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. 2019 Oct 17;19(20):4520. doi: 10.3390/s19204520

Table 4.

Formulation of the different designs.

PeH	PhyAS
$V_{I N} = 0.5 V$	$V_{I N} = (V_{C C} - V_{R E F}) \cdot (\frac{R_{G S R}}{R 3 + R_{G S R}} - \frac{R 2}{R 1 + R 2})$
$V_{O U T} = C_{G S R} \cdot V_{I N} \cdot R + V_{I N}$	$V_{O U T} = V_{I N} \cdot (1 + \frac{100 K Ω}{R_{G}}) + V_{R E F}$
$R_{G S R} = \frac{1}{C_{G S R}}$	$R_{G S R} = \frac{\frac{V_{I N}}{V_{C C} - V_{R E F}} \cdot R 3 \cdot (R 1 + R 2) + R 3 \cdot R 2}{R 1 - \frac{V_{I N}}{V_{C C} - V_{R E F}} \cdot (R 1 + R 2)}$
$C_{G S R} = \frac{V_{O U T} - V_{I N}}{V_{I N} \cdot R}$	$C_{G S R} = \frac{1}{R_{G S R}}$