The circuit shown in the TINA-TI reference circuit file, SBOM352a (although labeled "SBOS348" in the title block) has two 350 femtofarad capacitors tied from both of the OPA653 inputs to ground. In addition, there is a 1 milliohm resistor in parallel with the capacitor on the inverting input.
Can you tell me what the purpose of these components are? The circuit does not match anything in the OPA653 data sheet. Also, is it really true that the OPA653 does not model its input current noise?
