Texas Instruments LMK1C1108, Руководство пользователя, Страница: 2 / 12

Table of Contents
1 Features ................................................................................................................................................................................... 2
2 Signal Path and Control Circuitry ......................................................................................................................................... 2
3 Getting Started ........................................................................................................................................................................ 2
4 Power-Supply Connections ................................................................................................................................................... 2
5 Enabling and Disabling the Outputs ..................................................................................................................................... 3
6 Output Clock ........................................................................................................................................................................... 3
7 Bill of Materials ....................................................................................................................................................................... 4
7.1 REACH Compliance........................................................................................................................................................... 4
8 Schematic ................................................................................................................................................................................ 5
9 Revision History ...................................................................................................................................................................... 6
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1 Features
• Easy-to-use evaluation board to fan out up to eight LVCMOS clocks with low phase noise, phase jitter
• Output enable pin configurable through jumper
• Board powered from a single 3.3-V, 2.5-V, 1.8-V supply
• Clock output traces are length matched
2 Signal Path and Control Circuitry
The LMK1C1108EVM supports single-ended inputs up to 250 MHz. For more information about the LMK1C1108,
see the LMK1C1108 product data sheet available for download from the TI Web site (
www.ti.com ).
3 Getting Started
The LMK1C1108EVM has self-explanatory labeling and uses similar naming conventions as the LMK1C1108
product data sheet. In this user’s guide, all words in
boldface reflect the actual labeling on the EVM.
4 Power-Supply Connections
Connect the power-supply source and ground to the terminal block labeled J1 as shown in Figure 4-1 .
Alternatively, connect the power-supply source to TP1 , and connect the ground of the power-supply to TP2 .
Decoupling capacitors and a ferrite bead isolate the EVM power from the LMK1C1108 device power pins.
TP1 and TP2:
Connect VDD to TP1
Connect GND to TP2
J1
Terminal
Block
Figure 4-1. Power Supply Connection Locations
The LMK1C1108EVM operates from a single 3.3-V, 2.5-V, 1.8-V supply.
Table of Contents www.ti.com
2 LMK1C1108 Low-Additive, Phase-Noise LVCMOS Clock Buffer Evaluation
Board SNAU262A – DECEMBER 2020 – REVISED JANUARY 2021
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