Noticed nonlinearity at the bounds of both the voltage and current channels. A stopgap solution is to limit the voltage range to -2V to 2V and the current channel to -0.9mA to 0.9mA.
Current hypothesis is the 3.3V LDO or -3.3 charge pump are dropping too much voltage resulting in the nonlinear behavior.
Noticed nonlinearity at the bounds of both the voltage and current channels. A stopgap solution is to limit the voltage range to -2V to 2V and the current channel to -0.9mA to 0.9mA.
Current hypothesis is the 3.3V LDO or -3.3 charge pump are dropping too much voltage resulting in the nonlinear behavior.