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Thanks for your reply.
If I use two separate current sources Iss1 FOR M3 and Iss2 for M17 & M18 keeping transistors M14 and M15 in triode. and vary Iss2 for varying the resistance of M14 and M15.
Because when I am simulating this and varying Iss2 of M17 and M18 keeping Iss1 of M3 constant ...
Can ISS of M17 and M18 be varied so that we can vary the resistance upto a certain extent in such a way that the transistor M14 and M15 remain in triode?In stead of scaling M16 so that we can make it tunable?
I am also working of source degeneration MOS adn I think this thread is quite old but I still feel like posting. you said that vgs =vth. Do the size be kept larger of M16 to make vds small. I think the drain and sources of M14 AND M15 should be at the same potential.?
Thankyou for your reply. This reuse term I cant understand. How is it reused because the current in MB2 is 0.5IB flowing into the path of MB3 and mirrored to ma3. where is it reused aagain.? It is used for the first time.
Is this enhanced gm going to reduce noise?
Hi
I have gone through a research article for flicker noise reduction Its mentioned in that research paper that recycling folded cascode reuse current and enhances transconductance saves power. Can some one help me in understanding how current is resused.
Thanks
When I am simulating a single OTA I am getting 410mV at the output when I am using it with negative feedback (two OTAs) I am getting 770mV at the output of first OTA why is it so I couldnt understand. My supply voltage is 800mV and DC output voltage should be at the mid of the supply voltage...
Hello
I am simulating a fully differential OTA. The setup is shown in the figure with the output wave form. I have connected the op-amp in unity gain negative feedback but the circuit is showing a gain. I have applied 200mV differential input. the output should also be 200mV but I am getting...
hello
I want to know about OTA electronically tunable property. I have read that OTA has advantage of being electronically tunable over op-amps.
OTA can e electronically tunable by varying its biasing current which helps in tuning cutoff frequency of filter or gain in amplifiers. Why OTA is...
Re: How Bulk driven MOS works and reduces threshold voltage
It means I can fwd bias the parasitic diode between the body and source?. in bulk driven technique, the current is flowing through the body to source?
Re: How Bulk driven MOS works and reduces threshold voltage
For a PMOS, In bulk driven, gate is applied with a voltage less than VDD. Lets say the source is at a potential 0.4 V and drain is at let say 0.1V then it means I have to apply a voltage at the bulk greater than the source voltage i.e...
Hello
I want to know for continuous time filters mostly OTA-C filters are used but why not OTRA (Operational transresistance amplifier) ? especially for low frequency applications(biomedical) OTRA are not used why?Is there some complexity issue? similarly op-amps are also not preferred.
Can...
can anyone help me in understanding what is the advantage of using flipped voltage follower instead of a normal source follower. I have read its output resistance is further reduced. How is it reduced? whats happen in flipped voltage follower that reducing output imepdance. What else is its...
In literature it has been mentioned that using self cascode output swing is increased compare to a normal cascode. Its voltage drop vdsat is equal to a single transistor. The cascode device size in self cascode is kept larger.
Something unclear
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