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Recent content by nishanthpv

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    setup of SpectrumMeas function

    Hi, Can somebody help me to setup SpectrumMeas function in Viva calucator of IC6.1.4 (of cadence) for my sigma delta adc of first order?. My input frequency is 20 Hz and sampling frequency is 1 KHz.
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    Resolution of a sigma delta modulator

    Hi, Can somebody help me with a procedure to find the resolution of a sigma delta adc (single bit quantizer) ? Thanks in advance, Nishanth
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    how to include UMC180 technology files in mentor graphics

    Hai, I have some designs in UMC180 nm technology in cadence. Also I have technology library files for UMC180 nm technology. I wanted to set up UMC180 technology library for mentor graphics and I also want to import my designs to mentor. I request humbly to help me. Thanks n advance Nishanth
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    Problem in PSS Convergence

    I designed one 4th order switched capacitor biquad filter in UMC 180 nm technology using cadence software (version 5.10.41).This circuit is operating on a two phase non overlapping clock generator (i/p frequency = 1 kHz). To simulate this circuit I used, PSS and PAC analyses in Spectre RF...
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    load capacitance for 1.8 v saturation design op amp in 18 nm technology

    How to choose load capacitance to prepare test bench for the simulation of 1.8 v saturation design opamp (miller type 2 stage)? If some procedure is there somebody can tell it to me (Even if not the exact value, but the range at least)? How to choose load capacitance such that it won't affect...
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    positive and negative plates of MIM capacitor

    How to distinguish the positive and negative plates of a MIM capacitor in layout as well as in schematic ? using a lengthy or small metal 6 layer which is preferred for connecting? I found that it is good to put metal layer contacts outside the capacitor. Is this right? I am here adding one...
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    fingering of mosfets

    what we need to consider as a rule of thumb while fingering?. What i only know is gate resistance of the finger should be less than inverse transconductance associated with the finger. Is this rule enough? If somebody explains it with an example, i will be happy. Thanks in advance, Nishanth
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    [SOLVED] how to calculate gate resistance of a mosfet

    I am using umc 180 nm technology. sheet resistance of poly is 8 ohms/square.(it is written so in the technology file). for a 1u length and 1u width mos transistor (fingures=1), what is the gate resistance?(I don't know what is meant by /square) Thanks in advance, Nishanth
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    av_extracted view is not generated

    These are some screen shots of my RCX window. https://obrazki.elektroda.pl/78_1340272161.png https://obrazki.elektroda.pl/66_1340272161.png https://obrazki.elektroda.pl/25_1340272161.png
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    av_extracted view is not generated

    i correctly did DRC,LVS,RCX using assura in cadence. But the extracted view of layout is coming as blank in virtuoso layout editor. Help me please?
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    Problem with virtuoso layout editor

    Hai, I have a problem with virtuoso cadence layout editor. I used to generate layout from schematic in the following way. From virtuoso schematic editor Tools - Design synthesis - Layout XL - open a new layout view. Then from virtuoso layout editor Design - Generate from source. So the...
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    Use of hierarchy in layout

    Hai, I want to make the layout of a delay element. So first i made the layout of an inverter. And i used the symbol in the schematic of delay element and from that i generated the layout. Next i want to do some optimization using hierarchy. For example i wanted to make the nwell common for...
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    Cadence not working properly

    Hai, I am accessing cadence via x manager. But when i tried to start cadence, it is simply getting hanged. Can anybody give me a solution?...
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    Preamplifier noise specifications

    Hai, I want to calculate the following two quantities for my preamplifier with cadence tool. Can anybody give me the procedure? 1. Total input referred noise voltage Power Spectral Density @1Hz & @100Hz. 2. Total input referred r.m.s noise voltage (1 Hz - 100 Hz) Suggest me...
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    calculation of equivalent input noise

    Sir, here i am adding the images. Now i believe that somebody can give an explanation

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