ADc Suggestion. - Electronic Circuits Projects Diagrams Free

lord loh. · 10th December 2005, 03:18 PM

I came across a temperature sensor called lm35 which is supposed to give 0mv to 1v across 0c to 155c (10mv/c) output corresponging to the ambient temperature.

Suppose I try to make a digital temperature display for ambient temperature, I guess I would need an ADc to display the voltage in the form of temperature.

Could anyone suggest me a simple and inexpensive ADc.

All I want to do is to display it on a 7 segment display. I might use 7447 displays and not microcontrollers.

**Nigel Goodwin** · 10th December 2005, 04:08 PM

Quote:

Originally Posted by lord loh.

I came across a temperature sensor called lm35 which is supposed to give 0mv to 1v across 0c to 155c (10mv/c) output corresponging to the ambient temperature.

Suppose I try to make a digital temperature display for ambient temperature, I guess I would need an ADc to display the voltage in the form of temperature.

Could anyone suggest me a simple and inexpensive ADc.

All I want to do is to display it on a 7 segment display. I might use 7447 displays and not microcontrollers.

By far the cheapest and easiest way is to use a PIC (or other micro-controller), an 8 bit ADC is likely to cost more than a PIC containing a 10 bit one!.

lord loh. · 10th December 2005, 04:16 PM

Okay, I guess I shall try a microcontroller then... Never programed one... But I have got a crcuit for a AVR Pod Burner...

lord loh. · 27th December 2005, 12:59 PM

The ATMEL ATmega8535 has an inbuilt ADC which has a conversion time of 60 micro seconds. This shall give a maximum sampling of not more than 16.666 KHz.

Do the expensive dedicated ADc give better results? The inbuilt ADcs shall do for a temperature sensor but to build a Digital Storage Oscilloscope?

Could you suggest a few microcontrollers with better ADcs?

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10th December 2005, 03:18 PM	(permalink)
lord loh.	ADc Suggestion. I came across a temperature sensor called lm35 which is supposed to give 0mv to 1v across 0c to 155c (10mv/c) output corresponging to the ambient temperature. Suppose I try to make a digital temperature display for ambient temperature, I guess I would need an ADc to display the voltage in the form of temperature. Could anyone suggest me a simple and inexpensive ADc. All I want to do is to display it on a 7 segment display. I might use 7447 displays and not microcontrollers. __________________ Bharath Bhushan Lohray. M.Sc. Electronics.

10th December 2005, 04:16 PM	(permalink)
lord loh.	Okay, I guess I shall try a microcontroller then... Never programed one... But I have got a crcuit for a AVR Pod Burner... __________________ Bharath Bhushan Lohray. M.Sc. Electronics.

27th December 2005, 12:59 PM	(permalink)
lord loh.	The ATMEL ATmega8535 has an inbuilt ADC which has a conversion time of 60 micro seconds. This shall give a maximum sampling of not more than 16.666 KHz. Do the expensive dedicated ADc give better results? The inbuilt ADcs shall do for a temperature sensor but to build a Digital Storage Oscilloscope? Could you suggest a few microcontrollers with better ADcs? __________________ Bharath Bhushan Lohray. M.Sc. Electronics.