LT 1085 / 1033 advice

[sumotan]

Hi Guys
I know that this is old school now but I have a couple of these regs.
Going to build a +- 15v supply. Aside from adding a cap on the adj
pin, what else can I do to maximise it's performance
Your kind advice is greatly appreciated

Thank you

 

[gman76]

What's your load current? What are these rails powering? If these regulators are powering circuits that have good PSRR, the basic hookup on the front page will be fine.

 

[sumotan]

Thks Gman
Actually using it to power a pair of Buf 03 in mono
mono. Think it's around 60ma per rail. Don't more
research since . Have set my mind on using a
regulator set up

Many thanks

 

[ticknpop]

Refer to LT 1033 data sheet page 9 the high stability regulator using an LM 329 is also lower noise than just bypassing the reference resistor.

Reverse the LM 329 and capacitor polarity and do the same for the LT 1085. I've used them for 20 years .

http://cds.linear.com/docs/en/datasheet/1033fd.pdf


Don't forget soft recovery diodes and maybe a common mode choke between 2 sets of filter caps to really make a clean low noise supply

 

[sumotan]

Hi Ticknpop
Thank you for the advice. I've now build a tracking
reg base on an article that I found & quite surprisingly
it's very quiet & sounds pretty good.
In anycase will try out your recommendation

Many thanks again