LMK04803 datasheet(2/139 Pages) TI1

Part #	LMK04803

Description	Low-Noise Clock Jitter Cleaner

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Manufacturer	TI1 [Texas Instruments]

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LMK04803, LMK04805, LMK04806, LMK04808

SNAS489K – MARCH 2011 – REVISED DECEMBER 2014

www.ti.com

Table of Contents

8.5

Programming........................................................... 47

1

Features .................................................................. 1

8.6

Register Maps ......................................................... 51

2

Applications ........................................................... 1

9

Application and Implementation ........................ 97

3

Description ............................................................. 1

9.1

Application Information............................................ 97

4

Revision History..................................................... 2

9.2

Typical Applications .............................................. 114

5

Pin Configuration and Functions ......................... 4

9.3

System Examples ................................................. 122

6

Specifications......................................................... 6

9.4

Do's and Don'ts ..................................................... 124

6.1

Absolute Maximum Ratings ...................................... 6

10

Power Supply Recommendations ................... 125

6.2

ESD Ratings.............................................................. 6

10.1

Pin Connection Recommendations..................... 125

6.3

Recommended Operating Conditions ....................... 6

10.2

Current Consumption and Power Dissipation

6.4

Thermal Information .................................................. 7

Calculations............................................................ 126

6.5

Electrical Characteristics........................................... 7

11

Layout................................................................. 129

6.6

Timing Requirements .............................................. 13

11.1

Layout Guidelines ............................................... 129

6.7

Typical Characteristics: Clock Output AC

11.2

Layout Example .................................................. 130

Characteristics ......................................................... 14

12

Device and Documentation Support ............... 131

7

Parameter Measurement Information ................ 15

12.1

Device Support.................................................... 131

7.1

Charge Pump Current Specification Definitions...... 15

12.2

Documentation Support ...................................... 131

7.2

Differential Voltage Measurement Terminology...... 16

12.3

Related Links ...................................................... 131

8

Detailed Description ............................................ 17

12.4

Trademarks ......................................................... 131

8.1

Overview ................................................................. 17

12.5

Electrostatic Discharge Caution .......................... 131

8.2

Functional Block Diagram ....................................... 21

12.6

Glossary .............................................................. 131

8.3

Feature Description................................................. 22

13

Mechanical, Packaging, and Orderable

8.4

Device Functional Modes........................................ 43

Information ......................................................... 131

4 Revision History

Changes from Revision J (March 2013) to Revision K

Page

•

Changed 90 to 80 and 80 to 90 for fCLKout-startup parameter in Electrical Characteristics....................................................... 11

•

Added "Specification is not valid for CLKoutX or CLKoutY in analog delay mode" in table note for Electrical

Characteristics ..................................................................................................................................................................... 11

•

Changed "Temperature" to "Ambient Temperature" in heading titled "Charge Pump Output Current Magnitude

Variation vs. Ambient Temperature" .................................................................................................................................... 15

•

Added "temporarily" in VCXO/CRYSTAL Buffered Outputs ................................................................................................ 18

•

Changed from "n possible" to "D possible" in 0-Delay ......................................................................................................... 20

•

Changed "can" to "cannot" in Input Clock Switching - Pin Select Mode .............................................................................. 24

•

Deleted Clock Switch Event without Holdover in Clock Switch Event with Holdover .......................................................... 25

•

Added paragraph beginning "For applications ..." in PLL2 Frequency Doubler ................................................................... 29

•

Changed 5 to15 in Table 11 ................................................................................................................................................. 42

•

Deleted Mode 5 row in Table 12 .......................................................................................................................................... 43

•

Added Mode 15 Additional Configurations section .............................................................................................................. 46

•

In Table 16, added [27:26], [23:22], and [21:20] for Register 27 row. Added [31:20] for R28. Added [26:24] for R30.

Added [7:6]. .......................................................................................................................................................................... 51

•

In Table 18, changed "Actual PLL2 N divider value used in calibration routine". Added footnote "Inversion for Status

0 and 1 pins is only valid for CLKin_SELECT_MODE = 0x06" ............................................................................................ 56

•

In Table 28, added "to reduce supply..." footnote for 9 through 14. Added footnote "To reduce supply switching and

crosstalk noise, it is recommended to use a complementary LVCMOS output type such as 6 or 7". ................................. 64

•

Added footnote "To reduce supply" for 8 through 14 in Table 32 ....................................................................................... 66

•

Changed "Divide" to "Definition" in Table 39, Table 40, Table 61, and Table 62 ................................................................ 68

•

Changed to "MUX OUTPUT" in Table header row in Table 42............................................................................................ 69

•

In Table 43, added footnote, "Contact TI Applications for more information on using this mode". Changed to "Dual

2

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