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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: IEEE Trans Biomed Circuits Syst. 2017 Dec;11(6):1192–1203. doi: 10.1109/TBCAS.2017.2778048

Fig. 7.

Fig. 7

(a) Schematic illustration of the current source with global and local circuit sub-blocks. The global circuit is shared among all channels while each channel has its own local sub-block for generating the reference current. (b) Implementing the local circuit sub-blocks is important for making the design robust to process variations.