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. 2022 Aug 11;22(16):5997. doi: 10.3390/s22165997

Figure 4.

Figure 4

Simplified small-signal model of the preamplifier stage, including noise current sources of transistors MN2 and MN4. By the Kirchhoff’s voltage equations in nodes 0, 1, 2 and 3, the transimpedance transfer function is obtained (see Appendix A).