The configurable current mirror circuit is implemented to
provide constant current in each string and eliminate the
unbalance conditions. The table I shows the performance of the
proposed mirror circuit over conventional current mirror
circuit.
Ultra low power mixed signal micro controller
MSP430F5438 is selected for implementation. NORP12 LOR
is selected as the sensor and sensor sensitivity is verified by
perfonning an experiment under different light conditions. The
results are tabulated in table II.