NB7L32MMNEVB
Setup (continued)
Step 3: Setup Input Signals
3a: Set the signal generator amplitude to 400 mV.
NOTE: The signal generator amplitude can vary from
75 mV to 900 mV to produce a 400 mV DUT
output.
3b: Set the signal generator offset to ? 200 mV (the center of
a nominal NCML output).
NOTE: The V CMR (Input Common Mode Range) allows
the signal generator offset to vary as long as
V TH is within the V CMR range. Refer to the
device data sheet for further information.
Set the generator output for a PRBS data signal, or for a
square wave clock signal with a 50% duty cycle.
Step 4: Connect Output Signals
4a: Connect the outputs of the device (Q0, Q1, … ) to the
oscilloscope. The oscilloscope sampling head must have
internal 50 W termination to ground.
NOTE: Where a single output is being used, the
unconnected output for the pair must be
terminated to V CC through a 50 W resistor for
best operation. Unused pairs may be left
unconnected.
MORE INFORMATION ABOUT EVALUATION BOARD
Design Considerations for >10 GHz operation
While the NB7L32M is specified to operate at 10 GHz,
this evaluation board is designed to support operating
frequencies up to 20 GHz.
The following considerations played a key role to ensure
this evaluation board achieves high ? end microwave
performance:
? Optimal SMA connector launch
? Minimal insertion loss and signal dispersion
? Accurate Transmission line matching (50 W )
? Distributed effects while bypassing and noise filtering
http://onsemi.com
3
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