I am using a 12bit DAC (TLV6518) which is referenced to 2.048V (so the max output is double this).
The output of the DAC is fed to an opamp in non-inverting configuration that has a trim pot as part of the resistor network for adjusting gain.
The desired output range of the OpAmp is a very stable (i.e. temperature stable, low drift) 0-10V
This voltage is being used to control the frequency of an oscillator so once the trim pot has been set to calibrate the gain it would be ideal for this setup to remain stable.
Question:
1. What lowdrift, dual supply opamp would you recommend using in this situation?
(preferably dual package that is pin compatible with a TL072)
2. What other considerations should I have for the design and pcb layout?
(e.g. extra cap in op amp feedback? tempco resistor? guard traces around the non-inverting pin?)
The output of the DAC is fed to an opamp in non-inverting configuration that has a trim pot as part of the resistor network for adjusting gain.
The desired output range of the OpAmp is a very stable (i.e. temperature stable, low drift) 0-10V
This voltage is being used to control the frequency of an oscillator so once the trim pot has been set to calibrate the gain it would be ideal for this setup to remain stable.
Question:
1. What lowdrift, dual supply opamp would you recommend using in this situation?
(preferably dual package that is pin compatible with a TL072)
2. What other considerations should I have for the design and pcb layout?
(e.g. extra cap in op amp feedback? tempco resistor? guard traces around the non-inverting pin?)