New world´s smallest infrared sensor AK9752 from AKM

Recently the number of applications that use human presence sensors have increased, such as among IoT equipment. However, pyroelectric type sensors are hard to detect objects through glass.

This was causing design constraints in the products. Asahi Kasei Electronics Corporation, (AKM), has developed the AK9752, a human presence sensor for short range applications, (detection distance about 1m). It is capable of detection through glass and suitable sophisticated designed Portable PCs and home information products. The AK9752 integrates AKM’s original InSb quantum IR sensor element, an analog front end circuit that converts current output of the element into voltage, a dedicated thermometer to measure the element temperature, a 16-bit A/D converter (ADC), an I2C interface and an interrupt output.

Capable of detection through glass

The pyroelectric type sensors cannot detect objects through glass. AKM’s previous product, the AK9750 shuts out infrared rays under 5μm wavelength that are able to pass through glass. The AK9752 can detect objects through glass since it’s able to detect infrared wavelengths of 5μm or less with high sensitivity, achieving a detection distance of 1m with a glass thickness of 0.7mm or less. It’s capable of detecting humans through glass and is ideal for home information devices such as a glass top device without having design compromises.

Lens-less device (detection distance: 1m)

The AK9752 does not need a lens to work up to 1m detection distances. It is housed in a very compact and thin package, providing flexible designability of information terminal devices.

Smallest class infrared sensor IC in the world, ultra-compact and thin package

Package: 6-pin SON (2.2 x 2.2 x 0.6 mm)

Built-in thermometer

The AK9752 can measure the temperature of IR sensor element.

Low power consumption

The AK9752 achieves low power consumption. (Power supply: Typ.1.8V, Power consumption: Max.100μA @10Hz Output). An interrupt function also helps sustain low power consumption operation with an external microcontroller. It enables long-time operation with a battery driven system.


_Key features:
  • Temperature range:  -35°C to 85℃
  • I2C interface
  • 1.65V to 1.95V
  • Max 100uA (10Hz Output)
  • 6-pin SON package (2.2 x 2.2 x 0.6mm)


  • Home information devices
  • Smart locks
  • IoT cameras
  • Home appliances
  • PC


Fitting products 

_AirPrime®  BC118

The AirPrime® BC118 from Sierra Wirless is a highly flexible, ultra-low power, small form factor Bluetooth Low Energy 4.1 certified module. It comes preloaded with BlueCreation Melody Smart software, and is ideal for developers who want to quickly and cost effectively integrate Bluetooth Low Energy functionality into their products. The BC118 comes as a complete package. It includes the Bluetooth protocol stack, Ability to send and receive data between 2 modules, one module and Android, iOS and Windows mobile devices. It can run standalone or controlled and configured by a Host Processor. It provides a simple very reliable interface to build Smart Bluetooth systems.


_Serial NOR Flash memories

In addition, you will receive NAND Flash memory with SPI interface at Atlantik Elektronik. These products are an extension of the serial NOR Flash products at higher densities. To simplify the life of designers looking to store code on their systems at densities beyond the NOR Flash offering of 512Mb density.

Winbond's W25X and W25Q SpiFlash® Multi-I/O Memories feature the popular Serial Peripheral Interface (SPI), densities from 512K-bit to 512M-bit, small erasable sectors and the industry's highest performance. The W25X family supports Dual-SPI effectively doubling standard SPI clock rates. The W25Q family is a "superset" of the 25X family with Dual-I/O and Quad-I/O SPI for even higher performance. Clock rates up to 104MHz achieve an equivalent of 416MHz (50M-Byte/S transfer rate) when using Quad-SPI. This is more than eight times the performance of ordinary Serial Flash (50MHz) and even surpasses asynchronous Parallel Flash memories while using fewer pins and less space. Faster transfer rates mean controllers can execute code (XIP) directly from the SPI interface or further improve boot time when shadowing code to RAM. Additionally, some SpiFlash devices offer the new Quad Peripheral Interface (QPI) supporting true Quad Commands for improved XIP performance and simpler controller circuitry. Additionally, new ultra-small form factor packages are ideal for space.