Level shifing - IC or amp ops , need schematics

Status
Not open for further replies.
W

whee_man

Newbie level 2
Joined
Aug 18, 2009
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Portugal
Activity points
1,293
avdd refecence dspic

Hi,

I've a dspic30f and i want to acquire an AC signal (+/- 10V) to do some amplitude and frequency analysis (up to the 40th harmonic - 2000kHz ).

How can i convert from a +/-10V signal to a 0V to +5V signal for ADC acquisition? Is there a IC capable of doing this job?

I suppose i can do this by using a couple amp ops (1 for offset, other with <1 gain), but i can't find any schematics for doing this.
Can someone help me?

Sorry for my bad English.

Rgds
Whee_man
 

Level shifing - IC

You can use of course "a couple amp ops", but two resistors (or possibly three, if you want to use the Avdd reference voltage for level shift) are sufficient.
 

Re: Level shifing - IC

FvM said:
You can use of course "a couple amp ops", but two resistors (or possibly three, if you want to use the Avdd reference voltage for level shift) are sufficient.
Click to expand...

How would you mount the resistors? Can you supply the schematic for that suggestion?

Rgds
Whee_man
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…