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零件编号 | NB2669A | ||
描述 | Reduced EMI Clock Synthesizer | ||
制造商 | ON Semiconductor | ||
LOGO | |||
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NB2669A
Low Power, Reduced EMI
Clock Synthesizer
The NB2669A is a versatile spread spectrum frequency modulator
designed specifically for a wide range of clock frequencies. The
NB2669A reduces ElectroMagnetic Interference (EMI) at the clock
source, allowing system wide reduction of EMI of all clock dependent
signals. The NB2669A allows significant system cost savings by
reducing the number of circuit board layers, ferrite beads and
shielding that are traditionally required to pass EMI regulations.
The NB2669A uses the most efficient and optimized modulation
profile approved by the FCC and is implemented by using a
proprietary all digital method.
The NB2669A modulates the output of a single PLL in order to
“spread” the bandwidth of a synthesized clock, and more importantly,
decreases the peak amplitudes of its harmonics. This results in
significantly lower system EMI compared to the typical narrow band
signal produced by oscillators and most frequency generators.
Lowering EMI by increasing a signal’s bandwidth is called ‘spread
spectrum clock generation’.
The NB2669A is targeted towards all portable devices with very
low power requirements like MP3 players and digital still cameras.
Features
• Generates an EMI Optimized Clocking Signal at the Output
• Integrated Loop Filter Components
• Operates with a 3.3 V / 2.5 V Supply
• Operating Current less than 4.0 mA
• Low Power CMOS Design
• Input Frequency Range: 6.0 MHz to 12 MHz for 2.5 V
Input Frequency Range: 6.0 MHz to 13 MHz for 3.3 V
• Generates a 1X Low EMI Spread Spectrum clock of the Input
Frequency
• Frequency Deviation "1% @ 10 MHz
• Available in TSOP−6 Package (TSOT−23−6)
• Pb−Free Package is Available
http://onsemi.com
MARKING
DIAGRAM*
6
1
TSOP−6
(TSOT−23−6)
SN SUFFIX
CASE 318G
E02AYWG
G
1
E02 = Specific Device Code
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
*For additional marking information, refer to
Application Note AND8002/D.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
December, 2006 − Rev. 3
1
Publication Order Number:
NB2669A/D
NB2669A
PACKAGE DIMENSIONS
D
65 4
HE
12 3
E
b
e
0.05 (0.002)
A1
A
TSOP−6
CASE 318G−02
ISSUE S
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD
THICKNESS IS THE MINIMUM THICKNESS OF
BASE MATERIAL.
4. DIMENSIONS A AND B DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS, OR GATE
BURRS.
q
c
L
MILLIMETERS
DIM MIN
NOM MAX
A 0.90
1.00
1.10
A1 0.01
0.06
0.10
b 0.25 0.38 0.50
c 0.10 0.18 0.26
D 2.90
3.00
3.10
E 1.30 1.50 1.70
e 0.85 0.95 1.05
L 0.20 0.40 0.60
H E 2.50 2.75 3.00
q 0°
− 10°
MIN
0.035
0.001
0.010
0.004
0.114
0.051
0.034
0.008
0.099
0°
INCHES
NOM
0.039
0.002
0.014
0.007
0.118
0.059
0.037
0.016
0.108
−
MAX
0.043
0.004
0.020
0.010
0.122
0.067
0.041
0.024
0.118
10°
SOLDERING FOOTPRINT*
2.4
0.094
1.9
0.075
0.95
0.037
0.95
0.037
0.7
0.028
1.0
0.039
ǒ ǓSCALE 10:1
mm
inches
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
This product utilizes US Patent #6,646,463 Impedance Emulator Patent issued to Alliance Semiconductor, Dated 11−11−2003.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: [email protected]
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5773−3850
http://onsemi.com
8
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
NB2669A/D
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页数 | 8 页 | ||
下载 | [ NB2669A.PDF 数据手册 ] |
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