Can OPA335 opamp output zero volts when used with the LM7705?

Status
Not open for further replies.
T

treez

Guest
Hello,

I am using an OPA335 opamp as a differential amp with a gain of 100....

...sometimes the input signal will only be 500uV, which would mean an output voltage of 50mV , which is lower than the 100mV minimum achievable output voltage when the OPA335 opamp has a single supply.

.....If i use the LM7705 to supply the opamps "V-" terminal, then will i be able to attain the 50mV output voltage?


LM7705 datasheet
https://www.ti.com/product/lm7705&lpos=Middle_Container&lid=Alternative_Devices

OPA335 Datasheet
https://www.ti.com/lit/ds/symlink/opa335.pdf
 

Yes, but only just.

Ideally you would have rails at +2.5 and -2.5 so the output is more central in range but a negative rail of 0.23V will just about allow you to get zero out for zero in.

Brian.
 
Reactions: treez

    T

    Points: 2
    Helpful Answer Positive Rating
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…