TRANSCRIBE THE FOLLOWING TEXT IN DIGITAL FORMAT
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TRANSCRIBE THE FOLLOWING TEXT IN DIGITAL FORMAT
Transcribed Image Text:To Calculate the required values of Iref and R,
1. Determine the required.
value of Vds.
Vas is the voltage drop across the MOSFET.
Vds = Vout +
- Vgs
4.
Vout
vgs is the
2.5V
-
gati
The required value of vas is
vds = 2.5 V + 0.5 V = 3V
Determine the required value of Id.
Ild is the drain
Source voltage of the MOSFET,
Id - Jout
= 250uA
3. Determine the required value of vgs.
Ngs Vt + Id x Rs
If we assume RS 20
vgs = -0.6 +250 4A XO
5. Determine
with a
= -0.6
=
curvent
of
Determine the required value of
Iref is the reference current for the current source.
Iref
Id/kp
/250UA/V²-
Values of Rs and vt'
the MOSFET.
250UA
the required value of R
R is the resistor in the current source
R₂ (vds tvt) / Iref
I ref=1V, R = 2₁4 +
Iref
zirjelawa daraming talinity
IV
the circuit will produce a current of 255DUA
at the output
minimum butput voltage of 2.5 V, using the provided.
(3√ -0.6V)/V = 2.432
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