AES3 specifies an output of 2 to 7 Vpp when terminated into 110 Ohms without a cable connected. According to the standard, 4 Vpp is typical.
This assumes a typical RS-422 driver operating at 5V.
In todays world, 5V power is not always convenient. I don't see any issue with an RS-422 style driver operating at 3.3V assuming that the device works properly at 3.3V and that it is fast enough. One candidate is the Renesas ISL3295
FWIW, I have an independent S/PDIF driver so I don't actually care about external AES to S/PDIF passive attenuators.
Does anyone have experience with this approach? Comments?
Thanks
This assumes a typical RS-422 driver operating at 5V.
In todays world, 5V power is not always convenient. I don't see any issue with an RS-422 style driver operating at 3.3V assuming that the device works properly at 3.3V and that it is fast enough. One candidate is the Renesas ISL3295
FWIW, I have an independent S/PDIF driver so I don't actually care about external AES to S/PDIF passive attenuators.
Does anyone have experience with this approach? Comments?
Thanks
4 V peak-peak differential is 2 V peak-peak per side is less than 3.3 V. It should fit as long as you use shunt rather than series termination (or double-loop feedback, but that is more complicated) at the sending side.
In any case, the AES3 output of an SRC4392 also works off a 3.3 V supply.
In any case, the AES3 output of an SRC4392 also works off a 3.3 V supply.