Status:
Key Features
EMAIL US: info@quectel.com VISIT US: www.quectel.com
Version:
Quectel LG77L
Extremely Compact
Multi-Constellation GNSS Module
with Ultra-Low Power Consumption
Quectel LG77L GNSS module supports concurrent reception of GPS, GLONASS (or BeiDou), Galileo, and QZSS. It can
acquire and track any mix of GPS, GLONASS (or BeiDou), Galileo and SBAS signals.
Compared with single GPS systems, enabling multiple GNSS systems increases the number of visible satellites,
reduces the time to a first fix and improves the positioning accuracy, especially when driving through dense urban
canyons.
By combining EASY™ (Embedded Assist System), an advanced AGNSS feature, with GLP (GNSS Low Power), a low-
power mode, the LG77L module achieves high performance, low power consumption and fully meets the industrial
standards. The EASY™ technology allows the module to calculate and predict orbits automatically by using the
ephemeris data (of up to 3 days duration) which are stored in the internal RAM. As a result, the LG77L can acquire a
fix position quickly, even at lower signal levels with low power consumption. With the GLP technology, on the other
hand, the LG77L can adaptively adjust the on/off time based on the environmental and motion conditions to achieve
a balance between the positioning accuracy and power consumption.
Its enhanced performance makes the LG77L ideal for the industrial PDA, consumer and industry applications.
Extremely low-power consumption makes it a great solution for power-sensitive applications, such as portables.
Extremely compact size: 7.0 mm × 7.0 mm × 2.0 mm
Multi-GNSS engine for GPS, GLONASS (or BeiDou), Galileo
(in the LG77L (C) version) and QZSS
Supports anti-jamming technology and a multi-tone active
interference canceller
Multiple low-power modes ensure ultra-low power
consumption
Supports UART and I2C Interfaces
Maximum update rate: up to 10 Hz
Supports SDK commands developed by Quectel
Supports AGNSS
1.3
Released
EASY™
Technology
Ultra Low Power
Consumption
Extremely
Compact Size
Super Tracking
Sensitivity:
-158 dBm
Extended Temperature
Range: -40 to +85 °C
Anti-Jamming
RoHS Compliant Multi-GNSS System
7.0 mm
7.0 mm
2.0 mm
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HQ address: Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai 200233, China
Tel: +86 21 51086236 Email: info@quectel.com
Quectel LG77L
GNSS
Module
LG
77L (A)
LG
77L (B)
LG
77L (C)
Region
Global
Global
Global
Dimensions
7.0 mm
× 7.0 mm × 2.0 mm
7.0 mm
× 7.0 mm × 2.0 mm
7.0 mm
× 7.0 mm × 2.0 mm
Weight
Approx. 0.2 g
Approx. 0.2 g
Approx. 0.2 g
Temperature Range
Operating
Temperature
-
40 °C to +85 °C
-
40 °C to +85 °C
-
40 °C to +85 °C
Storage
Temperature
-
40 °C to +90 °C
-
40 °C to +90 °C
-
40 °C to +90 °C
GNSS Features
Supported Bands
GPS L1 C/A: 1575.42 MHz
GLONASS L1: 1602.5625 MHz
BeiDou B1
I: 1561.098 MHz
GPS L1 C/A: 1575.42 MHz
GLONASS L1: 1602.5625 MHz
BeiDou B1
I: 1561.098 MHz
GPS L1 C/A: 1575.42 MHz
GLONASS L1: 1602.5625 MHz
BeiDou B1
I: 1561.098 MHz
Galileo E1: 1575.42M
Hz
Default GNSS
Constellation
①
GPS + GLONASS, or GPS +
BeiDou
GPS + GLONASS, or GPS +
BeiDou
GPS + GLONASS, or GPS +
BeiDou
Number of
Concurrent GNSS
2
2
3
SBAS
WAAS, EGNOS, MSAS, and GAGAN
WAAS, EGNOS, MSAS, and GAGAN
WAAS, EGNOS, MSAS, and GAGAN
Horizontal Position
Accuracy
②
Autonomous: < 2.5 m CEP
Autonomous: < 2.5 m CEP
Autonomous: < 2.5 m CEP
Velocity Accuracy
②
Without Aid: < 0.1 m/s
Without Aid: < 0.1 m/s
Without Aid: < 0.1 m/s
Acceleration
Accuracy
②
Without Aid: < 0.1 m/s²
Without Aid: < 0.1 m/s²
Without Aid: < 0.1 m/s²
Timing Accuracy
②
1PPS < 50 ns
1PPS < 50 ns
1PPS < 50 ns
TTFF @
-130 dBm
with EASY
™
Cold Start: < 14 s
Warm Start: < 4 s
Hot Start: < 2 s
Cold Start: < 14 s
Warm Start: < 4 s
Hot Start: < 2 s
Cold Start: < 17 s
Warm Start: < 5 s
Hot Start: < 2 s
TTFF @
-130 dBm
without EASY
™
②
Cold Start: < 26 s
Warm Start: < 24 s
Hot Start: < 2 s
Cold Start: < 26 s
Warm Start: < 24 s
Hot Start: < 2 s
Cold Start: < 25 s
Warm Start: < 23 s
Hot Start: < 2 s
Sensitivity
Acquisition:
-147 dBm
Tracking:
-158 dBm
Reacquisition:
-156 dBm
Acquisition:
-147 dBm
Tracking:
-158 dBm
Reacquisition:
-156 dBm
Acquisition:
-146 dBm
Tracking:
-163 dBm
Reacquisition:
-156 dBm
Dynamic
Performance
②
Maximum Altitude: Max. 10000 m
Maximum Velocity: Max. 515 m/s
Maximum Acceleration: 4g
Maximum Altitude: Max. 10000 m
Maximum Velocity: Max. 515 m/s
Maximum Acceleration: 4g
Maximum Altitude: Max. 10000 m
Maximum Velocity: Max. 515 m/s
Maximum Acceleration: 4g
Certifications
Regulatory
CE
CE
CE
Others
RoHS
RoHS
RoHS
Interfaces
I
2C Interface
③
Up to 400 kbps
Up to 400 kbps
Up to 400 kbps
UART Interface
Adjustable: 9600 bps to 921600 bps
Default: 9600 bps
Update Rate: 1 Hz (Default), up to 10 Hz
Adjustable: 9600 bps to 921600 bps
Default: 9600 bps
Update Rate: 1 Hz (Default), up to 10 Hz
Adjustable: 9600 bps to 921600 bps
Default: 9600 bps
Update Rate: 1 Hz (Default), up to 10 Hz
Protocols
NMEA 0183, PMTK,
PQ
NMEA 0183, PMTK,
PQ
NMEA 0183, PMTK,
PQ
External Antenna
Interface
Antenna Type
Active or Passive
Active or Passive
Active or Passive
Antenna Power
Supply
External
External
External
Active Antenna
Protection
Short
-Circuit Protection and Open-
Circuit Detection
Short
-Circuit Protection and Open-
Circuit Detection
Short
-Circuit Protection and Open-
Circuit Detection
Notes:
1.
①
: Depending on the firmware version.
2.
②
: Room temperature, all satellites at -130 dBm.
3.
③
: Only certain firmware versions support the I2C interface.