Product Lineup

SR300 Series (module)

Low power consumption allows
various application
including IoT.

Low power consumption
3 mW or less

Measurement resolution
1 µε

Small sized chip
2.5 mm

Item	Specifications
Number of terminals: 12	Digital: Serial in/out, chip select, clock Analog: Analog output
Power supply (VDD)	Supports 3.3 V/5.0 V
Operating temperature	-20°C to 70°C
Digital communication protocol	SPI
Minimum resolution	±1 µε
Digital output	On-board A/D converter (12 bit resolution, up to 10 ksps)
Analog output	Full scale: 0.5 V to VDD-0.5 V 8-step gain setting: 0.50 [mV/µε] to 61.0 [mV/µε]
Offset adjustment	Adjusts output voltage offset
Others	(1) On-board digital temperature sensor (2) Offset temperature drift correction function (3) Strain sensitivity fine adjustment function (4) Noise resistant due to self-contained wiring within the chip

Commercialized two types
of modules with different
chip installation angles

■Tensile-compression type: SRMS300NB

: Detection direction

: Chip

■Attachment illustration

Tensile/compression

Fixed surface

Tensile (compression)

: STREAL installation location

■Shear type: SRMS345NB

: Detection direction

: Chip

■Attachment illustration

Shear

Torque

: STREAL installation location

Evaluation Kit

Initial evaluation/PoC environment
can be easily built
on the customer side

USB connection with PC
Various sensor settings, waveform display,
and CSV output are possible with PC app.
Maximum four channels of sensors can be connected.

Features of EK-SR300-02

The size has been reduced to less than half of a business card, assuming space for evaluation and embedded applications.
Improved strain resolution with the on-board AFE (Analog Front End) circuit. (1 µε to 0.5 µε)
Equipped with 2.4 GHz band wireless module. The evaluation kit can be connected to a PC via wired or wireless connection.

Equipped with on-board acceleration sensor. You can easily feel the difference between STREAL and acceleration sensors.
The log function stores log data in CSV format on the PC. The measurement results can be easily analyzed.