CY25100ZXI31 Cypress Semiconductor Corp, CY25100ZXI31 Datasheet

CY25100ZXI31

Manufacturer Part Number

CY25100ZXI31

Description

IC FLD/FACTORY PROG SSCLK 8TSSOP

Manufacturer

Cypress Semiconductor Corp

Type

Fanout Distribution, Spread Spectrum Clock Generatorr

Datasheet

1.CY25100SXCF.pdf (14 pages)

Specifications of CY25100ZXI31

Number Of Circuits

Package / Case

8-TSSOP

Pll

Yes

Input

CMOS, Crystal

Output

CMOS

Ratio - Input:output

1:2

Differential - Input:output

No/No

Frequency - Max

200MHz

Divider/multiplier

Yes/No

Voltage - Supply

3.13 V ~ 3.45 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Frequency-max

200MHz

Maximum Input Frequency

166 MHz

Minimum Input Frequency

8 MHz

Output Frequency Range

3 MHz to 200 MHz

Supply Voltage (max)

3.45 V

Supply Voltage (min)

3.13 V

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Mounting Style

SMD/SMT

Operating Supply Voltage

3.3 V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

For Use With

CY3690 - SOCKET ADAPTER FOR CY25100CY3691 - SOCKET ADAPTER FOR CY25100

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Lead free / RoHS Compliant

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Features

■

Cypress Semiconductor Corporation

Document #: 38-07499 Rev. *H

Logic Block Diagram

Wide Operating Output (SSCLK) Frequency Range

❐

Programmable Spread Spectrum with nominal 31.5 kHz

Modulation Frequency

❐

Input frequency range

❐

Integrated Phase-Locked Loop (PLL)

Field Programmable devices available

Programmable Crystal Load Capacitor Tuning Array

Low Cycle-to-cycle Jitter

Spread Spectrum on/off function

Powerdown or Output Enable function

Commercial and Industrial temperature ranges

3.3V operation

8-Pin TSSOP and SOIC packages

3 MHz to 200 MHz

Center Spread: ±0.25% to ±2.5%

Down Spread: –0.5% to –5.0%

External Crystal: 8 to 30 MHz Fundamental Crystals

External Reference: 8 to 166 MHz Clock

PD# or OE

SSON#

XIN

XOUT

XIN

XOUT

RFB

•

198 Champion Court

VDD

Field and Factory Programmable Spread Spectrum

PROGRAMMABLE

CONFIGURATION

MODULATION

VSS

CONTROL

PLL

with

General Description

The CY25100 is a Spread Spectrum Clock Generator (SSCG) IC

used to reduce EMI found in today’s high speed digital electronic

systems.

The device uses a Cypress proprietary PLL and Spread

Spectrum Clock (SSC) technology to synthesize and modulate

the frequency of the input clock. By frequency modulating the

clock, the measured EMI at the fundamental and harmonic

frequencies are greatly reduced. This reduction in radiated

energy can significantly reduce the cost of complying with

regulatory

time-to-market without degrading system performance.

The CY25100 uses a factory or field-programmable configu-

ration memory array to synthesize output frequency, spread

percentage, crystal load capacitor, reference clock output on/off,

spread spectrum on/off function, and PD#/OE options.

The spread percentage is programmed to either center spread

or down spread with various spread percentages. The range for

center spread is from ±0.25% to ±2.50%. The range for down

spread is from –0.5% to –5.0%.

The input to the CY25100 can either be a crystal or a clock

signal. The CY25100 has two clock outputs: REFCLK and

SSCLK. The non-spread spectrum REFCLK output has the

same frequency as the input of the CY25100.

•

Clock Generator for EMI Reduction

San Jose

agency

DIVIDERS

OUTPUT

MUX

and

CA 95134-1709

(EMC)

REFCLK

SSCLK

requirements

Revised March 30, 2010

•

CY25100

and

408-943-2600

improve

[+] Feedback

Related parts for CY25100ZXI31

CY25100ZXI31 Summary of contents

Page 1

... XOUT C XOUT 4 PD SSON# Cypress Semiconductor Corporation Document #: 38-07499 Rev. *H Field and Factory Programmable Spread Spectrum Clock Generator for EMI Reduction General Description The CY25100 is a Spread Spectrum Clock Generator (SSCG) IC used to reduce EMI found in today’s high speed digital electronic systems ...

Page 2

Pinouts Pin Description Pin Name Type 1 VDD Power 2 XOUT Output 3 XIN/CLKIN Input 4 PD#/OE Input 5 VSS Power 6 REFCLK Output 7 SSCLK Output 8 SSON# Input Table 1. User Specified Variables Total Crystal Input Pin Function ...

Page 3

CY25100SXCF and CY25100SXIF (SOIC). The CY3690 and CY3691 are separate orderable items, so the existing users of the CY3672 programmer need to order only the specific socket adapter to program the CY25100. Factory Programmable ...

Page 4

Absolute Maximum Rating Supply Voltage (V )........................................ –0.5 to +7. Input Voltage ......................................–0. Storage Temperature (Non condensing)..... –55°C to +125°C Recommended Crystal Specifications Parameter Description F Nominal Crystal Frequency NOM C Nominal Load Capacitance LNOM R ...

Page 5

DC Electrical Characteristics Parameter Description I Supply Current VDD I Standby Current DDS AC Electrical Characteristics The AC Electrical Characteristics for part CY25100 is as follows. Parameter Description DC Output Duty Cycle Output Duty Cycle SR1 Rising Edge Slew Rate ...

Page 6

Application Circuit Switching Waveforms Figure 3. Duty Cycle Timing ( OUTPUT Figure 4. Output Rise/Fall Time (SSCLK and REFCLK) OUTPUT Refer to AC Electrical Characteristics table for SR (Slew Rate) values. Figure 5. ...

Page 7

Switching Waveforms Figure 6. Output Enable/Disable Timing V DD OUTPUT ENABLE 0V CLKOUT (Asynchronous) T Informational Graphs [6] 172.5 171.5 Spread Spectrum Profile: Fnom=166MHz, Fmod=30kHz, Spread%= -4% 170.5 169.5 168.5 167.5 166.5 165.5 164.5 163.5 162.5 161.5 160.5 159.5 0 ...

Page 8

Informational Graphs (continued) Duty Cycle vs . REFCLK ( 100 REFCLK (M Hz) Measured Spread% vs. VDD ...

Page 9

Informational Graphs (continued) SSCLK EMI Attenuation vs. Spread% (Measured at 7th Harmonic Temp=25C, VDD=3.3V, SSCLK=100MHz, Measured on Cypress Characterization board w ith CLOAD=15pF -10 -12 -14 -16 0.0% 0.5% 1.0% 1.5% 2.0% 2.5% 3.0% Spread ...

Page 10

Ordering Information Ordering Code Pb-Free CY25100SXCF 8-Pin Small Outline Integrated Circuit (SOIC) CY25100SXCFT 8-Pin Small Outline Integrated Circuit (SOIC) - Tape and Reel CY25100SXIF 8-Pin Small Outline Integrated Circuit (SOIC) CY25100SXIFT 8-Pin Small Outline Integrated Circuit (SOIC) - Tape and ...

Page 11

Package Diagrams Document #: 38-07499 Rev. *H Figure 6. 8-Pin (150-Mil) SOIC S8 CY25100 51-85066 *D 51-85066-*C Page [+] Feedback ...

Page 12

Package Diagrams (continued) Figure 7. 8-Pin Thin Shrunk Small Outline Package (4.40 mm Body) Z8 Document #: 38-07499 Rev. *H CY25100 51-85093-*B Page [+] Feedback ...

Page 13

Document History Page Document Title: CY25100 Field and Factory Programmable Spread Spectrum Clock Generator for EMI Reduction Document Number: 38-07499 Orig. of Submission Rev. ECN No. Change ** 126578 CKN *A 128753 IJATMP *B 130342 RGL *C 204121 RGL *D ...

Page 14

... Cypress against all charges. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement ...

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