What is a Sensor?

A sensor (a transducer) is a detection device that perceives measured information and converts it into electrical signals or other required output forms according to certain rules. Sensor development will focus on miniaturization and intelligence.

NuMicro M091 Series Products

The NuMicro M091 series is a 72 MHz Arm Cortex-M0 microcontroller, offering 32 KB and 64 KB of Flash, 8 KB of SRAM, supporting operation voltages from 2.7V to 3.6V, and capable of operating within the temperature range of -40°C to 105°C. This series features rich analog peripherals, including four operational amplifiers with a gain bandwidth of up to 8 MHz and input offset voltage of 50 µV; a 16-channel 12-bit ADC with a sampling rate of 2 MSPS; four 12-bit DACs; and an internal temperature sensor with a temperature accuracy of ±2°C across the full temperature range.

M091 Series Selection Table:

M091 Series Block Diagram:

The NuMicro M091 series products offer the following features, making them the preferred solution for sensor applications:

1. Compact Size

The M091 series is available in small QFN33 (4 x 4 mm) and QFN48 (5 x 5 mm) packages, meeting the demand for compact dimensions in analog sensor applications.

2.High-Performance MCU

a) Operates at up to 72 MHz

b) Supports operation voltages from 2.7V to 3.6V, with compatibility for 5V I/O

c) Includes a 16-channel, 12-bit ADC with a sampling rate of 2 MSPS

d) Four 12-bit DACs

e) Internal temperature sensor with an accuracy of ±2°C across the entire temperature range

f) Stable operation within the temperature range of -40°C to 105°C

3. Integrated High-Precision Op-Amps

a) Input offset voltage as low as 50 µV; temperature drift voltage as low as 0.05 µV/°C, ensuring high accuracy without requiring temperature compensation

b) Gain bandwidth up to 8 MHz, ensuring signal integrity after amplification

Optical Sensor Diagram: