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17 Threads found on Cascade Bandwidth
Hello Engineers, I just want to Design a cascade BJT Amplifier Two Stages, but my problem is, Im only given two values Vin = 50mVp @ 25Khz and Vo= 3Vp, I dont really know where to start.. They say that i need to draw a transfer curve to find the Value of Ic. Please Help me. :cry::cry::cry:
Hi. I designed a folded cascade Opamp with Hspice and I want to simulate it. I want to calculate dc open loop gain, bandwidth, Phase margin. How can I do that? please help me. regard. A.Jafari
Don't confuse cascade with cascode! Cascode is used to reduce Miller capacitance and possibly increase gain and improve bandwidth. cascade is simply putting one stage after another to increase gain. Keith.
Source degeneration is pretty consistent. A cascade of low gain stages can perform better than a smaller number of high gain stages when it comes to bandwidth and low- overdrive prop delay.
Hello, I want to design 2-2 cascade delta sigma modulator for 2 mhz signal bandwidth, i must sum the two outputs given by the two stages, i use ORCAD PSPICE for similation, i need to implement H(z) =z^-1 which is a delay unit, i don't know the structure of this function using MOS transistors and how i implement it. Please help me
middle stage final output images.el
Don’t use a two stage approach; you will burn too much current in the second stage. Unity Gain bandwidth = 500 MHz => for stability second pole should be around 1.5 GHz!!!!! Second Pole = gm(second stage)/(2*pi*Cload), believe me that will cost current. Normally a folded cascade should be enough to reach 75 dB, but probably not with that
I cascade two stages of UPC2776 as a post amplifier to boost the signal from a Transimpedance amplifier. Since UPC2776 have 23dB gain and 2.7GHz bandwidth and TIA supposed to work at 70MHz, it should not be problem from bandwidth point of view. The wired thing happened once I power up UPC 2776. Output of the second stage oscillating (...)
Hello, before I ask you my question I just wanted to say I am new at the board. So over to my question. I need some help to dimension a cascade circuit amplifier with the LM324. The circuit must fulfil the following values: - In Impedance = 25kΩ - Above frequency = 100Hz - Below frequency = 150kHz - Maximun gain = 40dB I have solve
You can use a cascade of LC structures to improve the bandwidth of your matching. I usually don't use the ADS Smith Chart tool to match, but I do the S parameter simulation to match a load. You can use the optimizator also. By
if there are n stages of amplification each with bandwidth = b what is the effective b.w of all n amplifiers in cascade?........ i found it as b.(2^1/n -1 )^
Deal all, I will design 14bit/24MHz sampling 2-2 cascade delta-sigma ADC,Where I should to be careful design rule?stability?or power consumption? About OTA design, How do many unity-bandwidth and settling time enough to satisfy? Design spec: resulation: 14bit input bandwidth: 1MHz Sampling speed: 24MHz OSR=12 Thanks a lot.
Two LNA in RFIC is designed to handle 900MHz and 1900MHz. To get low noise, there is no way to use cascade LNA in RFIC.
my opinion is when a few limiting amplifier cascade together, the gain will increase from first stage to the last stage. As gain increase, the miller capacitance also increase according to formula cgd(1+A). This will form a even lower frequency pole as incresing stages, f=/2pi. RC. The output of the last stage will be the dominant pole or the firs
Hi everyone. Need some advice from you all. Basically when we cascade amplifiers we faced the problem of bandwidth shrinkage. Is there any way where i can resolve or at least reduce the bandwidth shrinkage. From the text books for example Franco and such we can find numerous formulas to have the widest bandwidth however (...)
This is quite wideband and cascade connections may not give this bandwidth and power level. Instead of that, "distributed amplifier configuration" should be used. For this kind of amplifiers, there are lots of document and paper. But it's quite difficult to implement.
RF System Calculator This is a excel spreadsheet that analyzes cascaded stages in Receivers and Transmitters. The cascade analysis includes Noise Figure, Gain, intercept point, power input/output, SNR (in a given bandwidth), etc. A main signal can be present as well as a pair of interfering signals for analyzing off-channel IM3 rejection (...)