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Hello,
Cross-talk is output from OUT0 in my prototype board using DS10CP152.
When IN0 is a clock signal,Cross-talk is not output.
Is there something that is considered to be the cause of this cross-talk?
Could you give me some advice about this?
○Configuration:
SEL0:1,SEL1:0 (OUT1:IN0,OUT0:IN1)
EN0,EN1:1 (OUT1:Enable,OUT0:Disable)
○Input Signal:
IN0:pseudo-random signal
IN1:Differential 0V,Common mode voltage 1.34V
○Circuit Connection:
Decoupling capacitor:10uF,0.1uF,0.01uF
IN0:LVDS Driver Output
IN1:Pulse transformaer(The primary side is floating,the secondary side is pulled up with 6.8kΩ and 10kΩ)
OUT0:LVDS Receiver Input ←Crosstalk is output
OUT1:Pulse transformaer(The secondary side is floating)
Best regards,
Seishin
Hi Seishin,
What is the value of EN0?
Please attach a schematic of the DS10CP152 circuit.
Since the DS10CP152 is a high gain amplifier I do not recommend allowing an input to settle at 0V differential. I would use some resistors to offset the input voltage slightly to keep internal crosstalk from disrupting the correct device output.
Regards,
Lee
Dear Lee,
Thank you for your reply.
I'm very sorry, I mistook my last post.
Please ignore it.
The correction is as follows;
Error: EN0,EN1:1 (OUT1:Enable,OUT0:Disable)
Correct: EN0:1,EN1:1 (OUT1:Enable,OUT0:Enable)
Please confirm it.
Please find the attached Schematic.(simplified schematic)
Best regards,
Seishin
Hi Seishin,
Glad your circuit is working now. Just a note about your schematic - the DS10CP152 already has 100 Ohm input terminations so it is not required to add them externally as well.
Regards,
Lee