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## Differential Slew Rate |

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fully differential slew rate , slew rate fully differential , slew rate rate 741 , slew and rate

41 Threads found on edaboard.com: **Differential Slew Rate**

Can anyone help me with the hspice code for finding parameters like CMRR,GAIN,OFFSET VOLTAGE,**slew** **rate**,FREQUENCY RESPONSE for cmos **differential** amplifier

Software Problems, Hints and Reviews :: 02-06-2017 16:29 :: techie12 :: Replies: **0** :: Views: **687**

When i am doing **slew** **rate** analysis for a fully **differential** amlfier, at the output , i am not getting a proper rising or falling pulse, it's rising , falling and again rising. i tried to slove it by increasing the gain and UGB of CMFB, but it's not working. But by removing CMFB its proper. How the CMFB affects the **slew** (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 02-20-2016 02:57 :: phanikiran :: Replies: **2** :: Views: **1030**

Hello guys,
I am very interested in modeling a fully **differential** opamp with GBW, Gain and SR limitations, to analyze a 2nd-order SDM. I found the following post very helpful in this case:
Besides that, the **slew**-**rate** is not implemented, and I tried to do it, but had no changes in simulation values. I tried to **slew** the (...)

Analog Circuit Design :: 06-24-2015 15:16 :: Vitor Przedzmirski :: Replies: **0** :: Views: **1378**

I wanted to know that why do we go for **differential** pair input as compared to the pseudo pseudo **differential** pair??? I know from various discussions that my common mode rejection will be poor in pseudo **differential** but I wanted to know the comparison w.r.t other parameters like **slew** **rate** and settling time (...)

Analog Circuit Design :: 06-11-2015 06:24 :: Abhibp1990 :: Replies: **0** :: Views: **811**

Hello all,
I am designing a **differential** amplifier.
I have read definitions about gain, gain bandwidth, **slew** **rate**, ICMR, OCMR and Phase Margin, but which value of these specifications are desired for a common **differential** amplifier? (For example: gain should be 60dB or 80 dB?)
Thanks for any help in advance.

Analog Circuit Design :: 01-19-2015 08:27 :: hannover90 :: Replies: **4** :: Views: **1118**

Hi all
I am simulating **slew** **rate** of fully op amp. I set up as the way in picture below and simulatiion look ok, but I have a question about resistors value in simulation. How to decide value of resistor value? If R too large the current from vin to input of opamp will be 0 ---> the set up become ideal case (vin = vin_opamp = vout_opamp)? Thanks

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 09-12-2014 23:49 :: tompham :: Replies: **5** :: Views: **1711**

Hello all,
I am learning from books about two stage **differential** CMOS amplifiers and I'v designed one of them (see please the figure).
Now I want to find out its :
- SR (**slew** **rate**),
- setting time and as well
- ICMR/OCMR (input/output common Mod range),
but I don't know how can I simulate it to get the specifications (...)

Analog Circuit Design :: 07-09-2014 10:09 :: hannover90 :: Replies: **2** :: Views: **809**

Hi!,
We have just designed a 2 stage OTA with a cascoded **differential** pair as the first stage and a common source amplifier as the second stage. The gain is 59.3dB and we need to measure the **slew** **rate**. Can anyone please tell me how to go about measuring the **slew** **rate**?
The method that we were using is (...)

Analog Circuit Design :: 12-15-2012 22:03 :: poonamagale :: Replies: **1** :: Views: **1521**

Hi,
i've designed a CMOS folded cascode opamp to have a **slew** **rate** of 150 V/us (Iss of the **differential** pair is 30 uA and CL = 200 fF) in unity gain configuration. I found that ICL is about 1 mA.I saw current in the **differential** pair is unbalanced in one branch only for a very quick time so the capacitor can't charge like i (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 11-22-2012 13:13 :: -CAM- :: Replies: **7** :: Views: **2023**

I have used two out of phase pulse inputs with the opamp configured in unity gain configuration as in the attached picture. where all R's=1K,then i plotted vout1-vout2 and taken the slope of it,which gives a value of 3e10,it gives almost the same value when i calculate it with delta cursor.Does it mean a **slew** **rate** of 30000V/us?
or should i connect

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 05-25-2012 18:41 :: shrikant_joshi7 :: Replies: **0** :: Views: **1453**

Most probably you are experiencing **slew** **rate** limitation in the amplifier. This would explain why you see reduction in the output amplitudes when you increase the input. Do you see distortion in the output sine wave? Check the current in the input **differential** transistors and see if at the peaks of the input signal one of the (...)

Analog Circuit Design :: 10-06-2011 21:23 :: sutapanaki :: Replies: **6** :: Views: **1459**

How to calculate **slew** **rate** for **differential** folded cascode cadence can anybody tell me ....??
thanks in advance...:smile:

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 08-18-2011 07:07 :: ASHUTOSH RANE :: Replies: **5** :: Views: **2417**

I am doing the project on Modified Nauta configuration using double CMOS pair. Plz help me how to calculate **slew** **rate**, PSRR, "dc tran ac" for gain, CMRR. And plz tell me the mathematical analysis for this configuration to above parameters and **differential** output transconductance and common mode output transconductance.

Analog Circuit Design :: 08-04-2011 12:17 :: 208210022 :: Replies: **0** :: Views: **1182**

Hello guys,
How can I cancel the offset produced by transistor mismatches (monte carlo analysis) to measure the **slew** **rate** (trans analysis)? I want the offset to be cancelled for each iteration of the monte carlo analysis, but of course i cannot calculate the input-referred offset... it's different for each iteration and random.
Is it possible

Analog Circuit Design :: 01-14-2011 05:04 :: juliog :: Replies: **1** :: Views: **1947**

With a folded cascode of the first stage and common source as the second stage. How to calculate the **slew** **rate**?
The value I calculated by Itail/Cc, that is the tail current of the **differential** divided by compensation capacitance, is far different than the one I simulated. Should we consider the miller effect here? It seems the variance (...)

Analog Circuit Design :: 10-25-2010 20:45 :: ray.deng :: Replies: **0** :: Views: **1358**

Hello all,
Regarding measuring **slew** **rate** of single ended opamp its easy and straightforward, by giving a step on positive input and using the opamp in the follower configuration.
But i was thinking how would i measure for a fully **differential** configuration
Thanks and look forward for some replies!

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 09-13-2009 15:16 :: EmbdASIC :: Replies: **0** :: Views: **1717**

Hello all,
Regarding measuring **slew** **rate** of single ended opamp its easy and straightforward, by giving a step on positive input and using opamp a follower.
But i was thinking how would it be for a fully **differential** case?
Thanks and look forward for some replies!

Analog Circuit Design :: 09-13-2009 13:55 :: EmbdASIC :: Replies: **1** :: Views: **1484**

Dear all,
I want to know the effect of dc-gain, ugbw and **slew** **rate** in 2-1 MASH sigma-delta modulator. How to model fully **differential** opamp by using Verilog-A?

Analog Circuit Design :: 07-30-2009 05:54 :: shaq :: Replies: **2** :: Views: **4434**

A fully **differential** opamp could be connected in a single ended unity gain configuration. That mean that the positive output is only connected to the negative, sometimes called inverting, input. Test signal is driven into the positive input. But that could give sligtly different **slew** **rate**s.
I opt for applying an unity gain inverting (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 07-04-2009 08:13 :: rfsystem :: Replies: **5** :: Views: **7461**

I have designed a fully **differential** op amp. I do not know exactly how to measure the **slew** **rate** for a fully **differential** op amp. Generally for a single ended op amp we connect the op amp in non inverting(feed back) mode and measure the **slew** **rate**.
How to measure the **slew** (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 04-28-2009 03:34 :: bhargava834 :: Replies: **2** :: Views: **2952**

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