FS787BZ datasheet, PDF - EEWORLD Datasheet

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FS787BZ: DescriptionClock Generator, CMOS, PDSO8, 0.150 INCH, SOIC-8; CategoryThe embedded processor and controller Microcontrollers and processors; File Size92KB，13 Pages; ManufacturerCypress Semiconductor

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FS787BZ Overview

Clock Generator, CMOS, PDSO8, 0.150 INCH, SOIC-8

FS787BZ Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Parts packaging code	SOIC
package instruction	0.150 INCH, SOIC-8
Contacts	8
Reach Compliance Code	compliant
ECCN code	EAR99
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
length	4.93 mm
Humidity sensitivity level	1
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output clock frequency	62 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	220
power supply	3.3/5 V
Master clock/crystal nominal frequency	62 MHz
Certification status	Not Qualified
Maximum seat height	1.73 mm
Maximum supply voltage	3.465 V
Minimum supply voltage	3.135 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	TIN LEAD
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.94 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER
Base Number Matches	1

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APPROVED PRODUCT

FS786/787

Low EMI Spread Spectrum Clock

Features

•

Spread Spectrum Clock Generator (SSCG)

with 1x Spread and 1X non-Spread Output.

6 to 82 MHz operating frequency range.

Modulates external clocks including crystals,

crystal oscillators and ceramic resonators.

Programmable modulation with simple

R-C external loop filter (LF)

Provides Two Output Clocks, One Modulated

and One Non-Modulated clock.

Center Spread Modulation.

3 - 5 Volt power supply.

TTL/CMOS compatible outputs.

Low short term jitter.

Low Power Dissipation;

3.3 VDC = 37 mW – typical

5.0 VDC = 115 mW - typical

•

Available in 8 pin SOIC package.

Applications

•

Desktop/Notebook Computers

Printers, Copiers and MFP

Scanners and Fax

LCD Displays and Monitors

CD-ROM, VCD and DVD

Automotive and Embedded Systems

Networking, LAN/WAN

Digital Cameras and Camcorders

Modems

Benefits

•

Programmable EMI Reduction

Fast Time to Market

Lower cost of compliance

No degradation in Rise/Fall times

Lower component and PCB layer count

Product Description

The CYPRESS FS786/787

are Spread Spectrum

Clock Generator ICs (SSCG) designed for the

purpose of reducing Electro Magnetic Interference

(EMI) found in today’s high-speed digital systems.

The FS786/787 SSCG

clocks use an Cypress

proprietary technology to modulate the input clock

frequency, FSOUT by modulating the frequency of

the digital clock. By modulating the reference clock

the measured EMI at the fundamental and harmonic

frequencies of FSOUT is greatly reduced. This

reduction in radiated energy can significantly reduce

the cost of complying with regulatory requirements

without degrading digital waveforms.

The CYPRESS FS786/787

clocks are very simple

and versatile devices to use. Range selection is

performed via one pin, D0. The

FS786/787

are

designed to operate over a very wide range of input

frequencies and provide one modulated and one

non-modulated output.

The FS786/787 devices

have a simple frequency

selection table that allows operation from 6 MHz to

82 MHz in two separate ranges and two separate

parts. The bandwidth of the frequency spread at

FSOUT is determined by the values of the loop filter

components. The modulation rate is determined

internally by the input frequency and the selected

input frequency range.

The Bandwidth

of these products can be

programmed from as little as 0.6% up to as much as

4.0% by selecting the proper loop filter value. Refer

to the Loop Filter Selection chart on page 6 for

recommended values. Due to a wide range of

application requirements, an external loop filter (LF)

is used on the FS786/787 products. The user can

select the exact amount of frequency modulation

suitable for the application. Using a fixed internal

loop filter would severely limit the use of a wide

range of modulation bandwidths (Spread %) to a few

discrete values.

Refer to FS791/2/4 products for applications

requiring 80 to 140 MHz frequency range.

Cypress Semiconductor Corporation

525 Los Coches St.

Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571

http://www.cypress

Document#: 38-07031 Rev. **

05/04/2001

Page 1 of 13

FS787BZ Related Products

	FS787BZ	FS786BZ
Description	Clock Generator, CMOS, PDSO8, 0.150 INCH, SOIC-8	Clock Generator, CMOS, PDSO8, 0.150 INCH, SOIC-8
Is it Rohs certified?	incompatible	incompatible
Parts packaging code	SOIC	SOIC
package instruction	0.150 INCH, SOIC-8	0.150 INCH, SOIC-8
Contacts	8	8
Reach Compliance Code	compliant	compliant
ECCN code	EAR99	EAR99
JESD-30 code	R-PDSO-G8	R-PDSO-G8
JESD-609 code	e0	e0
length	4.93 mm	4.93 mm
Humidity sensitivity level	1	1
Number of terminals	8	8
Maximum operating temperature	70 °C	70 °C
Maximum output clock frequency	62 MHz	82 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP
Encapsulate equivalent code	SOP8,.25	SOP8,.25
Package shape	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	220	220
power supply	3.3/5 V	3.3/5 V
Master clock/crystal nominal frequency	62 MHz	82 MHz
Certification status	Not Qualified	Not Qualified
Maximum seat height	1.73 mm	1.73 mm
Maximum supply voltage	3.465 V	3.465 V
Minimum supply voltage	3.135 V	3.135 V
Nominal supply voltage	3.3 V	3.3 V
surface mount	YES	YES
technology	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL
Terminal surface	TIN LEAD	TIN LEAD
Terminal form	GULL WING	GULL WING
Terminal pitch	1.27 mm	1.27 mm
Terminal location	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED
width	3.94 mm	3.94 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER
Base Number Matches	1	1

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