PULSECORE PCS3P2189A_1

PCS3P2189A
May 2008
rev 0.2
Spread Spectrum Clock Generator
Product Description
Features
•
PCS3P2189A is a versatile spread spectrum frequency
Generates a 4X low EMI spread spectrum clock of
modulator that generates a low EMI 4x clock at the
the input frequency.
output. PCS3P2189A offers four
•
Input frequency: 10MHz - 25MHz
•
Output frequency: 40MHz - 100MHz
•
Internal loop filter minimizes external components
options
Spread
Deviation
of
±0.5%,±1.0%,±1.5%,±2.0%,(Refer
Selection
Tabnle).
PCS3P2189A
reduces electromagnetic interference (EMI) at the clock
and board space.
•
spread
selectable centre
source, allowing system wide reduction of EMI of
Selectable Centre Spread frequency deviation:
clock
±0.5%, ± 1.0%, ± 1.5%, ± 2.0%
all
dependent signals. The PCS3P2189A allows
significant system cost savings by reducing the number
•
Supply Voltage :3.3V ± 0.3V
•
Commercial and Industrial temperature range
•
8-pin TSSOP Package
PCS3P2189A has spread spectrum ON/OFF option.
•
Low power CMOS process
The PCS3P2189A uses the most efficient and optimized
of circuit board layers, ferrite beads, and shielding that
are traditionally required to pass EMI regulations.
modulation profile approved by the FCC and is
implemented in a proprietary all digital method.
Application
PCS3P2189A is targetted for LCD panel application
Block Diagram
S0
S1
SSON
VDD
PLL
Modulation
CLKIN / XIN
XOUT
Crystal
Oscillator
Frequency
Divider
Feedback
Divider
Phase
Detector
Loop
Filter
VCO
Output
Divider
ModOUT
VSS
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018
www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.
PCS3P2189A
May 2008
rev 0.2
Pin Configuration
8
VDD
7
ModOUT
SSON 3
6
VSS
S1 4
5
S0
CLKIN / XIN 1
XOUT 2
PCS3P2189A
Pin Description
Pin#
Pin Name
Type
1
CLKIN / XIN
I
Description
Crystal connection or External reference Clock Input
Crystal connection. If using an external reference, this pin must be left
unconnected.
Modulation enables pin. When HIGH enables spread spectrum modulation. Has an
Internal pull up resistor
Spread range select. Digital logic input used to select frequency deviation
(Refer Spread Deviation Table). This pin has an internal pull-up resistor.
Spread range select. Digital logic input used to select frequency deviation
(Refer Spread Deviation Table). This pin has an internal pull-up resistor.
2
XOUT
O
3
SSON
I
4
S1
I
5
S0
O
6
VSS
P
Ground Connection. Connect to system ground.
7
ModOUT
O
Low EMI 4x clock output.
8
VDD
P
Power Supply Voltage Pin. Connect to +3.3V.
Spread Deviation Selection Table
(For an Input CLK=15MHz)
S1
S0
Deviation (± %)
0
0
0.5
0
1
1.0
1
0
1.5
1
1
2.0
Modulation Enable Setting Table
SSON
Modulation
L
No Modulation
H
Modulation
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
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PCS3P2189A
May 2008
rev 0.2
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
-0.5 to +4.6
V
Input Voltage pin with respect to Ground
VSS-0.5 to VDD+0.5
V
VOUT
Output Voltage pin with respect to Ground
VSS-0.5 to VDD+0.5
V
TSTG
Storage temperature
VDD
Supply Voltage pin with respect to Ground
VIN
-55 to +125
°C
Ts
Max. Soldering Temperature (10 sec)
260
°C
TJ
Junction Temperature
150
°C
TDV
Static Discharge Voltage(As per JEDEC STD22- A114-B)
2
KV
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.
DC Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Unit
VIL
Input low voltage
VSS – 0.3
0.8
V
VIH
Input high voltage
2.0
VDD+ 0.3
V
IIL
Input low current
-50
µA
IIH
Input high current
+50
µA
VOL
Output low voltage
IOL = 4mA
VSS
0.4
V
VOH
Output high voltage
IOH = -4mA
2.4
VDD
V
ICC
Dynamic supply current (Unloaded Output)
20
mA
IDD
Static supply current standby, CLKIN/XIN pulled LOW
6
mA
3.3
3.6
V
Power up time (first locked clock cycle after power up)
2
5
mS
Clock output impedance
50
Ω
CIN
Input Capacitance
5
pF
CL
Load Capacitance
VDD
tON
ZOUT
Operating voltage
7
3.0
14
15
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
pF
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PCS3P2189A
May 2008
rev 0.2
AC Electrical Characteristics
Symbol
XIN/CLKIN
ModOUT
Parameter
Min
Typ
Max
Unit
Input Clock frequency
10
15
25
MHz
Output Modulated Clock frequency
40
60
100
MHz
MF
Modulation Frequency
26
39
65
KHz
tLH*
Output rise time ( Measured from 20% to 80% )
2
2.5
nS
tHL*
Output fall time ( Measured from 80% to 20% )
1.5
2
nS
tJC
Cycle to Cycle Jitter
±250
±325
tJP
Period Jitter (With SSOFF)
±200
±250
tD
Output duty cycle
50
55
45
pS
%
*tLH and tHL are measured with a capacitive load of 15pF
Typical Crystal Oscillator Circuit
R1 = 510Ω
C1
C2
Typical Crystal Specifications
Fundamental AT cut parallel resonant crystal
Nominal frequency
15MHz
Frequency tolerance
± 50 ppm or better at 25°C
Operating temperature range
-25°C to +85°C
Storage temperature
-40°C to +85°C
Load capacitance
18pF
Shunt capacitance
7pF maximum
ESR
25Ω
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
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PCS3P2189A
May 2008
rev 0.2
Package Information
Mechanical Package Outline 8-Pin TSSOP
H
E
D
A2
A
C
θ
e
A1
L
B
Dimensions
Symbol
Inches
Min
Millimeters
Max
A
Min
Max
0.043
1.10
A1
0.002
0.006
0.05
0.15
A2
0.033
0.037
0.85
0.95
B
0.008
0.012
0.19
0.30
c
0.004
0.008
0.09
0.20
D
0.114
0.122
2.90
3.10
E
0.169
0.177
4.30
4.50
e
0.026 BSC
0.65 BSC
H
0.252 BSC
6.40 BSC
L
0.020
0.028
0.50
0.70
θ
0°
8°
0°
8°
Note: Controlling dimensions are millimeters
TSSOP – 0.034 grams unit weight
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
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PCS3P2189A
May 2008
rev 0.2
Ordering Code
Part Number
Marking
Package Type
Temperature
PCS3P2189AG-08TT
3P2189AG
8-Pin TSSOP, TUBE, Green
Commercial
PCS3P2189AG-08TR
3P2189AG
8-Pin TSSOP, TAPE & REEL, Green
Commercial
PCS3I2189AG-08TT
3I2189AG
8-Pin TSSOP, TUBE, Green
Industrial
PCS3I2189AG-08TR
3I2189AG
8-Pin TSSOP, TAPE & REEL, Green
Industrial
Device Ordering Information
P C S 3 P 2 1 8 9 A G - 0 8 T R
R = Tape & Reel, T = Tube or Tray
O = SOT
S = SOIC
T = TSSOP
A = SSOP
V = TVSOP
B = BGA
Q = QFN
U = MSOP
E = TQFP
L = LQFP
U = MSOP
P = PDIP
D = QSOP
X = SC-70
DEVICE PIN COUNT
G = GREEN PACKAGE, LEAD FREE, and RoHS
PART NUMBER
X= Automotive
I= Industrial
P or n/c = Commercial
(-40C to +125C) (-40C to +85C)
(0C to +70C)
1 = Clock Generator
2 = Non PLL based
3 = EMI Reduction
4 = DDR support products
5 = STD Zero Delay Buffer
6 = Power Management
7 = Power Management
8 = Power Management
9 = Hi Performance
0 = Reserved
PulseCore Semiconductor Mixed Signal Product
Licensed under U.S Patent Nos 5,488,627 and 5,631,921
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
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PCS3P2189A
May 2008
rev 0.2
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200
Campbell, CA 95008
Tel: 408-879-9077
Fax: 408-879-9018
www.pulsecoresemi.com
Copyright © PulseCore Semiconductor
All Rights Reserved
Part Number: PCS3P2189A
Document Version: 0.2
Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003
Many PulseCore Semiconductor products are protected by issued patents or by applications for patent
© Copyright 2006 PulseCore Semiconductor Corporation. All rights reserved. Our logo and name are trademarks or registered trademarks
of PulseCore Semiconductor. All other brand and product names may be the trademarks of their respective companies. PulseCore reserves
the right to make changes to this document and its products at any time without notice. PulseCore assumes no responsibility for any errors
that may appear in this document. The data contained herein represents PulseCore’s best data and/or estimates at the time of issuance.
PulseCore reserves the right to change or correct this data at any time, without notice. If the product described herein is under development,
significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive
information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or
customer. PulseCore does not assume any responsibility or liability arising out of the application or use of any product described herein, and
disclaims any express or implied warranties related to the sale and/or use of PulseCore products including liability or warranties related to
fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agreed to in
PulseCore’s Terms and Conditions of Sale (which are available from PulseCore). All sales of PulseCore products are made exclusively
according to PulseCore’s Terms and Conditions of Sale. The purchase of products from PulseCore does not convey a license under any
patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of PulseCore or third parties. PulseCore
does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be
expected to result in significant injury to the user, and the inclusion of PulseCore products in such life-supporting systems implies that the
manufacturer assumes all risk of such use and agrees to indemnify PulseCore against all claims arising from such use.
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
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