6 days ago
DA7218 unused input or output components
Posted byjbright10分 1 reply- Can we use the headphone output as a Line out, biased above ground, and not use the charge pump, or is the charge pump always required whenever output is used?
- If we're not using the charge pump, we can remove components on HPCSN, HPCFP, HPCFN, but do we still need the capacitor on HPCSP?
- If we're not using the input, do we need to keep the components on MICBIAS1, MICBIAS2?
Any other components that we can remove when input or output is not being used?
1 day ago
Hello Johnathan,
Thank you for reaching out to us
1. You need to connect the Charge Pump Pins to generate the supplies for the amplifier. (Please see attached a snippet from the DS)
2. When not using the charge pump , the HPCSP has to be powered ON
3. No, not necessary
Also the DA7212 has a Line out driver, is that interesting for you?
Please let me know if you have any further questions
Kind Regards
Shivani