a) An instrumentation amplifier shown in Figure 1 is an anplifier of low-level signals used in process control or heasurement applications and conmercially available in single-package units: (i) Show that vb-R3/R2(1+2R1/Rg) (v2-v1). (ii) Assume R1=50k2 and R2=R3. If Rg is a tunable resistor with resistance ranging from 1000ohms to 10k ohms, wh the range of variable gain? (iii) Assume R1-10k2 and R2=R3, | v2-v1 | ≤120mV and Vcc=12 V. In order to keep the op-amp circuit work in linear egion, what is the minimum value of Ry? (iv) State TWO characteristics of this op-amp circuit.
a) An instrumentation amplifier shown in Figure 1 is an anplifier of low-level signals used in process control or heasurement applications and conmercially available in single-package units: (i) Show that vb-R3/R2(1+2R1/Rg) (v2-v1). (ii) Assume R1=50k2 and R2=R3. If Rg is a tunable resistor with resistance ranging from 1000ohms to 10k ohms, wh the range of variable gain? (iii) Assume R1-10k2 and R2=R3, | v2-v1 | ≤120mV and Vcc=12 V. In order to keep the op-amp circuit work in linear egion, what is the minimum value of Ry? (iv) State TWO characteristics of this op-amp circuit.
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Transcribed Image Text:(a) An instrumentation amplifier shown in Figure 1 is an anplifier of low-level signals used in process control or
measurement applications and commercially available in single-package units:
(i) Show that vb-R3/R2(1+2R1/Rg) (v2-v1).
(ii) Assume R1-50k2 and R2=R3. If Rg is a tunable resistor with resistance ranging from 1000ohms to 10k ohms, what
is the range of variable gain?
(iii) Assume R1=10k2 and R2=R3, v2-v1 | ≤120mV and Vcc=12 V. In order to keep the op-amp circuit work in linear
region, what is the minimum value of Ry?
(iv) State TWO characteristics of this op-amp circuit.
R₂
R₂
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