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2 Threads found on edaboard.com: Temperature Sensor 89c51
hi everyone im doing a project on atmel microcontroller. the AIM of the project is to sense the ambient temperature using lm35,digitize the data using adc0804 and then display the temperature on an LCD and when the temperature exceeds a certain threshold display the message and simultaneously activate a buzzer. components used are: (...)
The LM35A will give you a worst-case accuracy of ?1°C over its temperature range - clearly not adequate for your design specification. A 24-bit ADC has a resolution that is way too much for your needs. I think you should revise your design parameters... /Rambo