Zero volt reference

Hello,

 According to the datasheet the output will be 2.048V above the ground reference, so the 'GND' would need to be at -2.048V, and the input at 200mV.

Regards,

Jeff 

Yes, you can create a virtual ground using the 2.5V version in this way. Note that MAX6126 can source and sink 10mA DC. For AC currents, you will need to address output bypass. MAX6126 requires at least 0.1uF from Out to GND (-2.5V in this case), and is stable for up to 10uF. It is not recommended to add bypass from OUT to V+, that will need to rely on bypassing between +2.5V and -2.5V.

Thank you for you reply.

Hello,

    My apologies - was thinking you were using the 2.048 part. If you are using the 2.5 V reference, you can create a virtual GND similarly by placing the 'GND' pin at -2.5V and having the input at least 200mV above the required output voltage.

Regards,

Jeff