UG-2010
Evaluating the ADN4680E 250 Mbps, Half-Duplex, Quad M-LVDS Transceivers
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | 1 of 12
FEATURES
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Easy evaluation of the
M-LVDS transceivers
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Board layout optimized for high speed signaling
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Matched track lengths on M-LVDS differential pairs with control-
led 100 Ω differential impedance
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Matched track lengths on high speed DIx and ROx logic signals
with controlled 50 Ω impedance to GND
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SMA jacks for connecting to high speed DIx and ROx logic
signals and M-LVDS Ax and Bx signals
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Optional screw terminal connectors for accessing the ROx, REx,
DEx, and DIx logic signals
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Power and ground connections through screw terminal blocks
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Jumper-selectable global power down via the ENP pin
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Jumper-selectable driver enable, receiver enable, and fail-safe
for each transceiver via the REx, DEx, and FSx pins
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Test points for measuring all signals and multiple ground points
to facilitate probing of multiple signals
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100 Ω termination resistors across Ax and Bx signals to simulate
a terminated bus
EQUIPMENT NEEDED
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A 4 channel oscilloscope
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A signal generator
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A 3.0 V to 3.6 V power supply
EVALUATION KIT CONTENTS
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EVAL-ADN4680EEBZ
GENERAL DESCRIPTION
The EVAL-ADN4680EEBZ allows quick and easy evaluation of
the ADN4680E 250 Mbps, half-duplex, quad multipoint, low
voltage differential signaling (M-LVDS) transceivers. The EVAL-
ADN4680EEBZ allows the input and output functions of each trans-
ceiver to be exercised without the need for external components.
Subminiature A (SMA) connectors provide convenient connections
for high speed logic and the M-LVDS bus signals. Screw terminal
blocks are available to access power, ground, and digital signals.
Jumper options allow control of each transceivers driver and receiv-
er enable pins, each transceivers fail-safe functionality, and the
global power-down mode.
The EVAL-ADN4680EEBZ is optimized for high speed signaling.
The differential M-LVDS signal traces on the board are routed as
a length matched 100 Ω differential pair. The DIx digital input and
ROx receiver output are also length matched and routed with a
controlled 50 Ω impedance to ground. The EVAL-ADN4680EEBZ
features a solid ground and power plane for optimum power
integrity.
The EVAL-ADN4680EEBZ has a footprint for the ADN4680E trans-
ceivers in a 7 mm × 7 mm, 48-lead LFCSP.
For full details on the ADN4680E, see the ADN4680E data sheet,
which must be used in conjunction with this user guide when using
the EVAL-ADN4680EEBZ.
