Show why n+ directly in the p-substrate cannot be used as a diode in a CMOS process . Generate a diode model that produces a forward voltage drop of 700 mV when driven with 1 µA and has a change...

Show why n+ directly in the p-substrate cannot be used as a diode in a CMOS process .

Generate a diode model that produces a forward voltage drop of 700 mV when driven with 1 µA and has a change with temperature, d V
_D
/d T, near room temperature, of -2 mV/C. Use simulations to verify your model meets the requirements.