- D 2 72 The Circuit Shown In Fig P2 72 Is A Representation Of A Versatile Ic Known As A Differential Amplifier Module Av 1 (49.48 KiB) Viewed 47 times
- D 2 72 The Circuit Shown In Fig P2 72 Is A Representation Of A Versatile Ic Known As A Differential Amplifier Module Av 2 (49.48 KiB) Viewed 47 times
- D 2 72 The Circuit Shown In Fig P2 72 Is A Representation Of A Versatile Ic Known As A Differential Amplifier Module Av 3 (49.48 KiB) Viewed 47 times
- D 2 72 The Circuit Shown In Fig P2 72 Is A Representation Of A Versatile Ic Known As A Differential Amplifier Module Av 4 (49.48 KiB) Viewed 47 times
- D 2 72 The Circuit Shown In Fig P2 72 Is A Representation Of A Versatile Ic Known As A Differential Amplifier Module Av 5 (49.48 KiB) Viewed 47 times
- D 2 72 The Circuit Shown In Fig P2 72 Is A Representation Of A Versatile Ic Known As A Differential Amplifier Module Av 6 (49.48 KiB) Viewed 47 times
- D 2 72 The Circuit Shown In Fig P2 72 Is A Representation Of A Versatile Ic Known As A Differential Amplifier Module Av 7 (32.32 KiB) Viewed 47 times
- D 2 72 The Circuit Shown In Fig P2 72 Is A Representation Of A Versatile Ic Known As A Differential Amplifier Module Av 8 (37.11 KiB) Viewed 47 times
D*2.72 The circuit shown in Fig. P2.72 is a representation of a versatile IC known as a differential amplifier module available from different manufacturers under various part numbers such as INA 105 and AMP03. It consists of an op amp and precision resistors. The circuit can be configured for a variety of applications by the appropriate connection of terminals A, B, C, D, and O. 25 ΚΩ A o (i) -1 V/V (ii) +1 V/V (iii) +2 V/V (iv) +1/2 V/V Bo www 25 ΚΩ 25 ΚΩ www www 25 ΚΩ 00 OD Figure P2.72 (a) Show how the circuit can be used to implement a difference amplifier of unity gain. (b) Show how the circuit can be used to implement single-ended amplifiers with gains: Avoid leaving a terminal open-circuited, for such a terminal may act as an "antenna," picking up interference and noise through capacitive coupling. Rather, find a convenient node to connect such a terminal in a redundant way. When more than one circuit implementation is possible, comment on the relative merits of each, taking into account such considerations as dependence on component matching and input resistance.
D*2.72 The circuit shown in Fig. P2.72 is a representation of a versatile IC known as a differential amplifier module available from different manufacturers under various part numbers such as INA 105 and AMP03. It consists of an op amp and precision resistors. The circuit can be configured for a variety of applications by the appropriate connection of terminals A, B, C, D, and O. 25 ΚΩ A o (i) -1 V/V (ii) +1 V/V (iii) +2 V/V (iv) +1/2 V/V Bo www 25 ΚΩ 25 ΚΩ www www 25 ΚΩ 00 OD Figure P2.72 (a) Show how the circuit can be used to implement a difference amplifier of unity gain. (b) Show how the circuit can be used to implement single-ended amplifiers with gains: Avoid leaving a terminal open-circuited, for such a terminal may act as an "antenna," picking up interference and noise through capacitive coupling. Rather, find a convenient node to connect such a terminal in a redundant way. When more than one circuit implementation is possible, comment on the relative merits of each, taking into account such considerations as dependence on component matching and input resistance.
2.75 (a) Consider the instrumentation amplifier circuit of Fig. 2.20(a). If the op amps are ideal except that their outputs saturate at ±5 V, in the manner shown in Fig. 1.14, find the maximum allowed input common-mode signal for the case R₁ = 1 k2 and R₂ = 100 k (b) Repeat (a) for the circuit in Fig. 2.20(b), and comment on the difference between the two circuits. Jas Op ed to 14 that fin Og www www FA (4) F13A fino apier black to the pfer The c A w
*2.77 For an instrumentation amplifier of the type shown in Fig. 2.20(b), a designer proposes to make R₂ = R3 = R4 = 100 ks2, and 2R₁ = 10 k. For ideal components, what difference-mode gain, common-mode gain, and CMRR result? Reevaluate the worst-case values for these for the situation in which all resistors are specified as ±1% units. Repeat the latter analysis for the case in which 2R₁ is reduced to 1 k2. What do you conclude about the effect of the gain of the first stage on CMRR? (Hint) Can www A₂ Acm: R40 (1 - R2₂ R₂) = (一 ) R3 How Аста= (1) Figure 2.20 (b) A popular circuit for an instrumentation amplifier. The circuit in (a) with the connection between node X and ground removed and the two resistors and R, lumped together w 0.5 [1- (1±004)] = ±0.02 (0.5, 12004) How to have there values ? Where did they came from?