UM680A

Automotive Grade Multi-GNSS Dual-frequency High Precision RTK Positioning Module
UM680A is a high precision GNSS dual-frequency navigation car gps module developed by Unicore for the intelligent driving market. Based on the proprietary multi-system dual-frequency high-performance SoC-UC6580A, the module supports multi-system dual-frequency joint positioning with centimeter-level accuracy, and it operates at temperatures up to 105 ®C.

Ordering Information

Supply at multiples of 250 pieces

Product Characteristics
Supports concurrent operation of vechicle gps, BDS, GLONASS and Galileo

Dual-frequency single point positioning, providing higher accuracy and reliability

compared to single-frequency solution

Supports A-GNSS to reduce the TTFF

GNSS chip qualified according to AEC-Q100 and production process conforms to IATF16949

Anti-jamming design to ensure the module working stably in complex electromagnetic environment

Centimeter-level positioning accuracy & raw data output

Technical Specifications

Performance Specifications

Channel 96 channels, based on UFirebirdII
Frequency GPS L1C/A, L5
BDS B1I, B1C*, B2a
GLONASS G1*
Galileo E1, E5a
NavIC L5*
QZSS L1, L5
SBAS L1C/A
Modes Single-system standalone positioning
Multi-system joint positioning
Time to First Fix (TTFF) Cold Start: ≤ 26 s
Hot Start: ≤ 2 s
Re-acquisition : ≤ 2 s
DGNSS (RMS) Horizontal: 1.5 m (open sky)
Vertical: 2.5 m (open sky)
RTK (RMS) Horizontal: 1 cm + 1 ppm (open sky)
Vertical: 1 cm + 1 ppm (open sky)
Velocity Accuracy(RMS)1 0.05 m/s
1PPS 20 ns
Sensitivity (GNSS) BDS+GPS+GLONASS+Galile
Tracking: -162 dBm
Cold start: -147 dBm
Hot Start：-157 dBm
 Reacquisition: -158 dBm
Data Update Rate 1 Hz / 5 Hz / 10 Hz
Correction RTCM V3.X
Data Format NMEA 0183, Unicore


Physical Specifications
Dimensions 22.0 x 17.0 x 2.6 mm
Package 54 pin, LGA
Operating Temperature -40®C ~ +85 ®C / 105 ®C
Storage Temperature -40®C ~ +85 ®C /105 ®C

Electrical Specifications
Voltage 2.7 V ~ 3.6 V DC
LNA Feed Power 2.7 V to 3.3 V, <100 mA
Power Consumption 270 mW

Interfaces
2 × UART(LVTTL)
1 × I2C*
1 × SPI*
1 × 1PPS(LVTTL)

Functional Characteristics
Passive Antenna, Active Antenna, AGNSS *
NOTE: * Supported by specific firmware
             1 Open sky, continuous tracking

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