# Incresing A/D Resolution

Hi there!

My question is simple:

How am i increse A/D Resolution?

for example;

TLC549 is a 8 bit serial A/D;

min value=0

max value=255

how am i make max value=9999 ?

(to increse one bye one)

bye!

## Comments

• : Hi there!

: My question is simple:

: How am i increse A/D Resolution?

: for example;

: TLC549 is a 8 bit serial A/D;

: min value=0

: max value=255

:

: how am i make max value=9999 ?

: (to increse one bye one)

:

: bye!

:

You will have to use an A/D chip with higher resolution: A 10 bit chip will provide a resolution of 2^10 = 1024, a 12 bit chip 2^12 = 4096 etc.

• : : Hi there!

: : My question is simple:

: : How am i increse A/D Resolution?

: : for example;

: : TLC549 is a 8 bit serial A/D;

: : min value=0

: : max value=255

: :

: : how am i make max value=9999 ?

: : (to increse one bye one)

: :

: : bye!

: :

:

: You will have to use an A/D chip with higher resolution: A 10 bit chip will provide a resolution of 2^10 = 1024, a 12 bit chip 2^12 = 4096 etc.

:

:

Oops!

You wanted a resolution of 10000!

You will have to use a chip with at least 15 bits for that resolution. A 16 bit chip is probably more common and provide a maximum resolution of 2^16 = 65536. The circuitry for high resolution A/D converters is very very critical to prevent even small variations in temperature from causing large inaccuracies in the conversion process.

• hi there!

thanx for answers.

but i will use max res. A/D is 10 bit.

i know 10bit=1024

12bit=4096

and other A/Ds 15,16 ... 23bit

A/D resolution is increasing some methods.

of course

for 10bit A/D

si s=sample i=indice

s1=650 s2=652 s3=651 s4=649 .... s50=654

average= (s1+s2+...+s50)/25

at this point A/D resolution increased 2times

*i look for more stable code will make this operation.

sorry for bad english

thanx for all!

• : hi there!
: thanx for answers.
: but i will use max res. A/D is 10 bit.
: i know 10bit=1024
: 12bit=4096
: and other A/Ds 15,16 ... 23bit
: A/D resolution is increasing some methods.
: of course
: for 10bit A/D
: si s=sample i=indice
: s1=650 s2=652 s3=651 s4=649 .... s50=654
: average= (s1+s2+...+s50)/25
: at this point A/D resolution increased 2times
:
: *i look for more stable code will make this operation.
:
: sorry for bad english
: thanx for all!
:
:
you can also increase ad resolution:
- using some A/D channel and a number of external component(op-amp)
- using an op-amp with a digital control of amp
bye

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