SaM - Voltage Amplifier

Remeber:

Operational amplifier:

• $\beta =\frac{R_1}{R_1+R_2}$
• $A=\frac{A_{DC}}{1+j\frac{f}{f_H}}$ Non-inverting amplifier: $V_0=V_i\left(1+\frac{R_2}{R_1}\right)$

A voltage amplifier has this structure:

IMPORTANTE A voltage amplifier has this properties:

• Single pole (dominant pole) system.
• DC-coupled.
  It means that the amplifier is capable of amplifying signals with both DC (direct current) and AC (alternating current) components.
• Very high input impedance, very low output impedance.
  While a current amplifer has low input resistance.

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