An all-CMOS diff-amp, including the current source circuit, with the configuration in Figure 11.32 is to be designed to have a differential-mode gain of
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Microelectronics: Circuit Analysis and Design
- Question What must be the minimum power rating for the external pass transistor used with a 7815 regulator in a circuit such as that shown in Figure below? The input voltage is 30 V and the load resistance is 10 N. The maximum internal current is to be 700 mA. Assume that there is no heat sink for this calculation. Keep in mind that the use of a heat sink increases the effective power rating of the transistor and you can use a lower rated transistor. Qext VIN Rext VOUT C 7815 - RLarrow_forwardA. For the configuration shown below in 4(A), find the small signal voltage gain (Voutp-Voutm)/Vin B. For the configuration shown in 4(B), find the following parameters (a) DC value of output voltage, (b) input common mode range and (c) small signal voltage gain when all transistors are in saturation vou/Vin as indicated in the diagram; Assume no body bias on M1 ad M2 For this problem ONLY, assume the following device parameters V7, = \V| = 0.5V;K, = k ,' = 100 µA / V²,a, = a, = 0.01 VDD = 3V (10/1) M, M. (10/1) (10/1) M, |M, (10/1) Voutp 20kΩ м, (200/1) м, м, (10/1) м, Vin (1/1) м, M. (10/1) + Vin DC VAN M, 100HA (1/1) M, M, (10/1) (A) (B) V. =-1Varrow_forwardQUESTION 2: The differential amplifier in Figure P11.4 is biased with a three-transistor current source. The transistor parameters: B = 85 , VBE(on) = 0.7 V, and V= 0. Determine a new value of R1 such that VCE4 = 1.3 V. What are the values of Ic4, Ic2, and I4? Ic4 (mA) Format : 4.2 Ic2 (mA) Format : 8.382 I (mA) Format : 5.576 R1 (kN) Format : 5.969 +5 V 8.5 k2 2 k2 2 kQ Q4 VCE4 Qs Q3 Q2 VCE2 -5 V Figure P11.4 wwarrow_forward
- circuits by using the small signal models of the transistor. Assume the Early voltage of the transistors are infinitely large. Calculate the small-signal input and output impedances of the following Vcc R1 R1 Rout VB RE Rin R2arrow_forwardWhat must be the minimum power rating for the external pass transistor used with a 7815 regulator in a circuit such as that shown in Figure below? The input voltage is 30 V and the load resistance is 10 n. The maximum internal current is to be 700 ma Assume that there is no heat sink for this calculation. Keep in mind that the use of a heat sink increases the effective power rating of the transistor and you can use a lower rated transistor. VIN Re VoUT 7815 RLarrow_forwardQUESTION 5: Consider the differential amplifier in Figure P11.17 with parameters V = 5 V, V = -5 V, and Io = 0.8 mA. Neglect base currents and assume V₁ = ∞ for all transistors. The emitter currents can be written as I£1 = IS1 EXP(VBE1/VT) and I£2 = 152 EXP(VBE2/VT). If v₁ = v₂ = 0, Is1 = 2.3 x 10-¹5 A and Is2 = 2.2 x 10-¹5 A, determine (v01 - v0₂) for Rc₁ = 7.2 k and Rc2 = 7.9 kq. IE1 (mA) Format : 0.3093 IE2 (mA) Format : 0.5634 (V01 - V02) (V) Format: 0.5862 V+ R₁ 2₁ Rc1 VOI Rc2 O V02 2₂ V Figure P11.17 V₂ 24arrow_forward
- b) Refer to BJT cascade amplifier in Figure Q2, determine the de bias voltages and collector current for each stage.arrow_forwardRefer to the differential amplifier circuit shown below . Determine the quiescent DC voltage at the collector terminal of each transistor assuming VBE of two transistor are negligible. What will be the quiescent DC values if VBE is taken to be 0.7 V.arrow_forwardConsider class-A emitter follower circuit shown in the figure below. The circuit parameters are V+ = 24 V, V- = -24 V, and RL = 2000. The transistor parameters are B = 50, VBE(on) = 0.7 V, and VcE(sat) = 0.2 V. The output voltage is to vary between +20 V and -20 V. The minimum current in Q1 is to be iej = 20 mA. For vo = 0, find the dissipated in the first transistor Qr. power RL wwliarrow_forward
- Qa: A transistor dissipates 50W in an ambient temperature of 60°C, the thermal resistances are 0-0.5 °CW¹, 8ca-4 °CW. Determine the junction temperature without a heat sink. Determine the thermal resistance of the heat sink to avoid the junction temperature exceeding 180°C. )arrow_forwardDesign a common-source amplifier such that gain is high and drain current is 11.33 amp. State the tech parameters and assumptions made.arrow_forwardA) Find and draw the equivalent re circuit model. Calculate the voltage gain.arrow_forward
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