that IC looks to have the same issue as the previous ones -- it does convert a voltage differance into a voltage with respect to a referance, but it does not have equal input impedances unless the voltage at both terminals is 0v. i would think a true IN-AMP would be required to get both conditions -- same noise on both lines and differential inputs.
The high CMRR of the chip is nice though, as the noise rejection will be affected by the ability to reject common-mode signals, but the input imedance of the inverting terminal is a function of the signal on the output.
The high CMRR of the chip is nice though, as the noise rejection will be affected by the ability to reject common-mode signals, but the input imedance of the inverting terminal is a function of the signal on the output.
"I guess the fuzz is that +in has 110k impedance to GND and -in 9.1k impedance to gnd in your case."
Close, the inverting input would be 10K. Hardly qualifies as balanced, do you think?
SE is right, transformers are a better solution.
Studio and pro gear frequently had octal sockets for your transformers. You invest in good transformers and keep them when you sell the gear.
Jensen makes some of the best.
Electronically balanced inputs are a waste of time and money, even those with laser trimmed CMRR.
http://www.edcorusa.com/sound/matchers/s2s10k_10k.htm
90% of the Jensen quality for 10% of the price.
Close, the inverting input would be 10K. Hardly qualifies as balanced, do you think?
SE is right, transformers are a better solution.
Studio and pro gear frequently had octal sockets for your transformers. You invest in good transformers and keep them when you sell the gear.
Jensen makes some of the best.
Electronically balanced inputs are a waste of time and money, even those with laser trimmed CMRR.
http://www.edcorusa.com/sound/matchers/s2s10k_10k.htm
90% of the Jensen quality for 10% of the price.
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