aortizjr
Well-known member
Hi...
I was poking around and couldn't find much info about the THAT1512. It has a bit different gain characteristics making not quite the same as an INA163 or something like that. The 1510 is better for that.
So I started working on the schematics:
Here is what I have so far:
So a few questions:
Is there any optimizations or improvements that can be done to this?
I did this following THAT's data sheets and articles. I also stole some that I saw with some INA163 based schematics.
I would like this to be standalone that feeds a recorder line-in. I know that the THAT doesn't have much as far as ouptut. So it needs a balanced line driver. Would it be best to use say a DRV134 or SSM2142? Or should I build it "by-hand" with other Op-Amps.
If I do go with the DRV134/SSM2142, should I add a buffer like on Kev's DMP? Or can I go without?
http://www.celestial.com.au/~rosswood/diy/dualmicpre/dualmicpre.htm
Also regarding the output DC servo, are there better OpAmps that I can use? Do they really make a difference?
In regards to price, I think it would be cool to have two versions, the budget/bang-for-the-buck version and the best components available version.
Anyway, I will keep chugging away on this slowly, but any help at all would be excellent. Hopefully someday I can post up the full project with all the details, assuming it sounds good of course
EDIT:
------------------------------------------------
Here are the schematics after suggestions:
I was poking around and couldn't find much info about the THAT1512. It has a bit different gain characteristics making not quite the same as an INA163 or something like that. The 1510 is better for that.
So I started working on the schematics:
Here is what I have so far:
So a few questions:
Is there any optimizations or improvements that can be done to this?
I did this following THAT's data sheets and articles. I also stole some that I saw with some INA163 based schematics.
I would like this to be standalone that feeds a recorder line-in. I know that the THAT doesn't have much as far as ouptut. So it needs a balanced line driver. Would it be best to use say a DRV134 or SSM2142? Or should I build it "by-hand" with other Op-Amps.
If I do go with the DRV134/SSM2142, should I add a buffer like on Kev's DMP? Or can I go without?
http://www.celestial.com.au/~rosswood/diy/dualmicpre/dualmicpre.htm
Also regarding the output DC servo, are there better OpAmps that I can use? Do they really make a difference?
In regards to price, I think it would be cool to have two versions, the budget/bang-for-the-buck version and the best components available version.
Anyway, I will keep chugging away on this slowly, but any help at all would be excellent. Hopefully someday I can post up the full project with all the details, assuming it sounds good of course
EDIT:
------------------------------------------------
Here are the schematics after suggestions: