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NFC, barometric sensors prevail in mobile devices

Posted: 26 May 2014  Print Version  Bookmark and Share

Keywords:teardown  sensor  NFC 

Teardown.com's Joel Martin gives an insight into mobile devices' connectivity and sensors, and the leading vendors that have garnered the most design wins.

As the followup to my blog on essential smartphone sensors, today I'll talk about what Near Field Communications (NFC) hardware and barometric and humidity sensors can be found in today's smart devices.

Since July 2012, Teardown.com has published 87 Deep Dive Teardown analyses in the mobile devices channel, which covers phones, tablets, and laptops. These devices represent a broad sample of manufacturers, price tiers, and markets.

Of this sampling of devices, the number of units and percentage of samples in which these functions were observed can be seen in Table 1.

Feature prevalence

Table 1: Feature prevalence. Source: Teardown.com

NFC hardware

The current players in NFC are NXP Semiconductor, Broadcom, Inside Secure, and STMicroelectronics. NXP's NFC radio chipsets are most often identified in our teardown analysis, with the PN544 and PN65 integrated circuits appearing 13 times each. The NXP parts have been observed since the third quarter of 2012. The PN65 was last seen in a device that shipped in June 2013. The PN544 was observed in a device launched in February 2014.

Broadcom's ICs showed up in nearly a third of our teardowns, with its BCM20793 and BCM20794 parts appearing six times each. Both Broadcom parts have been seen in recent teardowns. The number of occurrences and their share can be seen in Table 2.

NFC hardware

Table 2: NFC hardware. Source: Teardown.com

Barometric sensors

Barometric sensors are only starting to gain traction in mobile devices. They first appeared in the Samsung Galaxy S III (GT-I9300), which launched in mid-2012. It carried the STMicroelectronics LPS331AP sensor, which appeared once more in the Nokia Lumia 1020.

Bosch sensortec

Teardown.com detected nine design wins for the Bosch Sensortec BMP180 barometric sensor (pictured). Source: Bosch

The Bosch Sensortec BMP180 has the most occurrences, with nine design wins. Its apparent successor, the BMP280, was observed twice. The BMP180 has been seen throughout the data sample period, while the BMP280 showed up in November 2013. It is interesting to note that the STMicroelectronics IC costs about twice as much as the Bosch Sensortec parts based on our costing models. Table 3 shows their occurrence information.

Barometric sensors

Table 3: Barometric sensors. Source: Teardown.com

Humidity sensors

Humidity sensors were introduced to the mobile device space by the Samsung Galaxy S4 (GT-I9505) in April 2013. Only one other device with this function has been observed so far in our Deep Dives, that being the Samsung Galaxy Note 3 (SM-N900A). Both units use the Sensirion SHTC 1.

- Joel Martin
  SVP & GM, Teardown.com





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