A kind of small size integrated device is introduced based on small size and Low power consumption micro controller unit（MCU） of surface mounted devices（SMD）footprint

successive approximation A/D device and flexible front measuring circuit.It is suitable for digital programmable and intelligent multi-parameter measurement for all sorts of common industry control signals.This design can apple to the measurement of voltage

heal electric potential

resistance and frequency;accuracy is 0.2 %

0

.3 %.The products with design is suitable for many input signals and can realize auto-shifted measuring range and fully automatic digital tuning functions.