The STHS34PF80 sensor from STMicroelectronics is an uncooled, factory-calibrated, infrared motion and presence detection sensor with operating wavelength between 5 µm and 20 µm.
STMicroelectronics infrared sensors have been designed to accurately detect object movements and sense human presence by measuring the infrared radiation of objects within their field of view. There are several different technologies to support infrared-based sensors, and ST offers the TMOS infrared sensor solution to detect human or object presence and movement detection with high accuracy and low-power consumption, directly with a digital interface.
The STHS34PF80 infrared sensor is based on TMOS technology which stands for Thermal MOS. It works by integrating the infrared radiation emitted by objects in its field of view (FoV) and then concentrating this radiation onto a MEMS-thermally-insulated gate using ST's state-of-the-art MEMS technology.
TMOS technology sensors feature an isolated MOS transistor array, when the infrared radiation reaches the gate of the array it biases the MOS transistors which can then be used to remotely sense temperature of objects or people. This innovative technology offers many advantages to system designers since it shows much greater sensitivity with respect to other competing technologies like PIR, furthermore it has the added capability to sense non-moving targets. These two key benefits enable new and improved applications and can provide significant system cost reductions, by removing, for example, infrared concentrators like Fresnel lenses typically needed for such competing technologies.
Block Diagram
The STHS34PF80 sensor has been designed to measure the amount of infrared radiation emitted from an object within its field of view, the sensed information is then digitally processed by an onboard ASIC, which can be programmed to monitor motion, presence, or an overtemperature condition. The STHS34PF80 has exceptional sensitivity and can detect the presence of a human being at a distance up to 4 meters without the need of an optical or fresnel lens.
The STHS34PF80 TMOS sensor is suitable for a wide range of applications including Industrial automation, Predictive maintenance, Smart home/building control and monitoring, Lighting, Energy saving appliances and Security.
The TMOS Sensor is housed in a small 3.2 x 4.2 x 1.455 mm 10-lead LGA package and has an operating temperature range of -40°C to +85°C.
Evaluation Board
The STEVAL‑MKI231KA demonstration board is available to support system designers. The demonstration board is a kit made up of a PCB, mounting the STHS34PF80 low-power, high-sensitivity infrared sensor for presence and motion detection, which is connected through flat cable to a generic adapter board (STEVAL‑MKIGIBV5) to make it compatible with the STEVAL‑MKI109D. A plastic holder with a Fresnel lens (TMOS63-10) is also provided in the kit to verify best performances of the device.
The STEVAL‑MKIGIBV5 can be plugged into a standard DIL 24 socket. The kit provides the complete STHS34PF80 pinout and comes ready-to-use with the required decoupling capacitors on the VDD power supply line. This adapter is supported by the STEVAL‑MKI109D motherboard, which includes a high performance 32‑bit microcontroller functioning as a bridge between the sensor and a PC, on which it is possible to use the downloadable graphical user interface (Unico-GUI), or dedicated software routines for customized applications.
It is also possible to plug the board into the X‑NUCLEO‑IKS02A1 or X‑NUCLEO‑IKS4A1. The kit is included in the X‑CUBE‑MEMS1 expansion software package for STM32.
Anglia are offering customers a FREE evaluation board and samples of the STHS34PF80 low power TMOS Infrared Sensor from STMicroelectronics, please fill in the form below to register your interest now.
Free samples are subject to availability.
STMicroelectronics has once again raised the bar in motion sensing with the launch of the LSM6DSV320X which is like no other IMU, designed to monitor and safeguard users in their individual surroundings and contexts.
Sensirion has introduced the STCC4, a revolutionary miniature sensor poised to redefine how we monitor indoor air quality.
Omron’s award-winning G9KA-1A-E relay family is redefining high-power switching for energy applications. Engineered for performance, safety, and compactness, this flagship SPST-NO relay handles up to 300A at 1,000V AC, making it ideal for EV chargers, UPS systems, and industrial inverters.
Discover the latest in efficient power conversion with the cost-effective STMicroelectronics DCP3601 buck converter and the STEVAL-3601CV1 evaluation board. The DCP3601 delivers up to 1 A load current across a wide 3.3 V to 36 V input range, making it ideal for diverse industrial applications. Its 1 MHz fixed switching frequency enables compact designs, while advanced EMI management and robust protection features ensure reliable operation even in demanding environments.
The Omron G6QG is a cutting-edge, compact PCB-mounted power relay engineered for high-performance switching in space-constrained environments. It stands out as the smallest relay in the industry capable of handling AC loads up to 480V and 55A, making it a powerful solution for demanding applications such as DC fast chargers, energy storage systems, and EV infrastructure.
The CX Series connector system from HIROSE conforms to the USB standard USB Type-C™, this standard is being widely adopted as a standard interface on many devices found in consumer, industrial and automotive markets.
KYOCERA AVX’s has expanded its 3dB 90° hybrid couplers – the DB0402 adds a miniature 0402 size package to the family which already includes the DB0603, and DB0805 series – engineered to meet the growing demands of high-frequency wireless systems across industrial, automotive, telecommunications, and telemetry sectors.