18 Threads found on edaboard.com: Disadvantages Of Opamp
What are the disadvantages of subthreshold PMOS opamps?
Electronic Elementary Questions :: 16.08.2006 00:25 :: jc2 :: Replies: 1 :: Views: 880
I would like to know the advantages or the disadvantages of an opamp used in the feedback or feedforward circuitry. Also, is there a change in gain when opamp is used in the above two configurations.
I have attached an example which shows a feedback and feedforward circuit. The values of the resistors are just an example.
Analog IC Design and Layout :: 31.10.2007 06:23 :: hemant03 :: Replies: 0 :: Views: 555
can anyone tell me about the advantages and disadvantages of opamps designed with bjts vs and that designed with CMOS???
Analog Circuit Design :: 03.07.2008 07:31 :: rajanarender_suram :: Replies: 3 :: Views: 1496
I am going to design a Low-voltage opamp. I don't know whether I should use single supply or dual supply. Can somebody talk about the advantages and disadvantages of single supply and dual supply? Thank you in advance.
Analog IC Design and Layout :: 09.11.2004 13:58 :: isaacnewton :: Replies: 2 :: Views: 1533
hi there, please tell me how do this shunt regulator circuit work, and what is the advantages and disadvantages of this circuit??
thank you :)
Electronic Elementary Questions :: 20.10.2005 23:19 :: zhi_yi :: Replies: 9 :: Views: 3716
What are the different types of processes in CMOS? What are their advantages and disadvantages? I have heard of N-well, pwell processes but don't know much about the processes.
Also, could someone please give me some idea about constant Gm circuits. Why are they used etc?
Appreciate the response.Thanks.
Analog Circuit Design :: 20.04.2006 07:48 :: suhas_shiv :: Replies: 1 :: Views: 440
what are the advantages and disadvantages of folded cascode amplifier??
Can be designed rail to rail input voltage.... low output swing... high output impedance.....what else??
Analog Circuit Design :: 25.04.2007 06:39 :: ashishjain_1000 :: Replies: 6 :: Views: 6130
what are the advantages and disadvantages if an amplifier has
i) high input impedance
ii)high output impedance
iii)low input impedance
iv)low output impedance
which of these is better ?
Analog Circuit Design :: 24.05.2007 07:18 :: engrbabarmansoor :: Replies: 9 :: Views: 491
as far as i know each and every op-amp has its own advantage and disadvantages and so you cannot say a particular op-amp is better than the other..... it is purely based on ur purpose (trade-offs).... for example a op-amp best in slew rate may not best in power consumption... it is something like that.....
Analog Circuit Design :: 22.06.2007 01:30 :: A.Anand Srinivasan :: Replies: 6 :: Views: 658
Yes you can, as long as the CMOS process is P-Substrate based with N-Well. All you need to do is create separate wells for each of your PMOS devices (keeping in mind all DRC rules).
There are a couple of disadvantages though. First one is that the area of your design is going to be much larger because the distance between the wells of your devic
Analog IC Design and Layout :: 05.12.2008 12:47 :: diemilio :: Replies: 3 :: Views: 593
OTA is basically an opamp with high output impedance, meaning no output buffer.
Advantages: Generally greater bandwidth than opamps.
disadvantages: Cannot use low impedance loads. Generally OTAs are used only for capacitive loads, since DC current is zero.
A MOSFET's gate for example is a capacitive load, so you can use OTAS if (...)
Analog Circuit Design :: 04.05.2010 15:43 :: fcfusion :: Replies: 3 :: Views: 1203
Most of the opamp based audio filters, I-V converters, differential to
single ended converters, preamps, buffers use +/-12V or +/-15V supply
though the opamp can be operated from as low as +/-5V. Is there any
benifit of using higher volatge power supply for opamps used
particularly in audio related circuits? I have AD797 for (...)
Analog Circuit Design :: 27.09.2010 09:35 :: Mahen K :: Replies: 1 :: Views: 452
I have read a great deal of articles, and evaluated several varieties of charge pump cell in both CMOS & bipolar - has anyone else studied or built charge pumps? I'd like to open a discussion.
I'm talking mostly about integrated charge pumps, suitable for 100-200uA of high voltage generated inside an IC. The applications are:
-Hot swap and s
Analog IC Design and Layout :: 13.07.2004 21:24 :: electronrancher :: Replies: 2 :: Views: 1092
To compensate the PWM mode buck converter,which topology of the Error amplifier is better? weather Gm-based(folded cascode) or voltage amplifier(two stage opamp)? what difference do they make in compensation? what are the advantages and disadvantages using those topologies?
Analog Circuit Design :: 04.01.2006 04:49 :: Chethan :: Replies: 8 :: Views: 1297
what are the advantages and disadvantages between
N+ diffused resistor
P+ diffused resistor
Analog IC Design and Layout :: 07.12.2008 23:28 :: bharatsmile2007 :: Replies: 7 :: Views: 5433
referring to this schematic
one question arise in my mind
this person is using three stage amplification to get the gain of 1000
what if some one uses just one stage to get the same gain
like using 1k and 1000k resistor
Analog Circuit Design :: 28.08.2009 01:16 :: malik_123 :: Replies: 4 :: Views: 3709
here is my u mean connect the voltage divider at the output of the op-amp u17.
I don't know if it is important for you, but your circuit has some disadvantages:
Amplitude/frequency of the produced signal depend on power supply voltages and the opamp type.
Hobby Circuits and Small Projects Problems :: 09.01.2010 07:50 :: LvW :: Replies: 10 :: Views: 2874
Inverting Op-Amp 1 with Rf=1kOhm, Ri=1kOhm. Gain = 0dB
Inverting Op-Amp 2 with Rf=0.1kOhm, Ri=0.1kOhm. Gain = 0dB
How much is the output impedance of Op-Amp 1 and Op-Amp 2?
Non-inverting Op-Amp 1 with Rf=1kOhm, Ri=1kOhm. Gain = 6dB
Non-inverting Op-Amp 2 with Rf=0.1kOhm, Ri=0.1kOhm. Gain = 6dB
How much is the output impedance of Op-Amp 1
Analog Circuit Design :: 01.11.2011 03:44 :: satheeshvelu :: Replies: 1 :: Views: 442