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2. A CS amplifier is driven by a signal source with Rsie = 100 k2, and...
3) CS amplifier shown below is biased by a constant-current source I. Let Rsig 0.5 M, RG -2 MQ, gm -3mA/V, Rp -20 k2, and RL 10 k2. Find the midband voltage gain and the lower 3-dB frequency with Cc 6.3 nF, Cc2-0.53 uF and Cs-6 uF. Rp C2 C F 3) CS amplifier shown below is biased by a constant-current source I. Let Rsig 0.5 M, RG -2 MQ, gm -3mA/V, Rp -20 k2, and RL 10 k2. Find...
6. Find the midband gain Ay and the 3-dB (high) frequency of a MOS cascoding amplifier as shown in the following circuit. The MOSFET device parameters are as follows: (Consider Qand Q2 are the same.) g. = 1.2 mA/V. r. = 100 k82; Cos = 20 fF, Cgd = 8 fF, and Cab = 10 fF. The source has a large Rsig = 50 k 2. On the load side, R = 2 M, and CL = 50 fF. (Hint:...
Problem #5. Consider the amplifier circuit below. The NMOS has Vi-1.2V and (1/2)kn'(WL)-12.5 mA/V2, Cgs-15pF. Cgd-9pF The PNP has β-150. C,-25pF, and dju 11pF (a) Find the DC drain and collector currents. b) Find the midband gain Vout/ Vs of the entire circuit (c) Estimate the lower 3 dB point of the amplifier (d) Estimate the upper 3 dB point of the amplifier 47uF 300 Rs10K 0.22uF 6.8K Q2 Vin 47K 2.2uF 1.0K 6V Problem #5. Consider the amplifier circuit...
I have a CS amplifier and I have to find the upper 3dB frequency using the method of open-circuit constants with given values. VDD VDD 10V R3 12k R1 >600k 1uF 2N7000* 1uF SRL 10k + Vs ( 0.1 Vpk 1kHz R2 > 450k R4 50 03 10uF Fig. 1. CS Amplifier: schematic For the circuit of the figure, determine the upper 3dB frequency fu analytically using the method of open-circuit constants (e.g., text-book, pp. 733-736, Sec. 9.4.3-4.). Use the...
A MOSFET common-source amplifier has gm=1.8mA/V, ro=100KΩ, RD=10KΩ, Cgs=2pF, Cgd=0.4pF. The amplifier is fed from a voltage source with an internal resistance of 500KΩ and the output is connected to a 10KΩ load. If the lower cutoff frequency (fL) is 10KHz, find the Gain-bandwidth product of this amplifier in (dB) KHz (ignore the sign). Approximate your answer to 2 decimal point accuracy.
- +Voo The following common source amplifier is already biased properly. Given: gm-2 mA/V R = 20 k02 - Vour Rs 1 k NEM Cgr = 20 fF C. = 5 fF. & Rs - c a C2 = 0 Pe=20 k2 Ri= 20 k2 R, LC Cgd = 5 EF C1=00 d) Find the mid-band voltage gain vout /vi. e) What is the new mid-band voltage gain, vout /v.if capacitor C2 is removed?! 1) What is the new 3dB...
In the CS amplifier shown in the figure above, Rsig = 20 kΩ amplifier input resistance Rin = 80 kΩ, Cgs=2pF, Cgd= 0.5pF, gm=2mA/V, ro= 80 kΩ , RD = 5 kΩ, and RL = 10 kΩ. (π = 3.14) a) Determine high frequency cut-off fH. (Use Miller Approximation. Use . as the decimal point. Answer in MHz; for 7.89MHz write 7.89 only.) VOD RD V RIS R CS V Ro In the CS amplifier shown in the figure above....
The NMOS transistor in the CS amplifier circuit of the figure is biased to have gn=4mA/V. a)Find Am, fpi, fp2, fp3, and fl. (Assume the largest pole value as fl) b)Assume that the same amplifier is biased to have gm=lmA/V, 19=100k 2, Cgs=1pF, Cgd=0.2pF, Find Am and fu. You can use approximation methods. c) Draw the overall frequency response. VPD 47 ΜΩ 4.7 k12 w OV 100 k12 0.1 uF MH 10 k12 0.01 uF +1 10 ΜΩ 2 ΚΩ...
The amplifier shown in Figure below has Rsig = R1 =1 k12, Rc= 1 k-2, RB = 47 k22, B = 100, 1=0.54 mA, Cu = 0.8 pF, and f1 =600 MHz (a) Find gm and r7. (b) Neglecting ro, find the midband voltage gain from base to collector (neglect the effect of RB). (c) Use the gain obtained in (c) to find the component of Rin that arises as a result of RB. Hence find Rin (d) What is...
(15 marks) Here is an amplifier operating from VDD-3 V. Rsig-5 kΩ RL = 1 kQ, CL = 100 ff, CGS-20 fF, CGD-4 fF. Assume the dc component of R. si a) Find the dc drain current Id, the dc component of Vo and the MOSFET's b) Draw an ac small-signal equivalent circuit that includes all relevant c) By writing the necessary nodal equations, find the transfer function d) Using the values for the capacitors, resistors etc, determine the poles...