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Related Manuals for Texas Instruments CDCM1804
Summary of Contents for Texas Instruments CDCM1804
- Page 1 CDCM1804/CDCP1803 Evaluation Module User’s Guide 2006 High Performance Analog/CDC SCAU009C...
- Page 2 TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:...
- Page 3 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions:. This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end−product fit for general consumer use.
- Page 4 EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2006, Texas Instruments Incorporated...
- Page 5 In addition, it provides recommendations on proper termination, decoupling, and how to use the CDCM1804/CDCP1803 in single-ended applications, such as LVTTL, LVCMOS, or other differential clock signals such as LVPECL, LVDS, HSTL, SSTL−2, CML VML or similar 2.5-V or 3.3-V signals and provide...
- Page 6 How to Use This Manual FCC Warning This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference.
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Page 7: Table Of Contents
............Mode Setting for CDCM1804/CDCP1803 Through EN, S0, S1, and S2 . - Page 8 ........4−1 EVM Power Connections for the CDCM1804/CDCP1803 Evaluation ....
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Page 9: Introduction
MLF) and ease the evaluation of the clock drivers without having to modify existing board design. The CDCM1804 clock drivers distributes one pair of differential clock input to three pairs of differential clock outputs (Y0:Y2) and an additional CMOS output (Y3) with minimum skew for clock distribution. -
Page 10: Cdcm1804/Cdcp1803 Evm Default Setup
Figure 1−1. CDCM1804/CDCP1803 EVM Default Setup... -
Page 11: Evm Pcb
Chapter 2 EVM PCB This chapter discusses the use of the EVM and the contents of the kit. Topic Page Use of the EVM ..........Design of Differential Traces . -
Page 12: Use Of The Evm
If ac-coupling is not desired, then 0-Ω resistors can be installed instead. 2.4 CDCM1804/CDCP1803 EVM Kit Contents CDCM1804/CDCP1803 EVM board CDCM1804/CDCP1803 EVM kit documentation (this document) -
Page 13: Cdcm1804/Cdcp1803 Evm Configuration
When the driver operates from a 3.3-V supply, VT is set to approximately 1.3 V. The EVM has been designed to support the various I/O signaling and output termination. The CDCM1804/CDCP1803 EVM board gives the options for operation, some of which can be soldered into the EVM or connected through input connectors. Topic... -
Page 14: Mode Setting For Cdcm1804/Cdcp1803 Through En, S0, S1, And S2
3.1 Default EVM Delivery The board is normally delivered in a default configuration that requires external clock inputs at IN pair. The CDCM1804/CDCP1803 is shipped with default op- eration. Many test set-ups used evaluate CDCM1804/CDCP1803 functionality. 3.2 Mode Settings for CDCM1804/CDCP1803 Through EN, S0, S1, and S2 Note: This 60−k pullup is internal to the... -
Page 15: Using The Evm
Chapter 4 Using the EVM This chapter discusses the use of the EVM. Topic Page EVM Power Connections ........Applying an Input . -
Page 16: Evm Power Connections
4.3 Typical Test Results Figure 4−2 shows a typical test result obtained with the EVM. Figure 4−2 shows the output of the CDCM1804/CDCP1803 being driven directly into a 50-Ω oscilloscope. - Page 17 Figure 4−2. Typical LVPECL Output from the CDCM1804/CDCP1803 EVM Using the EVM...
- Page 18 Figure 4−3. Typical CMOS Output from the CDCM1804 EVM...
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Page 19: Schematic, Parts List, Board Stackup, Board Layouts, And References
Chapter 5 Schematic, Parts List, Board Stackup, Board Layouts, and References This appendix contains schematics, corresponding parts list, board stackup, board layout and references for the CDCM1804/CDCP1803 EVM. Topic Page Schematic ........... . -
Page 20: Schematic
Schematic 5.1 Schematic Figure 5−1. Schematic of EVM Signal Path... -
Page 21: Parts List
R16, R17 ERJ−2GEJ131X Panasonic R19, R18 ERJ−2GEJ330X Panasonic R20, R21 4.99 kΩ 1/16W 1% 0402 ERJ−2RKF4991X Panasonic CDCM1804 / CDCP1803 CDCM1804 / CDCP1803 Spacers, 4−40 X 3/4, Round 1895 Keystone Alum Screw Machine Phillips PMS 440 0031 PH Building 4−40X5/16... -
Page 22: Top Layer
Schematic 5.3 Board Stack-Up and Layer Patterns Figure 5−2. Top Layer Figure 5−3. PWR1 Layer... -
Page 23: Gnd1 Layer
Schematic Figure 5−4. GND1 Layer Figure 5−5. Bottom Layer Schematic, Parts List, Board Stackup, Board Layouts, and References... -
Page 24: References
Instruments application report, Texas Instruments, (SCAA059) 2) Interfacing between LVPECL, LVDS, and CML, Texas Instruments application report, Texas Instruments, (SCAA056) 3) CDCM1804: 1:3 LVPECL Clock Buffer and Additional LVCMOS Output and Programmable Divider data sheet, Texas Instruments, (SCAS697) 4) CDCP1803 data sheet, Texas Instruments, (SCAS727)
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