Hi.
I need to design a voltage amplifier and I just dont know how to start.
I got the following requirements:
Av = 20 (with no load).
Rin > 10KΩ
VC = 0VDC (collector voltage).
Could you please guide me through this?
* Please notice that there is a split power supply here (-5V, +5V).
I wrote the following equations.
* Av,int = gm / (1 + gm * RE) * RC = 20
* Rin = (R1 || R2) || [ (βo / gm) * (1 + gm * RE) ] = 100KΩ
* gm = IC / Vth
* IC = VCC / RC
* VB = VBE + (IC / αF) * RE ≈ VBE + IC * RE
I need to design a voltage amplifier and I just dont know how to start.
I got the following requirements:
Av = 20 (with no load).
Rin > 10KΩ
VC = 0VDC (collector voltage).
Could you please guide me through this?
* Please notice that there is a split power supply here (-5V, +5V).
I wrote the following equations.
* Av,int = gm / (1 + gm * RE) * RC = 20
* Rin = (R1 || R2) || [ (βo / gm) * (1 + gm * RE) ] = 100KΩ
* gm = IC / Vth
* IC = VCC / RC
* VB = VBE + (IC / αF) * RE ≈ VBE + IC * RE
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