Sony to Release High-Precision GNSS Receiver LSIs for IoT and Wearable Devices

Sony Electronics - 08/19/2020

Delivering the Industry’s Lowest Power Consumption*1
for Dual-Band Positioning Operation


Tokyo, Japan—Sony Corporation announced today the upcoming release of high-precision Global Navigation Satellite System (GNSS) receiver LSIs for use in IoT and wearable devices. The new receiver LSIs boast the industry’s lowest power consumption*1 for dual-band positioning operation—only 9 mW.*2

Sony Electronics Inc.

GNSS receiver LSI left: CXD5610GF, right: CXD5610GG

  • *1Among GNSS receiver LSIs. According to Sony research. (As of August 19, 2020, the date of this release.)
  • *2For the CXD5610GF GNSS receiver LSI.

Model names

Sample shipment date

Sample price (excluding tax)

CXD5610GF and CXD5610GG

GNSS receiver LSIs

September 2020

1,000 yen

Increasing use of IoT and wearable devices that utilize location information has resulted in growing demand for GNSS receiver LSIs. Precise positioning and reliable communications must be ensured to maintain proper operation of IoT and wearable devices, which are being used even in difficult communication environments and unstable conditions, such as multipath propagation*3 situations caused by reflection off the ground or nearby buildings or the effects of the swinging of the arms when attached to a person’s wrist. Additionally, device size constraints necessitate a compact battery, whereas satellite signal reception and positioning when using GNSS functionality typically consumes a lot of power, resulting in poor battery life.

The new LSIs support not only the conventional L1 band reception, but also L5 band reception, which is currently being expanded across GNSS constellations, thereby making them capable of dual-band positioning. Sony’s original algorithms enable stable, high-precision positioning even under the difficult conditions unique to wearable devices. Also, the use of Sony’s original high-frequency analog circuit technology and digital processing technology delivers the industry’s lowest power consumption during continuous positioning for dual-band reception operation, at only 9 mW.

The new LSIs will drive greater opportunities to develop new products and services such as smartwatches and other wearable devices that cannot use external power supplies, as well as IoT devices used for applications such as trackers. They also show promise in a wide variety of applications which require precise positioning and stable communications, such as automotive services.

*3: Signals traveling along multiple, differing pathways due to reflection and other factors, resulting in signal disturbance on the receiving end.

Main Features

■ High-precision, stable positioning via dual-band operation with the industry’s lowest power consumption

Compared with the L1 band, the new signal method used in the L5 band employs signal units that are 10 times narrower to measure the range between the GNSS satellite and receiver, improving positioning precision and amplifying the transmission power from the satellite, resulting in high-precision, high-sensitivity positioning.

Quick, accurate GNSS signal reception via Sony’s original algorithms enables positioning that is more stable than conventional products*4 even in changing reception environments, such as obstructing from buildings when on the move and acceleration of wearables due to swinging of the arms. This also leads to quick positioning time even from cold starts,*5 which require more time. Additionally, Sony’s original digital signal processing technology enables countermeasures against the performance degradation caused by radio interference from aircraft communications as well as spoofing attacks and other issues, thereby improving resistance to interference.

Low power consumption and high sensitivity are delivered by Sony’s original analog circuit technology, which enables low-voltage operation, as well as digital circuits and software algorithms that enable software processing via low clock frequencies. This innovative design keeps power consumption to only 9 mW, the lowest in the industry, when simultaneously receiving signals in both the L1 and L5 bands.

4. For Sony’s CXD5605GF GNSS receiver LSI

5. Positioning without the current time, current location, or satellite information.

Sony Electronics Inc.Position error improvement due to new signal method in L5 band

 

Comparison of compatible satellite systems among the new products and conventional products

Compatible Satellite Systems

Positioning Signal

New Products

Conventional Products

GPS

 

L1C/A

L5

×

Galileo

 

E1

E5a

×

BeiDou

 

 

B1I

B1C

×

B2a

×

GLONASS

L1OF

QZSS

 

 

L1C/A

L1S

L5

×

SBAS

L1

NavIC

L5

×

 

■ Built-in memory

The new LSI’s feature built-in non-volatile memory for storing firmware, etc. This design makes it possible to update the firmware without adding externally mounted memory and contributes to a more compact design for IoT and wearable devices by saving space. It also makes it possible to complete data-processing in the products, resulting in low power consumption and improved access speed.

Key Specifications

Model Name

CXD5610GF

CXD5610GG

Compatible Satellite Systems

GPS

L1C/A, L5

Galileo

E1, E5a

BeiDou

B1I, B1C, B2a

GLONASS

L1OF

QZSS

L1C/A, L1S, L5

SBAS

L1

NavIC

L5

Hot Start Sensitivity

-163dBm

Tracking Sensitivity

-167dBm

Hot Start Initial Positioning Calculation Time

Less than 1 second (at -130dBm)

Power Consumption

1.5 GHz/1.2 GHz simultaneous reception

9 mW

11 mW

1.5 GHz reception

6 mW

7 mW

1.2 GHz reception

7 mW

8 mW

IO Voltage

1.8 V

1.8 V, 3.3 V

User Interface

UART, I2C, SPI

Package

XFBGA-54Pin

LFBGA-72Pin

External Dimensions (LWH)

3.2×3.7×0.5 mm

7.0×8.0×1.4 mm

         

 

 

Media inquiries: Corporate Communications, Sony Corporation

Email: Sony.Pressroom@sony.co.jp.

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