the OUT pin with a period directly proportional to the value of an external resistor ...

Page 8

LTC6906 APPLICATIONS INFORMATION Selecting R and the Divider Ratio SET The LTC6906 contains a master oscillator followed by a digital divider (see the Block Diagram). R the master oscillator frequency and the DIV pin sets the divider ratio, N. The ...

Page 9

APPLICATIONS INFORMATION Guarding Against PC Board Leakage The LTC6906 uses relatively large resistance values for R to minimize power consumption. For R SET SET pin current is typically only 0.65µA. Thus, only 0.65nA leaking into the SET pin causes a ...

Page 10

LTC6906 APPLICATIONS INFORMATION L S LTC6906 330nH + 3.3V V OUT GND GRD DIV SET R SET 100k 6906 F12 Figure 12. Test Circuit with an Inductive Power Supply 3 5pF LOAD C = 10pF ...

Page 11

APPLICATIONS INFORMATION + V 3.6V TO 5.5V DC 100 LTC6906 + V OUT 1F GND GRD DIV SET Figure 16. Using the LTC6906 at Higher Supply Voltages Alternative Methods for Setting the Output Frequency Any means of sinking current from ...

Page 12

LTC6906 TYPICAL APPLICATIONS Setting Frequency to 0.1% Resolution with Standard Resistors 10kHz TO 1MHz LTC6906 + 2.25V TO 3.6V V OUT GND GRD 10 3 DIV SET < THIN FILM R B 100k ...

Page 13

... Revised values in the Guarding Against PC Board Leakage section. Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 14

... FAX: (408) 434-0507 l COMMENTS Single Output, Greater Frequency Range Single Output, Greater Frequency Range 2 4-Phase Outputs Very Wide Frequency Range with Digital Programmability Single Output, Higher Frequency www.linear.com l 6906fb LT 1210 REV B • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2005 ...

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