drops with frequency.

Chart of single-transistor amplifiers

Some configurations of single-transistor amplifier can be used as a buffer to isolate the driver from the load. For most digital applications, an NMOS voltage follower (common drain) is the preferred configuration. These amplifiers have high input impedance, which means that the digital system will not need to supply a large current.

Logic buffer amplifiers

A non-linear buffer amplifier is sometimes used in digital circuits where a high current is

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