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5.2.1. Antenna Interface & Frequency Bands
The following table shows the pin definition, frequency, and performance of GNSS antenna interface.
Table 36: Pin Definition of GNSS Antenna Interface
Pin Name
ANT_GNSS
Table 37: GNSS Frequency
Type
GPS
GLONASS
BeiDou
Galileo
5.2.2. Reference Design
5.2.2.1. Recommended Circuit for Passive Antenna
GNSS antenna interface supports passive ceramic antennas and other types of passive antennas. A
reference circuit design is given below.
Figure 31: Reference Circuit Design for GNSS Passive Antenna
NOTE
SC690A_Series_Hardware_Design
Pin No.
I/O
134
AI
Frequency
1575.42 ± 1.023
1597.5–1605.8
1561.098 ± 2.046
1573.5–1577.5
R1
ANT_GNSS
C4
0R
NM
Module
Description
GNSS antenna interface
Passive
Antenna
C1
C2
NM
Smart Module Series
Comment
50 Ω impedance
Unit
MHz
78 / 105
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