View PCS3P2191A2_4720241.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

May 2008 rev 0.3 Spread Spectrum Clock Generator
Features
* * * * *
PCS3P2191A
output. PCS3P2191A offers seven selectable centre spread options of 0.5% to 2.0%, and a no spread option. (Refer Spread reduces Deviation Selection Table). PCS3P2191A electromagnetic interference
Generates four 4x low EMI spread spectrum clocks Input frequency: 10MHz - 25MHz Output frequency: 40MHz - 100MHz Internal loop filter minimizes external components and board space Selectable Centre Spread frequency deviation: 0.5%, 0.75%, 1.0%, 1.25%, 1.5%, 1.75% 2.0%
(EMI) at the clock source, allowing system wide reduction of EMI of all clock dependent signals. The PCS3P2191A 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 PCS3P2191A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method. The Device is available in 16 Pin TSSOP package, in Commercial and Industrial temperature range.
* * * *
Supply Voltage :3.3V 0.3V Commercial and Industrial temperature range 16-pin TSSOP Package Advanced low power CMOS process
Product Description
PCS3P2191A is a versatile spread spectrum frequency modulator that generates four low EMI 4x clocks at the
Application
PCS3P2191A is targetted for LCD panel application
Block Diagram
S2 S1 S0 VDD 2
PLL Modulation CLKIN / XIN XOUT
Crystal Oscillator
Frequency Divider Feedback Divider
Phase Detector
Loop Filter
VCO
Output Divider CLK[1:4] 4
5
GND
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.
May 2008 rev 0.3
Pin Configuration
PCS3P2191A
VDD GND S2 GND CLK1 CLK2 GND XIN/CLKIN
1 2 3 4 5 6 7 8 16Pin TSSOP
16 15 14
VDD S0 S1 GND CLK4 CLK3 GND XOUT
PCS3P2191A
13 12 11 10 9
Pin Description Pin#
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Pin Name
VDD GND S2 GND CLK1 CLK2 GND XIN/CLKIN XOUT GND CLK3 CLK4 GND S1 S0 VDD
Type
P P I P O O P I O P O O P I I P
Description
Power Supply Voltage Pin. Connect to +3.3V. Ground Connection. Connect to system ground. Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. Ground Connection. Connect to system ground. Low EMI 4x clock output. Low EMI 4x clock output. Ground Connection. Connect to system ground. Crystal connection or external reference clock input Crystal connection. If using an external reference, this pin must be left unconnected. Ground Connection. Connect to system ground. Low EMI 4x clock output. Low EMI 4x clock output. Ground Connection. Connect to system ground. 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. Power Supply Voltage Pin. Connect to +3.3V.
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
2 of 8
May 2008 rev 0.3
Spread Deviation Selection Table
(For an Input CLK=15MHz)
PCS3P2191A
S2
0 0 0 0 1 1 1 1
S1
0 0 1 1 0 0 1 1
S0
0 1 0 1 0 1 0 1
Deviation ( %)
OFF 0.5 0.75 1.0 1.25 1.5 1.75 2.0
Absolute Maximum Ratings Symbol
VDD VIN VOUT TSTG Ts TJ TDV
Parameter
Supply Voltage pin with respect to Ground Input Voltage pin with respect to Ground Output Voltage pin with respect to Ground Storage temperature Max. Soldering Temperature (10 sec) Junction Temperature Static Discharge Voltage(As per JEDEC STD22- A114-B)
Rating
-0.5 to +4.6 VSS-0.5 to VDD+0.5 VSS-0.5 to VDD+0.5 -55 to +125 260 150 2
Unit
V V V C C C 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.
Recommended Operating Conditions Parameter
VDD TA CL CIN Operating Voltage Operating Temperature Load Capacitance Input Capacitance 5
Description
Min
3.0 -40
Typ
3.3
Max
3.6 +85 15
Unit
V C pF pF
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
3 of 8
May 2008 rev 0.3
DC Electrical Characteristics (TA=-40C to +85C, VDD =3.3V 0.3V) Symbol
VIL VIH IIL IIH IIL IIH VOL VOH ICC IDD VDD tON ZOUT CIN CL Input low voltage Input high voltage Input low current Input high current Input low current Input high current Output low voltage Output high voltage (XIN / CLKIN) (S0:S1:S2) IOL = 12mA IOH = -12mA VSS 2.4 8 3.0 15
PCS3P2191A
Parameter
Min
VSS - 0.3 2.0
Typ
Max
0.8 VDD+ 0.3 -35 +35 -50 +50 0.4 VDD 26 8 3.6 5
Unit
V V A A V V mA mA V mS pF pF
Dynamic supply current ( Unloaded Outputs) Static supply current standby mode* Operating voltage Power up time (first locked clock cycle after power up)** Clock output impedance Input Capacitance Load Capacitance
3.3 27 5
15
*CLKIN pulled Low **VDD and CLKIN inputs are stable
AC Electrical Characteristics (TA=-40C to +85C, VDD =3.3V 0.3V) Symbol
XIN/ CLKIN CLKOUT FMOD tLH* tHL* tJC* tJP* tD*
Parameter
Input Clock frequency Output Clock frequency (Pin 5,6,11,12) Spread Spectrum Modulation Rate Output rise time ( Measured from 20% to 80% ) Output fall time ( Measured from 80% to 20% ) Output frequency Synthesis error (With SSOFF) Cycle to Cycle Jitter Period Jitter (With SSOFF) Output duty cycle
Min
10 40 26
Typ
15 60 39 1.5 1.0 0 250 150
Max
25 100 65 2 1.5 325 200 55
Unit
MHz MHz KHz nS nS ppm pS %
45
50
*tLH and tHL are measured with a capacitive load of 15pF
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
4 of 8
May 2008 rev 0.3
Typical Crystal Oscillator Circuit
PCS3P2191A
Crystal
R1 = 510
C1
C2
Typical Crystal Specifications
Fundamental AT cut parallel resonant crystal Nominal frequency Frequency tolerance Operating temperature range Load capacitance Shunt capacitance ESR 15MHz 50 ppm or better at 25C -45C to +90C 18pF 7pF maximum 25
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
5 of 8
May 2008 rev 0.3
Package Information
PCS3P2191A
16-lead Thin Shrunk Small Outline Package (4.40-MM Body)
8 1
PIN 1 ID E H
9
16
A
Seating Plane L C
e D
A2
B
A1
D
Dimensions Symbol Min
A A1 A2 B C D E e H L 0.020 0 0.002 0.031 0.007 0.004 0.193 0.169 0.026 BSC 0.252 BSC 0.030 8 0.50 0
Inches Max
0.043 0.006 0.041 0.012 0.008 0.201 0.177 0.05 0.80 0.19 0.09 4.90 4.30
Millimeters Min Max
1.20 0.15 1.05 0.30 0.20 5.10 4.50 0.65 BSC 6.40 BSC 0.75 8
Spread Spectrum Clock Generator
Notice: The information in this document is subject to change without notice.
6 of 8
May 2008 rev 0.3
Ordering Code Part Number
PCS3P2191AG-16TT PCS3P2191AG-16TR PCS3P2191AF-16TT PCS3P2191AF-16TR PCS3I2191AG-16TT PCS3I2191AG-16TR PCS3I2191AF-16TT PCS3I2191AF-16TR
PCS3P2191A
Marking
3P2191AG 3P2191AG 3P2191AF 3P2191AF 3I2191AG 3I2191AG 3I2191AF 3I2191AF
Package Type
16-Pin TSSOP, TUBE, Green 16-Pin TSSOP, TAPE & REEL, Green 16-Pin TSSOP, TUBE, Pb Free 16-Pin TSSOP, TAPE & REEL, Pb Free 16-Pin TSSOP, TUBE, Green 16-Pin TSSOP, TAPE & REEL, Green 16-Pin TSSOP, TUBE, Pb Free 16-Pin TSSOP, TAPE & REEL, Pb Free
Temperature
Commercial Commercial Commercial Commercial Industrial Industrial Industrial Industrial
Device Ordering Information
PCS3P2191AG-16TR
R = Tape & Reel, T = Tube or Tray O = TSOT23 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 J=TSOT26 C=TDFN (2X2) COL
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.
7 of 8
May 2008 rev 0.3
PCS3P2191A
PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 Tel: 408-879-9077 Fax: 408-879-9018 www.pulsecoresemi.com
Copyright (c) PulseCore Semiconductor All Rights Reserved Part Number: PCS3P2191A Document Version: 0.3
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
(c) 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.
8 of 8

▲Up To Search▲

Price & Availability of PCS3P2191A2

	To Download PCS3P2191A2 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .