Datasheet

NEO-M8U - Data Sheet
UBX-15015679 - R06 Electrical specification Page 18 of 27
Product Information
4.2 Operating conditions
☞ All specifications are at an ambient temperature of 25°C. Extreme operating temperatures can
significantly impact specification values. Applications operating near the temperature limits
should be tested to ensure the specification.
Parameter Symbol Min Typical Max Units Condition
Power supply voltage VCC 2.7 3.0 3.6 V
Supply voltage USB VDD_USB 3.0 3.3 3.6 V
Backup battery voltage V_BCKP 1.4 3.6 V
Backup battery current I_BCKP 15 µA V_BCKP = 1.8 V, VCC = 0 V
SW backup current I_SWBCKP 30 µA VCC = 3 V
Input pin voltage range Vin 0 VCC V
Digital IO Pin Low level input voltage Vil 0 0.2*VCC V
Digital IO Pin High level input
voltage
Vih 0.7*VCC VCC V
Digital IO Pin Low level output
voltage
Vol 0.4 V Iol = 4 mA
Digital IO Pin High level output
voltage
Voh VCC–0.4 V Ioh = 4 mA
Pull-up resistor for RESET_N Rpu 11
kΩ
USB_DM, USB_DP VinU Compatible with USB with 27
Ω
series resistance
VCC_RF voltage VCC_RF VCC–0.1 V
VCC_RF output current ICC_RF 50 mA
Receiver Chain Noise Figure
14
NFtot 3 dB
Operating temperature Topr –40 85 °C
Table 10: Operating conditions
☞ Operation beyond the specified operating conditions can affect device reliability.
4.3 Indicative current requirements
Table 11 lists examples of the total system supply current for a possible application.
☞ Values in Table 11 are provided for customer information only as an example of typical power
requirements. Values are characterized on samples, actual power requirements can vary
depending on FW version used, external circuitry, number of SVs tracked, signal strength, type of
start as well as time, duration and conditions of test.
Parameter Symbol Typ
GPS & GLONASS
Typ
GPS / QZSS / SBAS
Max Units Condition
Max. supply current
15
Iccp 67 mA
Average supply current
16, 17
Icc 29 23 mA Estimated at 3 V
Table 11: Indicative power requirements at 3.0 V
☞ For more power requirements information, see the NEO-M8U Hardware Integration Manual Error!
Reference source not found..
14
Only valid for the GPS band
15
Use this figure to determine maximum current capability of power supply. Measurement of this parameter with 1 Hz
bandwidth.
16
Acquisition and tracking use this figure to determine required battery capacity.
17
Simulated GNSS constellation using power levels of -130 dBm. VCC = 3.0 V