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PDF MAX-M5Q Data sheet ( Hoja de datos )
| Número de pieza | MAX-M5Q | |
| Descripción | Concurrent GNSS Receiver | |
| Fabricantes | ublox | |
| Logotipo |  |
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MAX-M5Q
Concurrent GNSS Receiver
Data Sheet
Highlights:
• Multi-GNSS engine for concurrent GPS, GLONASS, Galileo and
QZSS
• Extremely small for factor and low power consumption
• Self-Assistance for 3 days
• Superior Sensitivity
• Form-factor compatible with MAX-7 series
www.u-blox.com
1 page  
MAX-M5Q - Data Sheet
1 Functional description
1.1 Overview
MAX-M5Q is a standalone GNSS module from u-blox that supports concurrent GNSS navigation based on the
MT3333 chip. With the exceptional utilization of GPS and GLONASS simultaneously, MAX-M5Q can enhance the
position availability in harsh GNSS satellite visibility conditions or at high latitudes, e.g. in polar regions.
The Max-M5Q is characterized by a small foot-print, low power consumption, and sophisticated interference
suppression, ensuring maximum performance even in GPS-hostile environments. This makes incorporating
MAX-M5Q into customer designs simple and straightforward. MAX-M5Q targets industrial and consumer
applications that require concurrent GPS/GLONASS reception. MAX-M5Q is form factor compatible with MAX
modules, allowing the upgrade of existing designs with minimal effort.
The MAX-M5Q supports a feature called AlwaysLocate™, which is an intelligent controller of the power saving
mode. Depending on the environment and motion conditions, the module can adaptively adjust the navigation
activity and fix rate based on measured velocity in order to achieve a balance in positioning accuracy, fix rate and
power consumption.
The MAX-M5Q supports autonomous A-GPS. Thanks to the EASY™ (Embedded Assist System) ephemeris
extension embedded in the software, this is a self-assisted module, with no resources required from the host. It
allows a reduction of the warm start TTFF by as much as 90%. The EASY™ data is stored on internal flash
memory and allows fast TTFF of typically 3 seconds over 3 days.
The MAX-M5Q also contains an interference suppression, which provides state-of-art narrow band (CW)
interference and jamming elimination up to 12 CW jammers < –80 dBm.
The module also supports a logging feature called LOCUS, which enables automatic logging of position data to
internal flash memory. The logging capacity is typically >16 hrs @ 15 sec storage interval.
MAX-M5Q modules are manufactured in ISO/TS 16949 certified sites.
1.2 Product features
UBX-130024951 - R04
Early Production Information
Functional description
Page 5 of 25
5 Page 
MAX-M5Q - Data Sheet
For more information about power management command concerning AlwaysLocate mode, see the
MAX-M5Q Receiver Description including Protocol Specification [1].
1.12.3 Backup State
Backup State means a low quiescent (typically 10 µA at V_BCKP) power state where receiver operation is
stopped; only the backup supply V_BCKP is powered on while the main supply VCC is switched off by the host
(or autonomously by MAX-M5Q in Periodic mode and AlwaysLocateTM mode). Waking up from Backup State to
Full Power is controlled by the host by switching on the VCC supply.
After waking up, the receiver uses all internal aiding, including GNSS time, Ephemeris, and Last Position,
resulting in the fastest possible TTFF in either hot or warm start modes.
During Backup State, the I/O block is powered off. The suggestion is that the host forces its outputs to a low
state or to a high-Z state during the Backup State to minimize small leakage currents (<10 µA typically) at
receiver’s input signals.
1.13 Jamming Remover
The Jamming Remover is an embedded HW block providing interference suppression that tracks and removes up
to 12 pieces CW (Carrier Wave) type signals up to –80 dBm (total power signal levels). By default the
interference suppression is disabled and usage requires a PMTK command to enable it.
For more information concerning jamming remover configuration command, see the MAX-M5Q Receiver
Description including Protocol Specification [1].
The Jamming Remover can be used for solving narrow band (CW) EMI problems in the customer’s system. For
example, it is effective against narrow band clock harmonics. When enabled, Jammer Remover will increase
current drain by about 1 mA, and impact on GNSS performance is low at modest jamming levels. However, at
high jammer levels of –90 to –80 dBm, the RF signal sampling (ADC) starts to get saturated after which the
GNSS signal levels start to reduce.
The Jamming Remover is not effective against wide band noise (e.g. from a host CPU memory bus), which
cannot be separated from thermal noise floor. A wide band jamming signal increases the effective noise
floor and eventually reduces GNSS signal levels.
1.14 Antenna
1.14.1 Antenna input
The antenna input provides simultaneous reception of all frequencies from 1560 to 1606 MHz. The module
supports only active antennas. The antenna input RF_IN impedance is 50 Ω. The RF input signal path contains a
SAW band-pass filter before the internal LNA, which provides good out-of-band protection against GNSS
blocking caused by possible nearby wireless transmitters.
Antenna input is ESD sensitive. An external TVS diode with low capacitance (<0.5 pF, e.g. Infineon
ESD0P2RF) can be used to improve RF-input ESD capability.
1.14.2 Active GNSS antenna
The customer has to use an external active GNSS antenna. It is suggested the active antenna has a net gain
including cable loss, as specified in Table 3. Specified sensitivity is measured with external low noise (NF < 1 dB,
G > 15 dB) amplifier.
When the module is in Standby/Backup mode, the antenna bias can be switched off externally by using the
ANT_ON signal output to switch off bias supply.
UBX-130024951 - R04
Early Production Information
Functional description
Page 11 of 25
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet MAX-M5Q.PDF ] | |
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