8
RF reference circuit
Figure 5 Typical application circuit
NOTE：
1
、
RF trace need to keep 50 ohm impedance.
2
、
USB differential pair need to keep 90ohm impedance.
3
、
C1 10uF closed to Module pin 11
4
、
Reserved 0R between Module pin 16 pin 17 and Host
5
、
LED active low.
Recommended alternatives or upgrades
If you just use WiFi (only connect the pin 1/2/11/12/13/14), you can replace it with the following solution:
BL-R7601MU2 / BL-R8188EU1 / BL-R8801MU2
Details please refer to :
www.b-link.net.cn
