CS5532AS Schematics channel temperature logger Schematics max3370 max1673 dg409dy ADC CS5532AS MAX854 channel teardown TC08 max31855 CS5532 module Schematics temperature couple esd ovp protection ad650 ads1256 AD7740 Mechatronics Project PSN-ADC24 4-Channel 24-Bit Analog to Digital Board