Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
For spec., u can go to some microelectronic company to download their data sheet,
e.g., http://www.wolfsonmicro.com/products/digital_audio/
Also, when u design the microphone, u should also know the whole ADC channel
and other part which is connect to microphone,
e.g., the ADC is discrete...
microphone circuits design
The noise should depend on the overall SNR (for audio application, usually not very high >85, a-weighted). THD not need high >60dB.
and it may not need high gain but a programable gain (0-30dB)with some anti-alising filter.
other spec such as input swing, input...
c-weighting filter schematic
using a ideal circuit (R,C,VCVS) to implement the a-weight filter.
However, if i want to measure the a-weight noise in ADC channel,
How to implement this?
What is the overloading point of a double loop 2nd 3-level SDM overloading point?
In my simulation, it seem to be 90% of full scale (≈-1dB). But many paper say a double loop 2nd SDM only have 70% (≈-3dB). It this correct to use the Vref reference as the SDM Full scale? or we need to reference...
In some audio ADC spec, they say SNR=90dB with A-weighted filter.
But A-weighted filter is a continuous-time filter, how they process it to measure the SNR at ADC output?
sc-circuit noise pnoise
hello! How can I measure SC circuit noise using Hspice? Can I measure it by AC analysis in two phase or I need to do it on a transient analysis?
Hi!! What is a Referenced Input Noise? Is this important for calulating noise contribution in a channel with require SNR? For example, if the channel have a PGA and ADC, can we calulate the Referenced Input Noise for 0dB gain and then using this value to estimate the output SNR for different PGA...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
