Maxim Integrated MAXREFDES67# Micro PLC reference design

Industrial automation engineers can now achieve accurate measurements for their system designs with the MAXREFDES67# analog front end (AFE) universal input Micro PLC reference design from Maxim Integrated.

As high-resolution systems move to higher bit counts, they become more sensitive to noise, making such systems difficult to build and maintain accuracy. The 24-bit AFE reference design overcomes this challenge. Capable of accepting four different signals, the universal analog input requires no jumpers and is 100% software configurable.

Advantages include: effective resolution up to 22.3 bits, with temperature error as low as ±0.1% across a range of -40 to 150°C; a Beyond-the-Rails signal chain, which reduces board space and component count; and universal input, which accepts four different signals — voltage, current, resistance temperature detector (RTD) and thermocouple (TC).

To meet Industry 4.0 requirements, Maxim partnered with Wurth Electronics Midcom to customise a power isolation transformer that is energy efficient and compact enough to fit in Maxim’s credit-card-sized Micro PLC form factor.