PCS3P2191A PulseCore Semiconductor, PCS3P2191A Datasheet

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PCS3P2191A

Manufacturer Part Number
PCS3P2191A
Description
Spread Spectrum Clock Generator
Manufacturer
PulseCore Semiconductor
Datasheet
CLKIN / XIN
January 2007
rev 0.1
Block Diagram
Features
Product Description
PCS3P2191A is a versatile spread spectrum frequency
modulator that generates four low EMI 4x clocks at the
output. PCS3P2191A
XOUT
Generates four 4X low EMI spread spectrum clocks
Input frequency: 15MHz
Output frequency: 60MHz
Internal loop filter minimizes external components
Selectable Centre Spread frequency deviation:
± 1.25%, ± 1.5%, ± 1.75% ± 2.0%
3.3V ± 0.3V Operating Voltage
Commercial Temperature range
Available in 16-pin TSSOP
Advanced low power CMOS process
and board space
±0.5%, ±0.75%, ± 1.0%,
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018
Oscillator
Crystal
Notice: The information in this document is subject to change without notice.
Frequency
Feedback
Spread Spectrum Clock Generator
Divider
Divider
PulseCore Semiconductor Corporation
www.pulsecoresemi.com
S2
Modulation
Detector
Phase
S1
S0
5
offers seven selectable centre spread options of ±0.5% to
±2.0%, and a no spread option. (Refer Spread Deviation
Selection Table). PCS3P2191A reduces electromagnetic
interference (EMI) at the clock source, allowing system
wide reduction of EMI of all clock dependent signals.
The PCS3P2191A allows significant system cost savings
by reducing the number of circuit board layers, ferrite
beads, and shielding that are traditionally required to
pass EMI regulations. The PCS3P2191A uses the most
efficient and optimized modulation profile approved by
the FCC and is implemented in a proprietary all digital
method.
Application
PCS3P2191A is targetted for LCD panel application
GND
VDD
2
Loop
Filter
VCO
PLL
PCS3P2191A
Output
Divider
www.DataSheet4U.com
ModOUT
4

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PCS3P2191A Summary of contents

Page 1

... The PCS3P2191A allows significant system cost savings by reducing the number of circuit board layers, ferrite beads, and shielding that are traditionally required to pass EMI regulations. The PCS3P2191A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method ...

Page 2

... Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. Spread range select. Digital logic input used to select frequency deviation (Refer Spread Deviation Table). This pin has an internal pull-up resistor. Power Supply Voltage Pin. Connect to +3.3V. PCS3P2191A www.DataSheet4U.com VDD S0 S1 ...

Page 3

... Input Capacitance IN Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. Deviation OFF ± 0.5% ± 0.75% ± 1.0% ± 1.25% ± 1.5% ± 1.75% ± 2.0% Parameter Min 3.0 0 PCS3P2191A www.DataSheet4U.com Rating Unit -0.5 to +4.6 V VSS-0.5 to VDD+0.5 V VSS-0.5 to VDD+0.5 V -55 to +125 °C 260 °C 150 °C 2 ...

Page 4

... LH HL Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. VSS – 0.3 @ 0.4V, VDD = 3.3V) XOL @ 2.5V, VDD = 3.3V) XOH I = 12mA -12mA OH Parameter (Pin 5,6,11,12) PCS3P2191A Min Typ Max www.DataSheet4U.com Unit 0.8 V 2.0 VDD+ 0.3 V -35 µA +35 µ ...

Page 5

... Load capacitance Shunt capacitance ESR Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice 510Ω Crystal C1 C2 15MHz ± 50 ppm or better at 25°C -25°C to +85°C -40°C to +85°C 18pF 7pF maximum 25Ω PCS3P2191A www.DataSheet4U.com ...

Page 6

... PIN Seating Plane θ Dimensions Inches Min Max Min 0.043 0.002 0.006 0.05 0.031 0.041 0.80 0.007 0.012 0.19 0.004 0.008 0.09 0.193 0.201 4.90 0.169 0.177 4.30 0.026 BSC 0.252 BSC 0.020 0.030 0.50 0° 8° 0° PCS3P2191A www.DataSheet4U.com C Millimeters Max 1.20 0.15 1.05 0.30 0.20 5.10 4.50 0.65 BSC 6.40 BSC 0.75 8° ...

Page 7

... DEVICE PIN COUNT G = GREEN PACKAGE, LEAD FREE, and RoHS PART NUMBER X= Automotive (-40C to +125C Reserved 2 = Non PLL based 3 = EMI Reduction 4 = DDR support products 5 = STD Zero Delay Buffer PulseCore Semiconductor Mixed Signal Product PCS3P2191A www.DataSheet4U.com Temperature Commercial Commercial Commercial Commercial U = MSOP J=TSOT26 E = TQFP L = LQFP ...

Page 8

... PulseCore against all claims arising from such use. Spread Spectrum Clock Generator Notice: The information in this document is subject to change without notice. PCS3P2191A www.DataSheet4U.com Copyright © PulseCore Semiconductor All Rights Reserved Part Number: PCS3P2191A Document Version: v0 ...

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