RF5345 Datasheet, PDF (20/20 Pages) RF Micro Devices – 2.4GHz TO 2.5GHz, 802.11b/g/n WiFi FRONT END MODULE

RF5345
Case
Mode
C_TX
C_RX
7
SHARED BYPASS
LOW*
WiFi/BT Receive
HIGH
*These controls must be set to a logic low or grounded. Do not leave floating.
C_Shared_RX
HIGH
C_BT
LOW*
LNA_Bias
LOW
16
15
14
LNA_Bias 1
RX_OUT 2
TX_IN ₃
13
12 _{C_BT}
ANT
11
10 GND
Vreg ⁴
5
6
7
9 VCC_2
8
Figure 8. Shared Bypass Mode Control Settings and Signal Flow
PCB Layout
The integrated harmonic filtering and matching of the RF5345 facilitates deployment on the customer’s board by offering 50
interface at all RF ports. For best results, the board layout from the evaluation board should be copied as closely as possible in
particular the ground configuration underneath the FEM and around the RF traces and decoupling capacitors. There is an indi-
cator pin labeled P1 ID that should be left as a no-connect on the PCB. This pin is directly connected to the ground pad of the
IC (refer to the package drawing on page 7). For best performance it is recommended that voltage and RF lines do not cross
under this pin. Gerber files of RFMD evaluation board and PCB landing pads recommendations can be provided upon request.
20 of 20
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
DS120215