Environmental Engineering Reference
In-Depth Information
The equivalent small-signal model of the VOA considered is shown in
Fig. 9.19, where and are the equivalent resistance and the
compensation capacitance at the gain node, respectively, and is the
equivalent resistance at the input of the differential stage T1-T2. The
transconductance gain, is equal to that of the input transistors T1-T2,
with the other parameters being previously defined.
Applying a resistive feedback as shown in Fig. 9.12, the DC loop gain
becomes
