Design of low-power bandgap reference voltage circuit for Epi-retinal prosthesis
Koushaeian L., Muktamath V., Ghafari B., Goodarzy F., Evans R., Skafidas E.
The proposed low-power bandgap reference voltage circuitry is specially designed for a temperature sensor of a retinal prosthesis. Retinal prosthesises have great potential for restoring vision to patients suffering from age related macular degeneration (AMD) and retinitis pigmentosa (RP). Here a circuit is proposed and implemented on 65 nm IBM CMOS process, which generates a reference of 700 mV from a power supply of the 1.2 V while consuming the 23 W at room temperature. The proposed bandgap achieves a temperature coefficient (TC) of 16 ppm/C without trimming for the temperature range (TR) of 20°C to 50°C. © 2011 IEEE.