Specifications

SHENZHENSHI XINZHONGXIN TECHNOLOGY CO., LTD.
ADDRESS:Block 3,Dong Huan Industrial Park,Sha Jing Town,Bao’an District,Shenzhen City,Guangdong, China
TEL:[phone] /82 FAX: [phone] WEB：WWW.C-CHIP.COM.CN
F-6988
九、Design notes：
In order to b etter SN R, please pay attention to th e h ard ware d esign of PA , DC
booste r, D C /DC ci rcu i t and th e module p o wer circ u i t to avoi d i nflue n c i n g modul e .
十、Notes：
A．The s ign al stren gth i s d epend in g on t h e env ironment of Bl u etoot h applicat ion,
su ch as wo od and m eta l wi l l block t he transmi s s ion sign al to get t he shorter
transmiss i on d ista nce.
B． Be cause of metal wi l l b l o ck the si g n a l transmis s ion, it is re commen d n ot to
usin g t h e met al ho using.
C．PCB layo u t gu i d eline: n o any co pper existed in th e antenn a area of the m od ule
is th e PCB anten na , th e metal wi ll wea ken the fu n ct ion of th e a nte nn a w h e n t h e
anten na mo d u l e to th e mo dule boa rd, fol lowin g pro h i b i ted paving and walk the
lin e.
D．If the module antenna next to the battery、 metal, liquid crystal screen, loudspeaker, at least keep
them away from antenna distance 15mm
E．When layout the power supply line recommended star line, and to ensure that the Bluetooth
module Power supply lines is better , and BT should be with the amplifier, power amplifier, MCU,
separately, and the underside of the BT has no other interference.
F．suggests the module antenna part floating on the floor, do not go around the antenna control line,
power line, audio line, MIC interference lines;
G．If the module antenna near the row seats, Because of metal will block the signal transmission, it is
recommended to use professional high-gain antenna