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1000 Threads found on Inverter Rise Time
Hi Both n-mos and p-mos widths are minimum widths(that means we cannot folde it to decrease the rise time ) then To maintain the equal rise time and fall time to the inverter What are the steps your going to tack ? Thanks Sivakumar
hello... i need to design an inverter in microwind. the requirement is that the interver should have equal rise time & fall time.. .... how can i manage this (changing w/l ratio or what)? please help
Because of the (W/L) which is the width over the length factor. You are changing P MOS width rite? But the Kr changes. It will change the voltage transfer characteristic of the inverter. From there only,you can see the fall time and rise time.
I designed an inverter in TSMC 0.18um process. NMOS is 900nm/200nm X2. it can contain 2 contacts. and PMOS is 2.7um/200nm X2. So the width of PMOS is three time than NMOS. this inverter drive 10fF capacitor and an another inverter. . rise time and fall time are equal (...)
hi,there i am working clock circuit with cmos logic gate,i.e,inverter,nand2,nand3,nor2,and the high level is 1.2v with low level 0v. i want to set the rise time and fall time of them to a equal value. so i short the input of them and give a vdc input and run the dc analysis while sweeping the input from 0 to 1.2v. then (...)
rise time is a function in both Ron of the transistor as well as CL As the technology scales, the parasitic capacitance of the inverter (basic digital block for eg.) goes down. However, the on-resistance does not scale on the same ladder.... RO
Hi all. Can you tell me why we should equate the rise time and fall time of a standard cell ? Like a inverter, we usually draw a pMos 2 times wider than nMos to ensure the rise time is matching the fall time. Thanks!
When M0 an M1 turn on, the threshold voltage in Fig(a),(b) is low. When M0 and M1 turn off, the threshold voltage is high. But in Fig(b). I want to know how to find out the rise time and fall time in Fig(a) and (b). Which one is larger? Assuming there are parasite capacitor in MOS. I couldn't calculate out the rise (...)
When M0 an M1 turn on, the threshold voltage in Fig(a),(b) is low. When M0 and M1 turn off, the threshold voltage is high. But in Fig(b). I want to know how to find out the rise time and fall time in Fig(a) and (b). Which one is larger? Assuming there are parasite capacitor in MOS. I couldn't calculate out the rise (...)
I need to send a 40MHz signal from one board to a FPGA board. The cable is less than 1 feet, could be made as short as 6 inches. But the total length including onboard trace will still be about 1 feet. I am pretty worried about the risetime, it is about 2ns. This risetime will give me certain reflection (...)
whats the difference between rise time or fall time and Rate of change? they both look the same a straight diagonal line across the division on the oscilloscope so whats the difference?
hi there, can anyone tell me an an opamp type that give me a fast rise time and low noise? Thank you. I appreciate your time and help tx
dear all : I design a all-digital dll now, I use inverter as delay cell, but when i simulate each stage of inverter , the delay time is different, even when the input different clock, the delay time is different, too. Can any help to solve it or tell how to simulate inverter delay (...)
hai everyone how can you relate rise time and fall time with probability of error or bit error rate...... a little bit explanation with equations is required
How to calculate the correct pull-up resistor value? how does my pull-up resistor affect the rise time of the signal? If i add a pull-up will there be variation in rise time and fall time and do i need to compensate it?
Hi, How can I calculate the rise time of the crystals on a PCB? Thanks
HI i am facing some problem with respect to rise time of the clock. My board is not working with one batch of oscillators.wheras it is working with other batch of same osc. The only difference between both are working one are with ristime:2ns and the problem one ristime:1.8.. can any one (...)
Hi, there... I have a difficult problem from my college... How to proof cascade rise time on scope mathematically...?? We know that the formula for cascade rise time combination is .. tr = √ta?+tb? How to proof it theoritically...?? Please help me... I have search in google, but it use central (...)
how to get the value of the capacitor across the output of a driver? Please see the ckt attach. please let me know if you need some more information in order to answer my question. Thank you very much!
What is the rise time range of DDR SDRAM and DDR2 SDRAM memory? Thank s.
I want to give a step signal with rise time 50ps and fall time of 50ps. How to set these in simulink for a step input
tr × BW = 0.35 I want know reason. Thanks.
could someone please help to describe why number 0.35 is applied in rise time? thank you in advance.
Hi, all I am designing a LVDS receiver, the spec says that the rise time of the received signal is 400ps, and the rise time of output should be also 400ps, is it reasonable? because I think there must be some delay for the output because of the charging time, or is there any method to get a (...)
Hi all! could you please tell me what should be the rise time and fall time of input pulse for measuring dynamic power of digital circuits. i have observed that power dissipation depends upon the rise time and fall time of input signal in hspice simulation.
sorry I want to decrease the rise time of signal on differential trace is there any trick i can play with layout to increase it
Hi all, I have been trying to create a circuit that has a very fast rise time (in the order of 10ns) but with a relatively slow fall time (prefereably as high as possible in the range 500ns to 4ms). The reason for this is so that I can drive an RLC circuit with a positive going edge only (which needs to be fast) and for it to ignore (...)
my target is to achieve the 1 MHz ttl Clk with 5n seconds rise time and fall time. may kindly inform me the ATmega16 microcontroller i\o ports rise time, fall time and on time thankx
The IC i am using doesn't support fast supply voltage rising, rise time must b controlled over 1ms can I use RC ckt with o/p across C ?, it won't affect Ic's current supply.
Hello, Everyone. I am troubleshooting a problem with a carrier board with a controller on-board. There are two revisions of this carrier board with two different controllers due to the original controller being discontinued and replaced with a new mostly identical controller. I have confirmed with their engineers that the controllers' are iden
dear all, Greetings, i want to know the difference between rise time ,fall time and turn on delay, turn off delay in transistors. and how it affects something like speed control motors. i mean if i need the motor to be run at specific frequency and my delay is 10ns for this particular frequency. do i have to look in the transistor's (...)
Hello everybody, I am studying electronics at university, and, during the course of "electronic measurements" I encountered the following formula for the calculation of the the rise time of cascaded blocks: tr_tot = sqrt ( tr_1 ^ 2 + tr_2 ^ 2 + ... + tr_n ^ 2 ) where tr_tot is the total rise time, and tr_i is the (...)
Hi guys Can anyone prove to me how equation 10 comes about in the following link that I have attached. It is about current rise time. Seems simple enough. Trying to calculate the required bulk capacitance at the input of Buck converter so that voltage dips are minimised, I wa
Hello, I have a GPS module, an FPGA spartan 3 development kit and a voltage switch 3.3v -10v and vice versa. I need to take the 1 pulse per second (PPS) which is coming from the GPS and change its width 80?s to 20?s, rise time to 20ns max and amplitude from 3.3v to 10v. Everyone is connected to each other with wire wrap. The width convert
what do we mean by turn-on delay time and turn-on rise time in MOSFET datasheet. Is there any difference? i am referring to 75N75 N-Channel MOSFET
Hi, I'm trying to understand the EMC problems that can arise from digital circuits. I've one board where there is an SRAM part number IS61WV25616BLL-10BLI operating at 3.3V
Hi all, How will change in rise time/ fall time effect rise delay and fall delay? Eg: rise time=fall time = 100ps rise delay=12.82 fall delay=10.12 and when rise time=fall time = 700ps (...)
Hi, all Does anybody know when the photodiode datasheet says, a photodiode has a rise time of, i.e, 5ns. It means "transit time is 5ns" or " together with the RC network (50ohm load)", the whole rise time is 5ns? Thanks in advance
can someone address a way or solution to improve jitter(pp/RMS) performance and improve rise time over 10G data rate, Thank you
Hi Is there is relation between slew rate and rise/fall time of a linear signal. In reference clock AC timing specification of a datasheet of a switch, Minimum slew rate is 0.7V/ns whereas in the crystal oscillator datasheet maximum rise/fall time is 6ns (20% to 80% of 2.5V). Can i use this crystal oscillator for this (...)
I was trying to get the rise time from IBIS file. The IBIS file has rise time measured from 20-80%. To get the 10-90% rise time, I just multiplied the denominator(time) by 0.6/0.8 How come the buffer output voltage takes the same time to change from 0V (...)
Can anybody give me the complete derivation of rise and fall time equations of a cmos inverter?
How can I find rise and fall time of output signals from XILINX FPGA ? Will it generate any file after synthesis which will provide this sinformation ?
If I want to measure my dac, my inputs are pulse function. How many are rise time and fall time of my input singals? If rise time or fall time is 0.1p,it may not be produced. How many is it and it will be resasonable.
How do i measure rise time ? Do i set the time per division on the oscilloscope until the Ramp the diagonal line fill the 8 divisions on the oscilloscope ? So if the diagonal line goes aross the 8 divisions do i just count 8 divisions Multiple the time per division setting to get the rise (...)
in my opinion,normally the propagation delay and the rise/fall time are two parameters that have no directly relation, the propagation delay is for speed, while the rise/fall time is for signal quality, that the propagation delay is bad does not mean the rise/fall time is bad. but for (...)
hi all, i want to know what's the reasonable rise & fall time for a normal oscillator working at around 200MHz to 300MHz? the oscillator may not need to be a state of the art one; just a normal one can do the work thank you! c.m.
Hi Folks, Can someone please guide or send across documents related to via ( drill and pad dia) size for 5ns fall and rise time in Fast transient test (Emc)? What one need to look for while conducting this kinda test? Suggestions and advices will be appreciated,Advance thanx. -Ramesh
why we take vdd/2 as a switching point in inverter
it is often said in the inverter PMOS should be sized 2 or 3 times larger than NMOS, because PMOS has low mobility.----the inverter threshold voltage can be shifted to the middle, and the inverter is more symmetrical in terms of transition times, right? In my circuit, when I size the PMOS and NMOS the (...)