Rated condition
environment condition
Frequency range
DC to 6GHZ
–40°C to +85°C
Characteristic
impedance
50 Ω –40°C to +85°C
NOTE:
The module provides three channel RF antenna interfaces: main antenna, the diversity
antenna and the GPS antenna (optional). The connection with the antenna must be the line of
50 ohm characteristic impedance.
In practical use, according to the user's circuit board line, the antenna factory can optimize
the matching device parameter value, the motherboard R1/R2/R3/R4 default is stickered 0
Ohm, C1/C2/C3/C4 default is blank stickers, in order to prevent damage to the internal
module of the electrostatic, it is recommended to choose a two-way TVS at the antenna
connection D1/D2.
3.10 Analog audio interface
The module provides a set of analog voice interfaces, which consist of one differential input
signal (MIC+/MIC-), one way differential output signal SPK+ (REC+) /SPK- (REC-).
