CY25701_07 Datasheet, PDF (1/8 Pages) Cypress Semiconductor – Programmable High Frequency Crystal Oscillator with Spread Spectrum (SSXO) and No Spread Spectrum (XO) Option

CY25701
Programmable High Frequency Crystal
Oscillator with Spread Spectrum (SSXO)
and No Spread Spectrum (XO) Option
Features
■ Crystal Oscillator with Spread Spectrum Clock (SSXO)
■ No Spread Spectrum (XO) Option
■ Wide operating output clock frequency range of 10 –166 MHz
■ Programmable spread spectrum with nominal 31.5 kHz
modulation frequency
■ Center spread: ±0.25% to ±2.0%
■ Down spread: –0.5% to –4.0%
■ No spread: ± 0.0%
■ Integrated phase-locked loop (PLL)
■ 85 ps typical cycle-to-cycle jitter with SSCLK = 133 MHz
■ 3.3V operation
■ Output enable function
■ Package available in 4-Pin ceramic LCC SMD
■ Pb-free package
■ Industrial temperature from –40°C to 85°C
Benefits
■ Provides a wide range of spread percentages for maximum
electromagnetic interference (EMI) reduction to meet
regulatory agency electromagnetic compliance (EMC) require-
ments. Reduces development and manufacturing costs and
time-to-market.
■ This versatile programming feature enables the user to switch
between SSXO (with Spread) and XO (without Spread)
functions with ease.
■ Internal PLL to generate up to 166 MHz output.
■ Suitable for most PC, consumer, and networking applications
■ Application compatibility in standard and low-power systems
■ In house programming of samples and prototype quantities is
available using CY3672 programming kit and CY3724 socket
adapters. Production quantities are available through Cypress’
value added distribution partners or by using third party
programmers from BP Microsystems, and HiLo Systems, and
others.
Logic Block Diagram
RFB
CXIN
CXOUT
1
OE
PLL
with
MODULATION
CONTROL
PROGRAMMABLE
CONFIGURATION
4
VDD
2
VSS
OUTPUT
DIVIDERS
and
MUX
3
SSCLK
Pin Configuration
CY25701
4-pin Ceramic SMD
4
VDD
3
SSCLK
OE
VSS
1
2
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-07313 Rev. *B
• San Jose, CA 95134-1709 • 408-943-2600
Revised August 24, 2007