May 2008

PCS3P73U00A

rev 0.3

Notice: The information in this document is subject to change without notice.

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200 Campbell, CA 95008

• Tel: 408-879-9077 • Fax: 408-879-9018

www.pulsecoresemi.com

USB 2.0 Peak EMI reduction IC

General Features

•

1x Peak EMI Reduction IC

•

Input frequency:

10MHz - 60MHz @ 2.5V

10MHz - 70MHz @ 3.3V

•

Output frequency:

10MHz - 60MHz @ 2.5V

10MHz - 70MHz @ 3.3V

•

Supply Voltage: 2.5V±0.2V

•

3.3V ±0.3V

•

Analog Spread Selection up to ±0.5%

•

ModRate selection option

•

Commercial temperature range

•

8pin TSSOP, SOIC and TDFN(2X2) COL Package

•

Conforms to USB2.0 compliance standards

•

The First True Drop-in Solution

Product Description

PCS3P73U00A is a versatile, 3.3V / 2.5V Peak EMI

reduction IC. PCS3P73U00A accepts an input clock either

from a Crystal or from an external reference (AC or DC

coupled to XIN / CLKIN) and locks on to it delivering a 1x

modulated clock output. PCS3P73U00A has a Frequency

Selection (FS) control that facilitates selecting one of the

two frequency ranges within the operating frequency range.

Refer to the frequency Selection table for details.

PCS3P73U00A has an SSEXTR pin to select different

deviations depending upon the value of an external resistor

connected between SSEXTR and GND. Modulation Rate

(MR) control selects two different Modulation Rates.

PCS3P73U00A operates from a 3.3V / 2.5V supply and is

available in an 8 pin TSSOP, SOIC, and TDFN(2X2) COL

packages, over Commercial temperature range.

Applications

PCS3P73U00A is targeted for USB applications.

compliance

for commonly used frequencies.

Block Diagram

VDD

GND

FS

ModOUT

SSEXTR

PLL

Crystal

Oscillator

XOUT

XIN / CLKIN

MR