Controlling Rhi and Input Offset Voltage

Controlling Rhi:
- The resistance between Rhi and Rlo is suppose to typically be 22kohm according to page 15 and 28kohm according to page 3
- According to page 4, min is supposed to be 16 kohm, max 36 kohm
- Measuring my LED drivers my self, they were all between 17.4 -17.93 kohm, average being 17.5 kohm, therefore the approximate equivalent resistance would be about 2.5 kohm
- Will drive it with a voltage divider, where R2 is log potentiometer, the will be succeeded with a voltage buffer
- Will need to use a high precision voltage buffer with an input offset voltage of 10 uV - NCS333ASQ3T2G
- ***Simulated with LTC1250, it also has a max input offset voltage of 10 uV
  - *** LM324 has a max possible input offset voltage of |7mV|, if it is possible, then that limits lower bound of Rhi
Input Offset Voltage in filters:
- LM324 has input offset voltage in max absolute value of 7mV not good for filtering signals that are going to be displayed in a dB meter -> solution append high pass RC filter to output of active filters, the resistor will ground input when there is 0V input signal
- when tested in hardware, there was a -0.1mV DC voltage across resistor
- As a test, I replaced the LM324 op amps in the brilliance filter with LTC1250, output votlage when Vi=0 was never greater than |0.9fV|, whereas when LM324 was used Vo was -1.84mV

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