What is the minimum RIN value when using the MAX97220A?
I want to use an RF of 12KΩ and the RIN of 1.9 KΩ. Is there any problem? Is it possible?
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MAX97220A
Production
The MAX97220 is a differential input DirectDrive® line driver/headphone amplifier. This device is capable of driving line level loads with 3VRMS into...
Datasheet
MAX97220A on Analog.com
What is the minimum RIN value when using the MAX97220A?
I want to use an RF of 12KΩ and the RIN of 1.9 KΩ. Is there any problem? Is it possible?
Hi MRKRJAY,
There is no specific minimum RIN value for the MAX97220A. The datasheet only limits the RIN value for C/D variants of the MAX97220 to 7.4kΩ - 12.7kΩ.
I think your selections of RF = 12kΩ and RIN = 1.9kΩ will work fine for your application. The one thing to note is to make sure your CIN capacitor selection with your selected RIN produces a desired input filter response. This is detailed more on page 13 of the MAX97220 datasheet.
Hope this helps,
Quinn M.
Your answer is very helpful.
Thank you so much for your reply!
Your answer is very helpful.
Thank you so much for your reply!