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# Inl Dnl

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207 Threads found on edaboard.com: Inl Dnl

## DNL and INL analysis of SAR ADC

Hi All, I am working on 14bit SAR ADC with a sampling frequency of 5KS/s. I am supposed to do dnl and inl analysis to get information about missing codes. what I know to do dnl and inl analysis is, apply a super slow ramp so that each code appears at least 10 times. Now my problem is, I have as much as 2^14= 16384 (...)

## Source of distortion in ADCs

Hi, I have a couple of question about distortion and non-linearities in ADCs. I wonder except inl and dnl that cause distortion in ADCS, what can cause a bad THD. Assume someone wants to model the distortion in an ADC, say third order harmonic. I wonder if the extra term added to the pure signal (cos(ωt)) should be βcos?(ωt)

## How to characterize the CARRY4 primitive in Virtex-5 FPGA

Hello everyone, I am using CARRY4 primitive as delay line in my design and now I would like to characterize my design to evaluate the effect of temperature, jitter, etc. on the behavior of CARRY4 primitive and calculate and plot the dnl and inl curves. I do not know how to come and start with the characteriazation?! I know that I have to perform

## INL & DNL Calculations in Cadence Spectre

Hi guys; I've recently simulated a SAR ADC in Cadence & now I want to measure the inl & dnl of the ADC. Each conversion takes 3us. I have designed this ADC for 5 bits & therefore we are going to have 32 states in the output. I've attached my 5 bit output to a 5 bit ideal DAC so that I can compare the analog input slow ramp to the digital codes wh

## HOW CAN WE MEASURE SNR of flash ADC

i have found the inl and dnl of flash ADC in cadence... how can i find the SNR?? ANY EQUATION or in tool cadence??

## For the design a 10 bit sar adc , what should be the maximum offset of the comparator

Assume the offset is linear/insignificant (with offset-cancellation), the linearity is limited by the matching of the DAC capacitors and the DAC type (binary-/themometer-code). Binary type has fewer switches but larger dnl; both types have the same inl. Hi Guys, Regarding a 10 bit sar adc, using binary capacitance for the D

## Single-ended/differential input front-end & differential ADC drivers.

ADS1174 having ?0,0045 LSB inl Nope. +/- 0.3 LSB, which is still excellent. An inl specification includes an upper limit for dnl, by the way. SAR and SD converters have both their specific pros and cons. Obviously SD-ADC have superseded other topologies in the low and medium speed range, you are taking the dataconversion "main ro

## On DNL/INL with reduced bits

Hi, guys If I only use the MSB K bits of a nominal N bits ADC (N>K), what's the relationship between the MSB K bits dnl/inl and N bits dnl/inl. To give the question more apprehensible, assume the max dnls/inls for the MSB K bit and the nominal N bits are (...)

## LTSPICE ADC INL DNL measurement

Hi, dear professionals, I just started analog IC design. I use LTSPICE to design a flash ADC. At this stage, the dnl and inl need to be measured. Is there any method for LTSPICE? Thank you very much! Really appreciate your help!!!:-o:-o

## How to measure adc dnl inl

See e.g. MAXIM's Application Notes 283 : inl/dnl Measurements for High-Speed Analog-to-Digital Converters (ADCs) 2085: Histogram Testing Determines dnl and inl Errors or ATMEL's 110009

## In Design Rail to Rail OP AMP, How to Expand Output Linear Range ?

When I Rail to Rail OPAMP designed, I found that some opamp output range is really rail to rail. For example, BUF16820 & BUF16821 inl/dnl specification is like this. 108112 In BUF16820, when VDD power is 18V, inl measure voltage is 17V. So voltage difference of rail(VDD) and amp's output is 1V. Yes. B

## INL DNL calculation in ADC

sir i am doing 8 Bit folding 8 interpolating ADC in cadence. plz tell me how to calculate inl,dnl factor using calculator option of cadence tool. is there any other way to calculate inl,dnl factor. How to calculate noise margin and SFDR ?

## differential non linearity errors and integral non linearity errors in flash adc

The easiest way to calculate inl/dnl for adc is to used histogram method. Here You have everything:

## What is INL of a converter with missing code?

If a converter has dnl =-1, has a missing code, what is its inl?

## inl-dnl of pipelined adc

hello, i was trying to find out inl and dnl for 8 bit pipelined adc by using "Maxim Integrated's" code given on their website. but facing some errors. i just want to cross check the format of file which is required by this code. if anybody has sample file format which will work as input file for that code, pls send me as I really need it. Th

## What is typical value of INL and DNL of ADC in LSB?

What is typical value of inl and dnl of ADC in LSB? Thanks.

## linking matlab and cadence to obtain inl and dnl

I have designed a 10 bit pipelined ADc in cadence.From the wave forms I have obtained the. csv file which contains samples of the 10 digital bits and inputs. How can we link this to matlab so that these codes are read and hence the inl and dnl plots are obtained??

## how to use .csv file in matlab for INL,DNL plot

I have designed 6 bit ADC.can any one please tell me how to use .csv file in MATLAB for inl,dnl calculation. and How to get IDEAL values for error plot.

## How to calculate INL,DNL in cadence spectra

First you need to simulate the full input sweep, picking off the actual input voltage value at each code transition and subtracting from it the ideal transition value. Store all of these (0 - 2^N-1) and use either Ocean code or an external tool to process the individual bit errors to get dnl (max()) and inl (I forget, something like sum()/2^N I

## analyses of a pipelined ADC

can someone plz help me with the formulas to find the SFDR,SNDR,inl, dnl etc for a pipelined ADC in Cadence Software...

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