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February 2007 rev 0.2
Low Cost Frequency Multiplier
Features
* * * * * * * * * * Generates 4X clocks of the Input Clock frequency Input clock frequency range from 20 MHz to 78 MHz Provides up to 312 MHz Output Clock frequency External loop filter Low Cycle-to-cycle jitter 3.3 V Operating Voltage TTL or CMOS compatible outputs Ultra-low power CMOS design Available in Commercial and Industrial temperature ranges Available in 8-pin SOIC and TSSOP Packages
P2384A
Product Description
The P2384A is a versatile frequency multiplier that is designed specifically as cost effective alternative to the high precision frequency oscillator. The P2384A can generate a 4X output clock of the input frequency that allows system cost savings by using an inexpensive crystal or resonator to achieve high frequency multiplication. The P2384A provides up to 312 MHz output clock frequency through the use of the Phase-Lock-Loop (PLL) technique which delivers low jitter and high precision synthesized clocks.
Applications
The P2384A is targeted towards the high frequency CAN OSC replacement market. systems. Applications include xDSL, routers, networking, PC peripherals, and embedded
Block Diagram
PDB FS0 LF
VDD
PLL Modulation XIN XOUT
Crystal Oscillator
Frequency divider Phase detector Feedback divider CLKOUT VCO Output divider
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.
February 2007 rev 0.2
Pin Configuration
XIN 1 XOUT
2 8
P2384A
VDD FS0 CLKOUT VSS
P2384A
7 6 5
PDB 3 LF 4
Pin Description Pin#
1 2 3 4 5 6 7 8
Pin Name
XIN XOUT PDB LF VSS CLKOUT FS0 VDD
Type
I O I I P O I P
Description
Crystal connection or external reference frequency input Crystal connection. If using an external reference, this pin must be left unconnected. Power-down control pin. Pull low to enable power-down mode. Connect directly to VDD in normal operation and if not used. External loop filter for the PLL. (See Loop Filter Selection Table for value.) Ground connection. Connect to system ground. Clock output. Digital logic input used to select Input frequency range. (See Input Frequency Selection.) This pin has an internal pull-up resistor. Connect to +3.3 V.
Input Frequency Selection FS0
0 1
Input (MHz)
20 to 38 39 to 78
Output Frequency Scaling (MHz)
80 to 152 156 to 312
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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February 2007 rev 0.2
Loop Filter Selection Table ( VDD 3.3 V )
Pin 4 LF C2 R1 C1
P2384A
Input (MHz)
20 21 - 22 23 - 24 25 - 26 27 - 28 29 - 30 31 - 32 33 - 34 35 - 36 37 - 38 39 - 42 43 - 46 47 - 50 51 - 54 55 - 58 59 - 62 63 - 66 67 - 70 71 - 74 75 - 78
FS0
0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1
C1(pF)
270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270 270
C2(pF)
100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000 100,000
R1 (ohms)
330 390 510 560 620 750 820 910 1,000 1,200 330 390 510 560 620 750 820 910 1,000 1,200
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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February 2007 rev 0.2
Output Clock Selection Example
P2384A
The P2384A can generate 4X Clock from the Input reference frequency. P2384A's internal crystal oscillator circuits allow the use of an inexpensive crystal or resonator to replace expensive CAN oscillators that are used in networking, PC peripherals, xDSL, and consumer applications for high frequency generation. Its input frequency range is optimized for operations from 20 MHz to 78 MHz, and its output frequency can deliver up to 312 MHz.
25 MHz
1 XIN 2 XOUT 3 PDB R1 C1 4 LF
VDD 8 FS0 7 CLKOUT 6 0.1F +3.3V Modulated 100 MHz
VSS 5 P2384A
C2
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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February 2007 rev 0.2
Absolute Maximum Ratings Symbol
VDD, VIN TSTG TA Ts TJ TDV Storage temperature Operating temperature Max. Soldering Temperature (10 sec) Junction Temperature Static Discharge Voltage (As per JEDEC STD 22- A114-B)
P2384A
Parameter
Voltage on any pin with respect to Ground
Rating
-0.5 to +4.6 -65 to +125 -40 to +85 260 150 2 V
Unit
C 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.
DC Electrical Characteristics Symbol
VIL VIH IIL IIH IXOL IXOH VOL VOH IDD ICC VDD tON ZOUT Input low voltage Input high voltage Input low current (Internal input pull-up resistor on FS0 and PDB) Input high current (Internal input pull-up resistor on FS0 and PDB) XOUT output low current XOUT output high current Output low voltage (VDD = 3.3 V, IOL = 20 mA) Output high voltage (VDD = 3.3 V, IOH = 20 mA) Static supply current* Typical dynamic supply current (25 pF scope probe loading) Operating voltage Power-up time Clock output impedance
Parameter
Min
VSS - 0.3 2.0 - - - - - 2.5 - - 3.0 - -
Typ
- - 180 0 10 10 - - 3 28 3.3 7 28
Max
0.8 VDD + 0.3 - - - - 0.4 - - - 3.6 - -
Unit
V V A A mA mA V V mA mA V mS
* XIN and PBD are pulled low.
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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February 2007 rev 0.2
AC Electrical Characteristics Symbol
fIN fOUT tLH* tHL tD
*
P2384A
Parameter
Input frequency Output frequency Output rise time (measured at 0.8 V to 2.0 V) Output fall time (measured at 2.0 V to 0.8 V) Jitter (cycle to cycle) Output duty cycle
Min
20 80 - - - 45
Typ
- - 1 1 200 50
Max
78 312 - - - 55
Unit
MHz MHz nS nS pS %
tJC
* tLH and tHL are measured into a capacitive load of 15 pF
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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February 2007 rev 0.2
Package Information
P2384A
8-lead (150-mil) SOIC Package
E
H
D
A2
A
e B A 1
C L
D
Dimensions
Symbol Min
A1 A A2 B C D E e H L
Inches Max
0.010 0.069 0.059 0.020 0.010 0.004 0.053 0.049 0.012 0.007
Millimeters Min Max
0.10 1.35 1.25 0.31 0.18 4.90 BSC 3.91 BSC 1.27 BSC 6.00 BSC 0.41 0 1.27 8 0.25 1.75 1.50 0.51 0.25
0.193 BSC 0.154 BSC 0.050 BSC 0.236 BSC 0.016 0 0.050 8
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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February 2007 rev 0.2
8-lead Thin Shrunk Small Outline Package (4.40-MM Body)
P2384A
H
E D A2 A e B A1 L C
Dimensions Symbol Min
A A1 A2 B c D E e H L 0.020 0 0.002 0.033 0.008 0.004 0.114 0.169 0.026 BSC 0.252 BSC 0.028 8 0.50 0
Inches Max
0.043 0.006 0.037 0.012 0.008 0.122 0.177 0.05 0.85 0.19 0.09 2.90 4.30
Millimeters Min Max
1.10 0.15 0.95 0.30 0.20 3.10 4.50 0.65 BSC 6.40 BSC 0.70 8
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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February 2007 rev 0.2
Ordering Codes Part Number
P2384A-08ST P2384A-08SR P2384A-08TT P2384A-08TR I2384A-08ST I2384A-08SR I2384A-08TT I2384A-08TR P2384AF-08ST P2384AF-08SR P2384AF-08TT P2384AF-08TR I2384AF-08ST I2384AF-08SR I2384AF-08TT I2384AF-08TR
P2384A
Marking
P2384AG P2384AG P2384AG P2384AG I2384AG I2384AG I2384AG I2384AG P2384AF P2384AF P2384AF P2384AF I2384AF I2384AF I2384AF I2384AF
Package Type
8-pin SOIC, Tube, GREEN 8-pin SOIC, Tape & reel, GREEN 8-pin TSSOP, Tube, GREEN 8-pin TSSOP, Tape & reel, GREEN 8-pin SOIC, Tube, GREEN 8-pin SOIC, Tape & reel, GREEN 8-pin TSSOP, Tube, GREEN 8-pin TSSOP, Tape & reel, GREEN 8-pin SOIC, Tube, Pb Free 8-pin SOIC, Tape & reel, Pb Free 8-pin TSSOP, Tube, Pb Free 8-pin TSSOP, Tape & reel, Pb Free 8-pin SOIC, Tube, Pb Free 8-pin SOIC, Tape & reel, Pb Free 8-pin TSSOP, Tube, Pb Free 8-pin TSSOP, Tape & reel, Pb Free
Qty per reel
Temperature
Commercial
2500
Commercial Commercial
2500
Commercial Industrial
2500
Industrial Industrial
2500
Industrial Commercial
2500
Commercial Commercial
2500
Commercial Industrial
2500
Industrial Industrial
2500
Industrial
Device Ordering Information
P
2384AX-08ST
SR - SOIC, T/R TT - TSSOP, TUBE TR - TSSOP, T/R ST - SOIC, TUBE PIN COUNT F = LEAD FREE AND RoHS COMPLIANT PART G = GREEN PACKAGE, LEAD FREE, and RoHS Deviation (%) and Spread option Identifier
DEVICE NUMBER P = Commercial Temperature Range (0C to 70C) I = Industrial Temperature Range (-40C to 85C)
Licensed under US patent Nos 5,488,627 and 5,631,920.
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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February 2007 rev 0.2
P2384A
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: P2384A Document Version: v0.2
Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003
(c) Copyright 2007 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.
Low Cost Frequency Multiplier
Notice: The information in this document is subject to change without notice.
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