CM01 CM01-A-V001 | SIS | Converter input signal module

Description

CM01 CM01-A-V001 | SIS | Converter input signal module

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CM01 CM01-A-V001 can be electrical signals such as voltage and current, or non-electrical signals such as pressure, temperature, humidity, displacement, and sound. However, before the A/D conversion, the input signal to the A/D converter must be converted into a voltage signal by various sensors.

After A/D conversion, the output digital signal can have 8 bits, 10 bits, 12 bits and 16 bits.

CM01 CM01-A-V001 converter working principle
The following three methods are introduced:
Method of successive approximation
Double integration method
Voltage-frequency conversion method

Successive approximation A/D is A common A/D conversion circuit, and the conversion time is microsecond level.
CM01 CM01-A-V001 A/D converter using successive approximation method is composed of A comparator, D/A converter, buffer register and control logic circuit, as shown in Figure 4.21.
The basic principle is to test the comparison from high to low one by one, as if weighing objects with a balance, increasing or decreasing weights step by step from heavy to light.

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