Sony Semiconductor Solutions Corporation

GPS/GNSS Receiver

CXD5605
Sony Semiconductor Solutions GPS/GNSS receiver/processor chips use high-frequency analog circuits and digital signal processing circuits with proprietary designs to deliver accurate positioning with the lowest power consumption level in the industry. This low power consumption performance helps to extend the operating times of the IoT and wearable products that use GPS/GNSS.
GPS/GNSS Receiver
Features
- Low power consumption
Newly developed high-frequency analog circuits such as dedicated low power consumption A/D converter, low noise amplifier, and phase synchronization circuits, and optimal power control and low power consumption circuits achieve operation with the lowest power consumption level in the industry. This enables GPS/GNSS positioning even by products that operate using solar cells.

- Positioning performance
GPS/GNSS receiver design has faced many challenges since PND (Personal Navigation Device). It started with the need to provide an accurate position in the urban area since the main application was a handheld device fixed on the dashboard of a vehicle. Once feature phones and smartphones started to penetrate the market, E-911 and LBS (Location-based services) began to emerge. E-911 demanded TTFF and sensitivity, while LBS applications demanded power consumption and positioning accuracy. The two main challenges were multipath and weak signal acquisition and tracking.


The rise of wearable devices and the need for an embedded GNSS chip add a new set of challenges. The wearable device is more prone to ground reflections, multipath reflection from short distances, disruptive dynamics due to arm swinging; and deep attenuation due to limited visibility and device orientation on the armrest.

The received signal strength for the IoT and wearable products is quite weak compared to conventional products that use GPS for other applications (e.g., car navigation systems). A primary reason might be due to the performance of the low-cost antenna and operating environment. In addition, the received signal condition might be degraded further for wearable devices due to the influence of the user's arm movements among other use case factors.

Sony Semiconductor Solutions GPS/GNSS receiver/processor chips use a proprietary positioning algorithm to enable good positioning performance even under these harsh conditions.

- Space-saving (small area)

Use of a compact package realizes a positioning system with an area of 70 to 100 mm2 or less, including peripheral circuits.

Applications
GPS watches, cameras, wearable products, monitoring, and healthcare products


*Sony Authorized Distributor
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