Temperature sensor A/D converter circuit

Published:2011/6/22 20:56:00 Author:TaoXi | Keyword: Temperature sensor, A/D, converter | From:SeekIC

In the microcontroller temperature measurement system, you need to change the analog quantity of the AD592 into the digital quantity through the A/D converter, then the digital quantity is sent to the single-chip microcomputer to be processed. The A/D converter circuit of the AD592 is as shown in the figure, this circuit uses the AD670 for the 8-bit A/D conversion. The AD670 belongs to the 4-port differential input, it is designed as the 8-bit A/D converter which is composed of the input attenuator, the measurement amplifier and the reference voltage source. The four analog input ports are divided into two groups, every group has the attenuator which is composed of the 1kΩ and 10kΩ resistance.



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