AD conversion voltage compatibility module dual road 0 to 5V linear to 0 to 3.3V 51/STM32 modulus converting

1. Product introduction

In the process of electronic products and DIY design development, we often use the A/D conversion (modulus conversion) function, and often encounters the problem of the sensor output signal level without matching the control system A/D conversion level signal.For example, some sensor output signals range in the 0 ~ 5V interval, while the reference voltage of the STM32 series single -chip microcomputer A/D is 3.3V. At this time, the level of level signal compatibility will occur.To this end, we launched this dual -way modulus conversion voltage compatibility module.

This dual -way modulus conversion voltage compatibility module can realize 0 ~ 5V voltage signal linear equal ratio to 0 ~ 3.3V voltage signal.This module uses a high -precision rail precision calculation amplifier, which can achieve front and rear -stage circuit impedance matching and accurately realize the level signal conversion.This module is plugged in and supports the two -way voltage conversion. The output of the access circuit to the module to be tested can be obtained at the corresponding output end of the 0 ~ 3.3V range.Development brings great convenience.

3. Technical indicators

Power supply voltage: 5.0V output signal range: 0 ~ 3.3V conversion accuracy: Shi 0.01V

Module size: 36mmx22mm

Features:

(1) Double -road level signal conversion;

(2) High converting accuracy, which can achieve front and rear circuit impedance matching