I want to convert my output of 1 bit ADC to n-bit parallel. Which Digital Filter works best in this case? Any ideas how to design it?

 

You say it is a 1-bit ADC, but then you say it is PWM. Which is it?

 

You say it is a 1-bit ADC, but then you say it is PWM. Which is it?

I want to convert the output of my 1 bit Delta Sigma ADC to n bit parallel

 

Just put it through a IIR or FIR filter at the delta-sigma sampling rate.

 

Just put it through a IIR or FIR filter at the delta-sigma sampling rate.

How do I design it using electronic circuits

 

How do I design it using electronic circuits

You use a microprocessor capable of operating fast enough to perform the digital filter function.

But it's a lot easier just to use a sigma-delta A/D IC.

 

How do I design it using electronic circuits

You don't. It needs a microprocessor.

 

You don't. It needs a microprocessor.

I must design it with electronic circuits and I am unable to figure it how because the substrate here is glass and embedding chips is not possible

 

You use a microprocessor capable of operating fast enough to perform the digital filter function.

But it's a lot easier just to use a sigma-delta A/D IC.

I must design it with electronic circuits and I am unable to figure it how because the substrate here is glass and embedding chips is not possible...
So I need to make use of circuits to build a digital filter

 

IMHO you are wasting your time with a digital filter after the conversion. If you knew what you were doing, you'd have an analog front-end filter before the conversion.

 

the substrate here is glass and embedding chips is not possible...
So I need to make use of circuits to build a digital filter

So how were you thinking of building a digital filter circuit without chips?

 

So how were you thinking of building a digital filter circuit without chips?

Chips cannot be embedded on glass so I was trying to figure out how?

 

So how were you thinking of building a digital filter circuit without chips?

Maybe he has a chip fabrication process that uses glass as a substrate. I think(?) what he said is that he cannot embed existing dice on the glass substrate.

 

Maybe he has a chip fabrication process that uses glass as a substrate. I think(?) what he said is that he cannot embed existing dice on the glass substrate.

It is flat panel display..so I can build the circuits at transistor level with passive component but cannot solder the chips on glass

 

A 1st order IIR filter can be from a D-type latch, a multiplier and an adder. If you restrict your coefficients to negative powers of two, the multiplier can be replaced by a barrel-shifer.

 

A 1st order IIR filter can be from a D-type latch, a multiplier and an adder. If you restrict your coefficients to negative powers of two, the multiplier can be replaced by a barrel-shifer.

Could you please support me with a block diagram or circuit diagram on how this is connected or is it connected like D-latch ->multiplier -> adder in series.

 

You need to read a tutorial on how digital filters work.

 

Hi Raj,
Read this tutorial PDF.
E

 

This is a useful calculator:
https://www.earlevel.com/main/2013/10/13/biquad-calculator-v2/
The simplest filter you can make is by selecting "one pole lp" from the list.
If you choose the frequency such that b1 = -1/(2^n) then all the multiplications can be done with a barrel-shifter.