CY25812SCT Cypress Semiconductor, CY25812SCT Datasheet

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CY25812SCT

Manufacturer Part Number
CY25812SCT
Description
Manufacturer
Cypress Semiconductor
Datasheet
Features
Cypress Semiconductor Corporation
Document Number: 38-07112 Rev. *F
Logic Block Diagram
4 to 32 MHz input frequency range
4 to 128 MHz output frequency range
Accepts clock, crystal, and resonator inputs
1x, 2x, and 4x frequency multiplication:
Center and down spread modulation
Low power dissipation:
Low cycle to cycle jitter:
Available in 8 pin SOIC and TSSOP packages
Commercial and industrial temperature ranges
CY25811: 1x; CY25812: 2x; CY25814: 4x
3.3V = 52 mW-typ at 6 MHz
3.3V = 60 mW-typ at12 MHz
3.3V = 72 mW-typ at 24 MHz
8 MHz = 480 ps-max
16 MHz = 400 ps-max
32 MHz = 450 ps-max
XOUT
VDD
VSS
XIN
1
8
7
2
8pF
8pF
300K
198 Champion Court
FRSEL
6
MODULATION
Spread Spectrum Clock Generator
REFERENCE
CONTROL
DECODER
DIVIDER
S1
LOGIC
INPUT
3
S0
Applications
Benefits
4
Printers and MFPs
LCD panels
Digital copiers
PDAs
CD-ROM, VCD, and DVD
Networking, LAN/WAN
Scanners
Modems
Embedded digital systems
Peak EMI reduction by 8 to 16 dB
Fast time to market
Cost reduction
COUNTE
PD and
San Jose
VCO
CP
R
COUNTER
MUX
and
VCO
,
LF
CA 95134-1709
SSCLK
5
Revised September 21, 2007
CY25811/12/14
408-943-2600
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CY25812SCT Summary of contents

Page 1

... Commercial and industrial temperature ranges Logic Block Diagram XIN 1 8pF 8 XOUT 8pF VDD 7 VSS 2 Cypress Semiconductor Corporation Document Number: 38-07112 Rev. *F Spread Spectrum Clock Generator Applications ■ Printers and MFPs ■ LCD panels ■ Digital copiers ■ PDAs ■ CD-ROM, VCD, and DVD ■ ...

Page 2

Pinouts Table 1. Pin Definition - 8 Pin SOIC/TSSOP Pin No. Name Type 1 Xin/CLK Crystal, ceramic resonator or clock input pin 2 VSS Power supply ground Digital Spread% control pin. 3-Level input (H-M-L). Default = M. 4 ...

Page 3

Spread% Selection The CY25811/12/14 SSCG products provide Center-Spread, Down-Spread and No-Spread functions. The amount of Spread% is selected by using 3-Level. S0 and S1 digital inputs and Spread% values are given in Table 3. Spread% Selection XIN ...

Page 4

Input and Output Frequency Selection The relationship between input frequency versus output frequency in terms of device selection and FRSEL setting is given in As shown, the input frequency range is selected by FRSEL and is the same for CY25811, ...

Page 5

Absolute Maximum Conditions Parameter Description V Supply Voltage DD V Input Voltage IN T Temperature, Storage S T Temperature, Operating Ambient A1 T Temperature, Operating Ambient A2 T Temperature, Junction J ESD ESD Protection (Human Body Model) MIL-STD-883, Method 3015 ...

Page 6

AC Electrical Specifications Parameter Description F Input Frequency Range IN T Clock Rise Time R1 T Clock Fall Time F1 T Clock Rise Time R2 T Clock Fall Time F2 T Input Clock Duty Cycle DCIN T Output Clock Duty ...

Page 7

AC Electrical Specifications Parameter Description T Cycle-to-Cycle Jitter, Spread on CCJ2 T Cycle-to-Cycle Jitter, Spread on CCJ3 T PLL Lock Time SU Characteristic Curves The following curves demonstrate the characteristic behavior of the CY25811/12/14 when tested over a number of ...

Page 8

SSCG Profiles CY25811/12/14 SSCG products use a non-linear “optimized” frequency profile as shown In “optimized” frequency profile maintains flat energy distribution over the fundamental and higher order harmonics. This results in additional EMI reduction in electronic systems. Figure 4. Spread ...

Page 9

Application Schematic MHz N/C Document Number: 38-07112 Rev 0 VDD 1 XIN 5 SSCLK Y1 8 XOUT CY25811 CY25812 CY25814 FRSEL 4 S0 VSS 2 CY25811/12/14 ...

Page 10

... SOIC – Tape and Reel CY25811SI 8-pin SOIC CY25811SIT 8-pin SOIC – Tape and Reel CY25812SC 8-pin SOIC CY25812SCT 8-pin SOIC – Tape and Reel CY25812ZC 8-pin TSSOP CY25812ZCT 8-pin TSSOP – Tape and Reel CY25814SCT 8-pin SOIC – Tape and Reel ...

Page 11

Package Drawing and Dimensions 0.189[4.800] 0.196[4.978] 0.050[1.270] BSC 0.0138[0.350] 0.0192[0.487] Figure 6. 8-Pb Thin Shrunk Small Outline Package (4.40 MM Body) Z8 PIN 6.25[0.246] 6.50[0.256] 4.30[0.169] 4.50[0.177] 8 0.65[0.025] BSC. 0.19[0.007] 0.30[0.012] 0.85[0.033] ...

Page 12

... 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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