ANALOG DEVICES UG-070 Service Manual
Evaluation Board User Guide
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UG-070
Setting Up the Evaluation Board for the ADCLK854
PACKAGE LIST
Evaluation board with components installed
Applicable documents (schematic and layout)
GENERAL DESCRIPTION
This user guide describes how to set up and use the evaluation
board for the ADCLK854. The ADCLK854 data sheet contains
full technical details about the specifications and operation of this
device and should be consulted when using the evaluation board.
The ADCLK854 is a high performance clock fanout buffer.
The evaluation board is fabricated using a high quality Rogers®
dielectric material. Transmission line paths are kept as close to
100 Ω differentially as possible.
Figure 1. Evaluation Board
Please see the last page for an important warning and disclaimers. Rev. 0 | Page 1 of 8
08669-001
UG-070 Evaluation Board User Guide
TABLE OF CONTENTS
Package List ....................................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Recommended Board Setup ............................................................ 3
REVISION HISTORY
12/09—Revision 0: Initial Version
Clock Outputs ................................................................................4
Evaluation Board Schematic and Artwork .....................................5
ESD Caution...................................................................................8
Rev. 0 | Page 2 of 8
Evaluation Board User Guide UG-070
RECOMMENDED BOARD SETUP
The recommended setup for the ADCLK854 evaluation board
is shown in Figure 2. V
is set to 1.8 V. The IN_SEL jumper
S
provides the desired input configuration. Logic 0 on the IN_SEL
pin selects the CLK0 and
IN_SEL pin selects the CLK1 and
On the evaluation board, the CLK0 and
ac-coupled, differential operation to the . This input
CLK0
inputs, and Logic 1 on the
CLK1
inputs.
CLK0
inputs are set up for
ADCLK854
configuration requires the user to provide the appropriate ac
swing to both inputs. Refer to the data sheet and
the schematic (see ) for the input specifications.
Figure 4
ADCLK854
CLK1 is set up to evaluate with a single-ended source via the balun
on the evaluation board. In addition, series capacitors in the
path provide ac-coupled inputs to the ADCLK854.
POWER SUPPLY
1.8V GND
The range of the peak-to-peak input voltage swing at CLK1 is
0.15 V to 1.8 V. Output jitter performance is degraded by input
slew rate, as shown in the ADCLK854 data sheet.
Table 1. Basic Equipment Required
Quantity Description
1 Single power supply
1 Signal source
1 High bandwidth oscilloscope
1 High bandwidth differential probe
2 Matched high speed cables
BOARD
GND
OUTx
OUTx
PROBE
OSCILLOSCOPE
08669-002
CLOCK
SOURCE
V
S
CLK1
CLK1
CLK0
CLK0
Figure 2. Recommended Setup for ADCLK854 Evaluation
ADCLK854
EVALUATION
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