8-8it Vs 10 bit ADC

Status
Not open for further replies.
F

fantabulous68

Member
1. An output has pulses that are as much as 0.01 volts. This value may come across as being insignificant but when reading certain sensors with an 8-bit Analogue to Digital converter, these pulses can change the 8-bit value as much as 2.

How will a 10 bit ADC improve this value? Just by providing better resolution?
 
If your 0.01 volt signal changes a 8 bit ADC by 2 then
it will change a 10 bit ADC by 8. (4x)
 
As suggested, it gives you four times the resolution - but why not just amplify the signal anyway?.
 
not just amplify the signal anyway?.
Click to expand...


lol Nooooooooooo, i Want to get RID of that 0.01V "spike" (output voltage from sensor) which results in noise/inaccurate readings. Sorry i was not clear in the problem statement. I know i should use a capacitor. I just wanted to know the affect on the measurements that result from using 10-bit ADC on output of a sensor as opposed to 8-bit ADC


Thanks.
 

Fairly obviously, four times the resolution gives four times the change - the best way to get rid of it is at the source, if you can? - where is the spike coming from?.
 
You'll also need to ensure that your analog reference voltage is clean as well as the analog ground. Noise can enter into the ADC readings just as easily there as from the input pin.
 
Status
Not open for further replies.

Similar threads

P
Is HM-10 RX pin receiving data to be transmitted?
Replies
14
Views
2K
Nigel Goodwin
J
  • Question
Why External Steering Request (XSR) J1939 message has checksum message within the 8-byte Data Field?
Replies
1
Views
1K
Diver300
D
W
  • Question
ESP32 30pin vs 38 pin boards
Replies
0
Views
3K
Wp100
W
  • Question
16-bit multiplication in Assembly
Replies
12
Views
2K
Peet19
AVR Code for Dividing 32-Bit Register by 8-Bit Register
Replies
0
Views
1K
Kerim
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…