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CS4398 evaluation board schematic - Values for R and C's marked with "NO POP"
CS4398 evaluation board schematic - Values for R and C's marked with "NO POP"
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Old 5th April 2011, 09:46 AM   #1
Groundloops is offline Groundloops
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CS4398 evaluation board schematic - Values for R and C's marked with "NO POP"
Default CS4398 evaluation board schematic - Values for R and C's marked with "NO POP"

I'm about to build a balanced output stage for a CS4398. Inevitably I came across the evaluation board schematic which is all intelligible, but I have no clue what the values for the resistor and capacitors marked with "NO POP" should be. Someone with a clue here? Can they simply be omitted?
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Old 5th April 2011, 10:43 AM   #2
alexcp is offline alexcp  United States
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CS4398 evaluation board schematic - Values for R and C's marked with "NO POP"
"no pop" means "not populated" - that is, the schematic and the PCB have the space for these components, but they are not installed. It doesn't make sense to install a cap in parallel to a zero ohm resistor...
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Old 5th April 2011, 10:54 AM   #3
digits is offline digits
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The whole universe was created the last time someone made the laws of physics try to divide by zero.
So, have you started listening to these yet? How would you say they compare to similar products?
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Old 5th April 2011, 11:36 AM   #4
Groundloops is offline Groundloops
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CS4398 evaluation board schematic - Values for R and C's marked with "NO POP"
Quote:
It doesn't make sense to install a cap in parallel to a zero ohm resistor...
Ehm ... Obiviously!

Quote:
The whole universe was created the last time someone made the laws of physics try to divide by zero.
Go for "transreal numbers":
BBC - Berkshire - Features - 1200-year-old problem 'easy'
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Old 5th April 2011, 12:55 PM   #5
JensH is offline JensH  Denmark
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CS4398 evaluation board schematic - Values for R and C's marked with "NO POP"
If you replace the 0ohm resistor with another value, e.g. 634ohm, you can use R43 to get a differential gain. With the components not populated there will be no gain, just buffering and low pass filtering. The capacitors can be used to control the gain at high frequencies.
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