LTC6907CS6 Linear Technology, LTC6907CS6 Datasheet

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LTC6907CS6

Manufacturer Part Number
LTC6907CS6
Description
Manufacturer
Linear Technology
Type
Silicon Oscillatorr
Datasheet

Specifications of LTC6907CS6

Mounting Style
Surface Mount
Screening Level
Commercial
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:
LTC6907CS6
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC6907CS6#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC6907CS6#TRMPBF
Manufacturer:
LT
Quantity:
39
APPLICATIO S
FEATURES
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Supply Current: 36µA at 400kHz
1% Frequency Accuracy (from 0°C to 70°C)
Frequency Range: 40kHz to 4MHz
One Resistor Sets the Oscillator Frequency
–40°C to 125°C Operating Temperature Range
Start-Up Time Under 200µs at 4MHz
First Cycle After Power-Up is Accurate
150Ω CMOS Output Driver
Low Profile (1mm) SOT-23 (ThinSOT
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
3V TO 3.6V
÷10
÷3
÷1
0.1µF
Micropower Clock Generator
U
V
GND
DIV
+
LTC6907
GRD
OUT
SET
40kHz TO 4MHz
U
R
50k TO 500k
6907 TA01
SET
TM
) Package
Micropower, 40kHz to 4MHz
DESCRIPTIO
The LTC
is versatile, compact and easy to use. Micropower opera-
tion benefits portable and battery-powered equipment. At
400kHz, the LTC6907 consumes 36µA on a 3V supply.
A single resistor programs the oscillator frequency over a
10:1 range with better than 0.65% initial accuracy. The
output frequency can be divided by 1, 3 or 10 to span a
100:1 total frequency range, 40kHz to 4MHz.
The LTC6907 is easily programmed according to this
simple formula:
The LTC6907 is available in the 6-lead SOT-23 (ThinSOT)
package.
Contact LTC Marketing for a version of the part with a
shutdown feature or lower frequency operation.
ƒ
OUT
=
®
6907 is a precision programmable oscillator that
4
1000
100
MHz
10
N
Resistor Set Oscillator
Typical Supply Current vs Frequency
10
C
T = 25°C
LOAD
⎝ ⎜
= 5pF
R
U
OUTPUT FREQUENCY (kHz)
50
SET
3.3V, –10
100
k
⎠ ⎟
:
,
N
3.3V, –3 :
=
1000
3.3V, –1 :
10
3
1
,
,
,
in SOT-23
DIV Pi i n V
DIV Pin
DIV Pin GND
6907 TA02
LTC6907
10000
=
=
=
Open
+
6907fa
1

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LTC6907CS6 Summary of contents

Page 1

... High Shock and Vibration Environments ■ Portable and Battery-Powered Equipment ■ PDAs and Cellular Phones , 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. U TYPICAL APPLICATIO ...

Page 2

... OUT + Pin 3.6V Pin ORDER PART NUMBER + LTC6907CS6 GRD LTC6907IS6 4 SET LTC6907HS6 S6 PART MARKING* = 200°C/W LTBTX http://www.linear.com/leadfree/ + unless otherwise noted. MIN TYP MAX UNITS ±0.25 ±0.65 ±1 ● ±1.3 ● ● 50 500 ±0.005 ● 0.06 0.12 ...

Page 3

... Note 8: Consult the Applications Information section for operation with supplies higher than 3.6V. Note 9: Long term drift on silicon oscillators is primarily due to the OUT movement of ions and impurities within the silicon and is tested at 30°C under otherwise nominal operating conditions. Long term drift is specified as ppm/√ ...

Page 4

LTC6907 W U TYPICAL PERFOR A CE CHARACTERISTICS Typical Frequency Error vs Power Supply Voltage 0.060 25° 5pF LOAD 0.040% 0.020% 0.000% –0.020% –0.040 50k SET R = 500k SET –0.060% 3 3.2 3.3 ...

Page 5

CTIO S OUT (Pin 1): Oscillator Output. The OUT pin swings from + GND to V with an output resistance of approximately 150Ω. For micropower operation, the load resistance must be kept as high as ...

Page 6

LTC6907 TEST CIRCUIT SUPPLY VOLTAGE 0.1µ EQUIVALE T I PUT A D OUTPUT CIRCUITS + V 6 20Ω 800pF GND 2 6907 F02 + Figure 2. V Pin + V 6 DIV 3 GND 2 Figure 5. ...

Page 7

THEORY OF OPERATIO The LTC6907 is a precision, resistor programmable oscil- lator (see Block Diagram). It generates a square wave at the OUT pin with a period directly proportional to the value of an external resistor feedback ...

Page 8

LTC6907 U U APPLICATIO S I FOR ATIO Selecting R and the Divider Ratio SET The LTC6907 contains a master oscillator followed by a digital divider (see Block Diagram). R master oscillator frequency and the three level DIV pin sets ...

Page 9

U U APPLICATIO S I FOR ATIO 1000 C = 5pF LOAD T = 25°C 3.3V, –1 : 3.3V, –3 : 3.3V, –10 : 100 10 10 100 1000 OUTPUT FREQUENCY (kHz) Figure 9. Supply Current vs Frequency over DIV ...

Page 10

LTC6907 U U APPLICATIO S I FOR ATIO Alternative Methods for Setting the Output Frequency Any means of sinking current from the SET pin will control the output frequency of the LTC6907. Equation 2 (re- peated below) gives the fundamental ...

Page 11

... DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U ...

Page 12

... LPB OUT R32 51.1k 11 BPA BPB 10 HPA/NA HPB/NB R22 20k SINE OSC INV A INV 249k H1 R 51.1k L1 6907 TA06 ( ) f OSC • SPI Interface LT 0506 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 2MHz WITH ±2.5% RANGE R A 97. 6907 TA04 6907fa ...

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