Hi Team,
What is the frequency response of the DAC output when line out (high impedance termination) is used instead of headphones?
Thanks,
Franz
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Hi Team,
What is the frequency response of the DAC output when line out (high impedance termination) is used instead of headphones?
Thanks,
Franz
Hi Franz,
I expect the dynamic performance to be the same or better. Note that we specify a minimum load of 10kΩ on the output (minimum meaning that lower resistive values = higher current). You can expect better THD+N performance for the whole range as well.
If you require a curve it, I can check if I have an EVM in storage but it will take a day or two before I can take the measurement.
Let me know,
Thanks,
Paul
Hi Paul,
Can you still take the measurement? The customer would appreciate the frequency response measurement from the output of PCM1774 once with line load and once with 16/32-Ohm load. If possible with different capacitance values on the output lines.
Thank you,
Franz
Hi Franz,
I have looked through my inventory and I do not actually have the PCM1774 EVM. I will not be able to take these measurements. If you would like, you can reach out to me at frost@ti.com and we can discuss this opportunity and how the DAC team can best support it.
Thanks,
Paul