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LSI

Precise location with ultra low power consumption
Sony's proprietary GNSS chip design delivers accurate positioning with the lowest*¹ power consumption level in the industry.

Latest generation of GNSS technology with L5 compatibility

Sony's line-up of GNSS product excels in industry leading power consumption and outstanding accuracy. Along with the ability to perform in harsh conditions thanks to Non-Line of Sight operation and a footprint less that 10 mm2, the GNSS modules are ideal for use cases on the move for people, pets, drones, assets and vehicles.

*1 In accordance with Sony research testing the CXD5610GF GNSS receiver LSI (as of August 19, 2020).

How did we achieve this?

Legacy techniques are insufficient

For mass deployment and user acceptance, some position monitoring devices require update rates of 1Hz or greater along with simple installation by the customer including battery life of several years. Tracking goods shipments at the level of individual assets requires small, robust, very low-cost trackers with long battery life.

Duty-cycle techniques, where the position is reported intermittently go some way to reducing power consumption, but alone such techniques are insufficient to meet all the use-cases defined above.

Silicon-on-Insulator process

To solve this problem and expand the applications of GNSS, Sony has developed GNSS devices that utilize epoch-making silicon design technologies such as FDSOI process and ultra-low power consumption RF circuit design. By using Sony's GNSS device, high-precision continuous positioning can be performed with low power consumption.
Each use-case requires specific algorithms to optimize performance for example; sports wearables benefit from an algorithm to compensate for arm swinging during running and vehicle tracking applications benefit from untethered dead-reckoning algorithms when the GNSS signal is temporarily lost e.g. tunnels or compromised e.g. urban canyons. A large range of algorithms allows our customers to tailor their solutions to the use-case.

Products

  • CXD5605AGF

  • CXD5610GF

Download CXD5610GF Leaflet
Specifications CXD5605AGF CXD5610GF
Power consumption @ continuous tracking 6 mW (L1) 6 mW (L1) / 9 mW (L1+L5)
Support Constellations GPS/Galileo/Galileo/GLONASS/QZSS/SBAS GPS/Galileo/Galileo/GLONASS/QZSS/SBAS/NavIC
Sensitivity Cold Start: -147 dBm / Hot Start: -160 dBm / Tracking: -161 dBm Cold Start: -149 dBm / Hot Start: -163 dBm / Tracking: -167 dBm
TTFF Cold Start: 35 s / Hot Start: 2 s Cold Start: 24 s / Hot Start: 1 s
Host Interface IO Voltage 1.8 V 1.2 V / 1.8 V
Assisted GNSS Yes Yes
Geofence Yes Yes
Package 49-pin UFBGA 54-pin XFBGA
Op. Temp. -40℃ to 85℃ -40℃ to 105℃

Use Case

Wearables

Small, lightweight wearables that require accurate and continuous positioning with long battery life to maximize time between recharging.

A sports watch needs to be light, small, have long battery life and provide highly accurate tracking for a wide variety of sports. Sony uses advanced silicon design techniques to achieve the smallest and lowest power GNSS Rx solution to facilitate a wearable device developer to meet these requirements.

To support a wide variety of real-world scenarios Sony’s GNSS device has algorithms to cope with such things as arm swinging when running, entering areas of no GNSS signal for a short time in urban environments and coping with a swimmer who’s arm is only temporarily out of the water.

Vehicle Trackers

Vehicle and driver behavior trackers that are low-cost and easy for the user to fit whilst providing accurate positioning, fast start-up, long battery life and can deal with temporary loss of GNSS signal.

Traditionally, vehicle trackers and devices that report driver behavior have required connection to the power supply of the vehicle to ensure stable operation given the power consumption of the GNSS device. This requires a professional installation which is costly and inconvenient for the user and limits the available market for the insurer.
To widen the market for vehicle and driver tracking, there is a trend towards long-life, battery-driven tracking devices, with Sony’s GNSS inside, that the user simply fixes to the windscreen.

These devices require high-accuracy and a lifetime of several years. The GNSS device needs to support 1Hz position updates, while the vehicle is being driven and the ability to be powered-down intelligently when the journey ends, storing the relevant information to allow a quick restart.
In addition, the GNSS must start up very quickly using assisted-GNSS techniques such as autonomous calculation of the ephemeris or using stored ephemeris data downloaded from the cloud.
Sony provides an extensive range of examples that allow the device developer to exploit the features of the GNSS devices easily and effectively, with much of the processing being off-loaded to the GNSS device itself to simplify the software running on the host CPU.

Special variants of the standard GNSS devices allow for the connection of an inertial management unit (IMU) to provide a dead-reckoning function alongside the GNSS positioning. The allows accurate position to be maintained for several minutes, in tunnels or underground car parks when the GNSS signal is temporarily lost. This features can also be used for stolen vehicle trackers where the thieves may attempt to jam the GNSS signal.

Animal Trackers

Pet, livestock and wild animal trackers that must be lightweight, small and robust whilst providing accurate positioning and long batter.

Pets:
Small size and low weight are critical factors to ensure the pet is not troubled by the device that is normally worn on the collar. Sony’s very low power consumption ensures the battery size and weight can be kept to a minimum while maintaining several weeks between recharging.
Typically, a pet will spend most of their time in and around the home, but a frequent, positional update rate is required to ensure the owner is alerted immediately the pet goes outside of a boundary and then the pet’s position is reported in real-time. Sony’s GNSS devices provide functions to allow an intelligent algorithm to be written on the host CPU e.g. wake, check, sleep or wake, check, alert using minimal power.

Livestock: 
The tracking of livestock is usually achieved using ear tags or devices attached to a collar. The devices must be robust, provide accurate positioning in difficult signal conditions and have a long battery life. Sony’s GNSS provides high sensitivity combined with very low power consumption to facilitate small, tough devices, with a small integrated antenna, that can track the animals accurately over a period of many months, while they roam, without requiring maintenance.

Asset Trackers

A wide variety of asset tracking use cases require a GNSS device with a wide range of operating modes to give the flexibility required to design a solution that meets all the requirements.

There are a wide variety of asset tracking use-cases, e.g. some assets will remain still in warehouses for weeks or months before moving, whilst others will be constantly mobile. Sony offers a wide range of functions as part of the GNSS receiver and experienced support engineers around the globe to work with asset tracker vendors to optimize their solutions.

Common requirements in asset tracking are the need for small size and very low-cost. The low power consumption of Sony’s GNSS allows for very small batteries and the tiny package size means the overall size of the tracker is very small.

Timing

The ability to know the exact time or to synchronize assets to a common time requires a resilient GNSS receiver that tracks multiple satellite constellations and delivers and accurate timing reference output.

Timing applications require accuracy and reliability. Sony’s GNSS devices provide the time as usual in the relevant NMEA sentences plus a highly accurate 1PPS (one pulse per second) output that can be used to synchronize a clock.

Additionally, Sony’s CXD5610 can continue tracking and outputting an accurate 1PPS signal even if just one satellite is in view. Also, in poor signal conditions, the acquisition of just a single satellite and output of 1PPS is supported.

Customers & Partners

HERE and Sony Semiconductor Solutions bring precise positioning to devices

HERE Technologies partnered with Sony Semiconductor Solutions to integrate HERE HD GNSS Positioning into Sony Semiconductor Solutions’ dual-band LSI chipsets.
These sets can locate devices with sub-meter level precision while maintaining low power consumption. HERE HD Positioning is a cloud streaming services that improves accuracy 3-4 times over regular GNSS, available globally for mass-market devices and requires no additional hardware.

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