AD9865BCPRL Analog Devices Inc, AD9865BCPRL Datasheet - Page 45

• Manufacturer Part Number: AD9865BCPRL
• Description: IC FRONT-END MIXED-SGNL 64-LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD9865BCPRL

• Rohs Status: RoHS non-compliant
• Rf Type: HPNA, VDSL
• Features: 10-bit ADC(s), 10-bit DAC(s)
• Package / Case: 64-VFQFN, CSP Exposed Pad

occur during undershoot or overshoot caused by ringing. If the
signal traces cannot be kept shorter than about 1.5 inches, series
termination resistors (33 Ω to 47 Ω) should be placed close to
all digital signal sources. It is a good idea to series-terminate all
clock signals at their source, regardless of trace length.
The receive RX+ and RX− signals are the most sensitive signals
on the entire board. Careful routing of these signals is essential
for good receive path performance. The RX+ and RX− signals
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form a differential pair and should be routed together as a pair.
By keeping the traces adjacent to each other, noise coupled onto
the signals appears as common mode and is largely rejected by
the MxFE receive input. Keeping the driving point impedance
of the receive signal low and placing any low-pass filtering of
the signals close to the MxFE further reduces the possibility of
noise corrupting these signals.
AD9865