The figure below shows a circuit that consists of two BJTS. Both transistors Q1 and Q2 are constructed with similar geometry and design parameters. The supply voltage, Vcc= 7V, and the value of the resistor, R is 6.3k0. Assume all the transistors are biased in the active region with similar current gain, ß = 100, and base-emitter voltage, VBE = D.7V. Vcc Ic₂ 20 Ic1
The figure below shows a circuit that consists of two BJTS. Both transistors Q1 and Q2 are constructed with similar geometry and design parameters. The supply voltage, Vcc= 7V, and the value of the resistor, R is 6.3k0. Assume all the transistors are biased in the active region with similar current gain, ß = 100, and base-emitter voltage, VBE = D.7V. Vcc Ic₂ 20 Ic1
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Solve all given parts a to g. I will upvote
Transcribed Image Text:The figure below shows a circuit that consists of two BJTs. Both transistors Q1 and Q2
are constructed with similar geometry and design parameters. The supply voltage, Vcc=
7V, and the value of the resistor, R is 6.3k0. Assume all the transistors are biased in
the active region with similar current gain, ß = 100, and base-emitter voltage, V BE
0.7V.
Vcc
Icz
OV
Ic₁
(a) State the type of the circuit shown above.
(b) State one disadvantage of using BJT compared to MOSFET in this application.
(c) Determine the collector current of transistor Q2.
(d) Determine the collector current of transistor Q1.
(e)
Explain the cause of the mismatch between the input reference current, IR, and the
output current, Ic₁-
(f) Suggest a circuit topology that reduces the mismatch between the input reference
current and the output current. Sketch and label the suggested circuit. Use only BJTs in your
proposed circuit.
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