Programmable High-Frequency Crystal Oscillator (XO)
CY25702
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
, CA 95134
•
408-943-2600
Document #: 38-07721 Rev. **
Revised December 09, 2004
Features
• Programmable High-frequency Crystal Oscillator (XO)
• Wide output (CLK) range from:
— 1.0 to 125 MHz (VDD = 5.0V)
— 1.0 to 90 MHz (VDD = 3.3V)
• Integrated phase-locked loop (PLL)
• Low cycle-to-cycle Jitter
• 3.3/5.0V operation
• Output Enable function
• Power-down function
• Refer to CY25701 for SSCG function
• Lead-free package
Benefits
• Eliminates the need for external crystal oscillator.
• Internal PLL to generate up to 125-MHz output.
• Suitable for most PC, consumer and networking
applications.
• Application compatibility in standard and low-power
systems.
• CY25701 can be used as a direct replacement in 3.3V
applications if Spread Spectrum Clock (SSC) is
required for EMI reduction without any PCB
modification.
• In-house programming of samples and prototype
quantities is available using the CY3672 programming
kit and CY36xx socket adapter. Sample and production
quantities are available through Cypress’s value-added
distribution partners.
Logic Block Diagram
PLL
PROGRAMMABLE
CONFIGURATION
OUTPUT
DIVIDERS
and
MUX
1
4
2
VDD
VSS
OE/PD#
RFB
CXOUT
CXIN
3
CLK
Pin Configuration
CY25702
4-pin Plastic SMD
4
OE/PD#
3
VDD
1
2
VSS
CLK