WI.M868X Radiotronix, WI.M868X Datasheet - Page 8

• Manufacturer Part Number: WI.M868X
• Description: RF Modules & Development Tools Wi.M868X MODULE
• Manufacturer: Radiotronix

Specifications of WI.M868X

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: WIM868X

WI.M868X-R/ WI.M868T-R/ WI.M868X-DP-R DATASHEET
2. Theory of Operation
2.1. General
The Wi.M868X-R
RFIC. It encapsulates the remaining circuitry required to complete an RF module.
Any 50 ohm antenna can be used with the Wi.M868X-R
R
Wi.M868T-R
switch.
Figure 1: Wi.M868X-R
On the Wi.M868X-R
RF switch directly. The module can be ordered with or without a SAW filter. If the SAW filter is populated, it is
critical that the antenna be AC coupled if it has a DC path to ground (which is true for most PCB antennas).
On the Wi.M868T-R
If populated, the RF switch connects the antenna port to either the transmit or receive RF chain. It is controlled
by TRSW and RXSW. For the Wi.M868X-R
the Wi.M868X-DP-R
following table shows how TRSW and RXSW affect the operation of the module.
AN T
TM
S W IT C H 1
/ Wi.M868X-DP-R
FILTE R
S AW
TM
is only populated with the transmitter components; it does not have the SAW filter or the RF
LN A
TM
P A
/ Wi.M868T-R
TM
TM
TM
TM
/ Wi.M868X-DP-R
, there is a separate pin (SWITCH) that couples to the TRSW pin of the XE1203F. The
the antenna pin connects directly to the output of the power amplifier.
module is populated with all of the transceiver components shown in figure 1. The
TM
VC O
/Wi.M868T-R
FILTER
LO O P
A M P
A M P
A M P
Q
I
I
R S S I
TM
/ Wi.M868X-DP-R
I AM P O U T
XT AL
TM
1
TM
A M P
A M P
the antenna pin on the module goes either to the SAW filter or to the
Q
I
TM
/Wi.M868X-DP-R
C LK O U T
, TRSW is also connected to the TRSW input of the XE1203F. For
LIM
LIM
TM
7
TM
module is based on the XEMICS XE1203F transceiver
D E M OD U LATO R
/ Wi.M868T-R
TM
PA TTE R N
D A TA
C LK
Block Diagram
IN TE R FA C E
TM
D IG ITA L
D ATA
/ Wi.M868X-DP-R
P ATT ER N
D C LK
D A TA
SW ITC H2
D IN
S C K
SO
E N
S I
Chapter
TM
2
. The Wi.M868X-