ONSEMI ASM3I2669AF-06OR

ASM3P2669A
Peak EMI
Reducing Solution
Features
• Generates a 1X low EMI spread spectrum clock of
the input frequency.
• Integrated loop filter components.
system cost savings by reducing the number of circuit
board layers, ferrite beads and shielding that are
traditionally required to pass EMI regulations.
The ASM3P2669A uses the most efficient and optimized
modulation profile approved by the FCC and is
implemented by using a proprietary all digital method.
• Operates with a 3.3V / 2.5V supply.
• Operating current less than 4mA.
• CMOS design.
• Input frequency range: 6MHz to 12MHz for 2.5V
6MHz to 13MHz for 3.3V
• Frequency deviation: ±1% @ 10MHz
• 6L-TSOP (6L-TSOT-23)
Product Description
The ASM3P2669A is a versatile spread spectrum
frequency modulator designed specifically for a wide
range of clock frequencies. The ASM3P2669A reduces
electromagnetic interference (EMI) at the clock source,
allowing system wide reduction of EMI of all clock
dependent signals. The ASM3P2669A allows significant
The ASM3P2669A 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.’
Application
The ASM3P2669A is targeted towards all portable
devices like MP3 players and digital still cameras.
Block Diagram
VDD
PD
PLL
Modulation
CLKIN
Frequency
Divider
Feedback
Divider
Phase
Detector
Loop
Filter
VCO
Output
Divider
ModOUT
VSS
©2010 SCILLC. All rights reserved.
JANUARY 2010 – Rev. 2
Publication Order Number:
ASM3P2669/D
ASM3P2669A
Pin Configuration (6L- TSOP Package)
PD 1
NC 2
ASM3P2669A
CLKIN 3
6
VSS
5
ModOUT
4
VDD
Pin Description
Pin#
Pin Name
1
Type
PD
Description
I
Power-down control pin. Pull low to enable power-down mode. Connect to VDD if not
used.
2
NC
-
No connect.
3
CLKIN
I
External reference clock input.
4
VDD
P
Power supply for the entire chip.
5
ModOUT
O
Spread spectrum clock output.
6
VSS
P
Ground connection.
Specifications
VDD (V)
Frequency Range (MHz)
2.5
6-12
3.3
6-13
Absolute Maximum Ratings
Symbol
VDD, VIN
TSTG
Modulation Rate
FIN/256
Parameter
Rating
Unit
Voltage on any pin with respect to Ground
-0.5 to +4.6
V
Storage temperature
-65 to +125
°C
Ts
Max. Soldering Temperature (10 sec)
260
°C
TJ
Junction Temperature
150
°C
2
KV
TDV
Static Discharge Voltage
(As per JEDEC STD22- A114-B)
Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect
device reliability.
Operating Conditions
Parameter
VDD
Description
Supply Voltage
Min
Max
Unit
2.375
3.6
V
-40
+85
°C
Load Capacitance
15
pF
Input Capacitance
7
pF
TA
Operating Temperature (Ambient Temperature)
CL
CIN
Rev. 2 | Page 2 of 7 | www.onsemi.com
ASM3P2669A
DC Electrical Characteristics for 2.5V Supply
Symbol
Parameter
VIL
Min
Typ
Max
Unit
V
Input low voltage
VSS-0.3
0.8
VIH
Input high voltage
2.0
VDD+0.3
V
IIL
Input low current
-35
µA
IIH
Input high current
35
µA
VOL
Output low voltage (VDD = 2.5 V, IOL = 8mA)
0.6
V
VOH
Output high voltage (VDD = 2.5 V, IOH = 8mA)
IDD
Static supply current
ICC
Dynamic supply current (Unloaded Output)
VDD
tON
ZOUT
1.8
V
1
Operating voltage
2.375
Power-up time (first locked cycle after power-up)
10
uA
2
2.5
mA
2.5
2.625
V
5
mS
2
Output impedance
Ω
40
Notes: 1. XIN / CLKIN pin and PD pin are pulled low.
2. VDD and XIN / CLKIN input are stable, PD pin is made high from low.
AC Electrical Characteristics for 2.5V Supply
Symbol
CLKIN
ModOUT
fd
Parameter
Typ
Max
Unit
Input frequency
6
12
MHz
Output frequency
6
12
MHz
Frequency Deviation
1
tLH
Min
CLKIN = 6MHz
±1.25
CLKIN = 10MHz
±1
CLKIN = 12MHz
±0.9
%
Output Rise time (measured from 0.7V to 1.7V)
0.9
1.7
2.5
nS
Output Fall time (measured from 1.7V to 0.7V)
0.6
1
1.5
nS
tD
Output Duty Cycle
45
50
55
%
tJC
Cycle-to-Cycle Jitter
±250
±400
pS
tHL
1
Note: 1. tLH and tHL are measured into a capacitive load of 15pF.
Rev. 2 | Page 3 of 7 | www.onsemi.com
ASM3P2669A
DC Electrical Characteristics for 3.3V Supply
Symbol
Parameter
Min
Typ
Max
Unit
V
VIL
Input low voltage
VSS-0.3
0.8
VIH
Input high voltage
2.0
VDD+0.3
V
IIL
Input low current
-35
µA
IIH
Input high current
35
µA
VOL
Output low voltage (VDD = 3.3 V, IOL = 8mA)
0.4
V
VOH
Output high voltage (VDD = 3.3 V, IOH = 8mA)
-
V
IDD
Static supply current
ICC
Dynamic supply current (Unloaded Output)
VDD
tON
ZOUT
2.5
1
Operating voltage
2.7
Power-up time (first locked cycle after power-up)
10
uA
2.5
3
mA
3.3
3.6
V
5
mS
2
Output impedance
Ω
35
Notes: 1. XIN / CLKIN pin and PD pin are pulled low.
2. VDD and XIN / CLKIN input are stable, PD pin is made high from low.
AC Electrical Characteristics for 3.3V Supply
Symbol
CLKIN
ModOUT
fd
Parameter
Typ
Max
Unit
Input frequency
6
13
MHz
Output frequency
6
13
MHz
Frequency Deviation
1
tLH
Min
CLKIN = 6MHz
±1.25
CLKIN = 10MHz
±1
CLKIN = 13MHz
±0.9
%
Output Rise time (measured from 0.8V to 2.0V)
0.7
1.3
1.7
nS
Output Fall time (measured at 2.0V to 0.8V)
0.6
0.9
1.3
nS
tD
Output Duty Cycle
45
50
55
%
tJC
Cycle - Cycle Jitter
±300
±450
pS
tHL
1
Note: 1. tLH and tHL are measured into a capacitive load of 15pF.
Note: All parameters are at an Extended Industrial temperature range unless otherwise stated.
Modulation Profile
Rev. 2 | Page 4 of 7 | www.onsemi.com
ASM3P2669A
Typical Application Schematic
VDD
C1
0.1µF
C2
2.2µF
VDD
ASM3P2669A
Rs
ModOUT
VSS
Rev. 2 | Page 5 of 7 | www.onsemi.com
ModOUT Clock
ASM3P2669A
Package Information
6L-TSOP Package
Dimensions
Symbol
Inches
Min
A
Max
Millimeters
Min
Max
0.04
1.00
A1
0.00
0.004
0.00
0.10
A2
0.033
0.036
0.84
0.90
b
0.012
0.02
0.30
0.50
H
0.005 BSC
0.127 BSC
D
0.114 BSC
2.90 BSC
B
0.06 BSC
1.60 BSC
e
0.0374 BSC
0.950 BSC
C
0.11 BSC
2.80 BSC
L
0.0118
0.02
0.30
0.50
θ
0°
4°
0°
4°
Rev. 2 | Page 6 of 7 | www.onsemi.com
ASM3P2669A
Ordering Information
Part Number
Marking
ASM3P2669AF-06OR
H4L
ASM3I2669AF-06OR
H5L
Package Type
Temperature
6L-TSOP (6L-TSOT-23), TAPE & REEL,
Pb Free
6L-TSOP (6L-TSOT-23), TAPE & REEL,
Pb Free
0°C to +70°C
-40°C to +85°C
A “microdot” placed at the end of last row of marking or just below the last row toward the center of package indicates Pb-free.
Licensed under US Patent #5,488,627 and #5,631,921.
Note: This product utilizes US Patent #6,646,463 Impedance Emulator Patent issued to PulseCore 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. U.S Patent Pending; Timing-Safe
and Active Bead are trademarks of PulseCore Semiconductor, a wholly owned subsidiary of ON Semiconductor. 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
ON Semiconductor Website:
www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your
local Sales Representative