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. 2015 Jul 14;15(7):17076–17088. doi: 10.3390/s150717076

Figure 1.

Figure 1

(a) Block diagram of the sensor. (Photodiode, I/V—Current to Voltage Converter, ADC—analogue to digital converter, Digital signal processor, DAC—digital to analogue converter, LED—light emitting diode)—Items inside dotted region are all “CMOS on-chip”; (b) Layout of the CMOS sensor.