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TDK boasts world's smallest Bluetooth Smart module

Posted: 01 Oct 2015     Print Version  Bookmark and Share

Keywords:TDK  Bluetooth  module  wearable  DC-DC converter 

TDK Corp. has unleashed what it touts as the world's smallest module for the latest Bluetooth 4.1 low energy (LE) specification. The ultra-compact dimensions of the TDK SESUB-PAN-D14580 module are 3.5 mm x 3.5 mm x 1mm, minimising the footprint by more than 60 per cent compared to modules with discrete components, stated the company.

The module features an integrated DC-DC converter. With a voltage supply of 3V, its current consumption is only 5mA when transmitting, 5.4mA when receiving and 0.8µA in standby mode. Thanks to its miniature size and low current consumption, the Bluetooth module is geared for battery-powered wearable devices, where small size, light weight, and low power consumption are essential requirements.

The SESUB-PAN-D14580 module, which is based on TDK's SESUB (semiconductor embedded in substrate) integration technology, features an embedded DA14580 Bluetooth 4.1 chip from Dialog Semiconductor. All terminals of the discrete chip are available, allowing full use of chip functions. The quartz oscillator, capacitors, and various other peripheral components are mounted on the same substrate, enabling the record miniaturisation. In addition, the modular approach simplifies the hardware design process.


Bluetooth has established itself as the wireless communication standard of choice to connect wearable devices to smartphones, tablets or PCs, for example. The SESUB-PAN-D14580 implements Bluetooth 4.1 LE, the latest version of this standard that is also known as Bluetooth Smart, which made it possible to reduce power consumption to about one fourth of conventional Bluetooth devices.

Main applications of the device include: healthcare, sport and fitness devices such as physical activity monitors, thermometers, blood pressure monitors, blood oxygen monitors, blood sugar monitors, heart rate monitors and more; wearable devices such as smart bracelets, watches, rings, glasses and clothing; home and entertainment devices such as beacon systems, thin card devices, remote controls, sensor tags, toys, lighting systems and more; and computer peripheral devices such as mouses, keyboards, stylus pens and presentation pointers.

Mass production started in July 2015.


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