P1814A-08ST datasheet, PDF - EEWORLD Datasheet

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P1814A-08ST: DescriptionClock Generator, 140MHz, CMOS, PDSO8, SOIC-8; CategoryThe embedded processor and controller Microcontrollers and processors; File Size120KB，6 Pages; ManufacturerPulseCore Semiconductor Corporation

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P1814A-08ST Overview

Clock Generator, 140MHz, CMOS, PDSO8, SOIC-8

P1814A-08ST Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
package instruction	SOIC-8
Reach Compliance Code	unknown
JESD-30 code	R-PDSO-G8
length	4.92 mm
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output clock frequency	140 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Master clock/crystal nominal frequency	35 MHz
Certification status	Not Qualified
Maximum seat height	1.8 mm
Maximum supply voltage	3.7 V
Minimum supply voltage	2.7 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.95 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER
Base Number Matches	1

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PRELIMINARY Specification

Alliance Semiconductor®

P1814A

Low Power Spread Spectrum Clock Multiplier

FEATURES

•

FCC approved method of EMI attenuation

Generates a

low EMI spread spectrum

signal of the input clock frequency

Optimized for input frequency range from

10 to 35 MHz

Internal loop filter minimizes external

components and board space

2 selectable spread ranges

Low inherent cycle-to-cycle jitter

•

3.3V operating voltage

CMOS/TTL compatible inputs and outputs

Ultra low power

CMOS design

TBD mA @3.3V, 40 MHz

TBD mA @3.3V, 80 MHz

TBD mA @3.3V, 120 MHz

Pinout compatible to Cypress CY25814

SSON/SBM pin for Spread Spectrum On/Off

and Standby Mode controls

Available in 8 pin SOIC and TSSOP

PRODUCT DESCRIPTION

The P1814A is a spread spectrum frequency

multiplier designed specifically to accept

externally generated clock, crystal and ceramic

resonator for input frequency range from 10 –

35MHz and outputs a 4X low EMI clock with

frequency range from 40 – 140MHz. The P1814A

reduces EMI at the clock source, allowing system

wide reduction of EMI of down stream (clock and

data dependent signals). The P1814A allows

significant system cost savings by eliminating the

use of expensive high frequency OSC and

reducing the number of circuit board layers and

shielding that are traditionally required to pass

EMI regulations.

The P1814A modulates the output of a single PLL

in order to “spread” the bandwidth of a

synthesized clock, thereby decreasing 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 clock generators. Lowering EMI by

increasing a signal’s bandwidth is called “spread

spectrum clock generation”.

The P1814A uses the most efficient and optimized

modulation profile approved by the FCC and is

implemented by using a proprietary all-digital

method.

APPLICATIONS

The P1814A is targeted towards printers, MFPs,

LCD scalers, Copiers, PDAs, storage devices,

scanners, faxes, embedded processor, and DSP

applications

Figure 1 - P1814 Pin Diagram

CLKIN

VSS

FS0

SSON/

SBM

XOUT

VDD

SR0

ModOut

May, 2002

Revision B

PulseCore – A Division of Alliance Semiconductor

3160 De La Cruz Blvd., Suite 200 • Santa Clara • CA • 95054

Tel (408) 748-6988 • Fax (408) 748-0009

http://www.pulsecore.com

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P1814A-08ST Related Products

	P1814A-08ST	P1814A-08TR	P1814A-08SR	P1814A-08TT
Description	Clock Generator, 140MHz, CMOS, PDSO8, SOIC-8	Clock Generator, 140MHz, CMOS, PDSO8, TSSOP-8	Clock Generator, 140MHz, CMOS, PDSO8, SOIC-8	Clock Generator, 140MHz, CMOS, PDSO8, TSSOP-8
Is it Rohs certified?	incompatible	incompatible	incompatible	incompatible
package instruction	SOIC-8	TSSOP-8	SOIC-8	TSSOP-8
Reach Compliance Code	unknown	unknown	unknown	unknown
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
length	4.92 mm	4.4 mm	4.92 mm	4.4 mm
Number of terminals	8	8	8	8
Maximum operating temperature	70 °C	70 °C	70 °C	70 °C
Maximum output clock frequency	140 MHz	140 MHz	140 MHz	140 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	TSSOP	SOP	TSSOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Master clock/crystal nominal frequency	35 MHz	35 MHz	35 MHz	35 MHz
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.8 mm	1.2 mm	1.8 mm	1.2 mm
Maximum supply voltage	3.7 V	3.7 V	3.7 V	3.7 V
Minimum supply voltage	2.7 V	2.7 V	2.7 V	2.7 V
Nominal supply voltage	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	1.27 mm	0.65 mm	1.27 mm	0.65 mm
Terminal location	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
width	3.95 mm	3 mm	3.95 mm	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER
Base Number Matches	1	1	1	-

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