Help needed in a digital signal conditiong circuit

[Eng_SAME7]

Hello guys, hope you are fine.

I have a temperature sensor (digital) this sensor is connected to ATmega16 through I2C bus, this signal is too low, so I need to amplify it. So can I use a signal conditioning circuit ?

If yes can some one introduce to me a schematic diagram for it ??

Thanks in advance.
SAM

 

[capcas]

What do you mean by signal conditioning? You can put a differential amplifier at the output of the sensor and then feed it to Atmega16. Otherwise You will face a lot of problems if you are going to connect sensor directly to micro-controller like impedance mismatch etc.

 

[D.A.(Tony)Stewart]

Hey SAM,
I have been known to be a mind reader and suspect you picked the 1st sensor of many and never read thru the manuals nor measured your cable capacitance and signal levels at source vs destination. But ginving you th ebenefit of the doubt, why not inlude that next time and what you used for a schematic and note what you tried and failed.

Some use a 1 wire approach for local grounds and use 5KΩ pullup to 5V (1mA) but some can drive 4mA min. so 1.5KΩ is ok.

Once we get the picture and the readings, and the number of sensors (mux or dedicated) you can get some help.

 

[Eng_SAME7]

Thanks guys for your responses. Here is the diagram of the circuit of interest:



check the sensor signal (digital) and ECG signal (analog)...

 

[D.A.(Tony)Stewart]

where is sensor p/n and signal levels?
What are your specs?

I suggest this sensor and read the datasheet app notes.

**broken link removed**