RF5345 Datasheet, PDF (17/20 Pages) RF Micro Devices – 2.4GHz TO 2.5GHz, 802.11b/g/n WiFi FRONT END MODULE

RF5345
Case
Mode
C_TX
C_RX
3
WiFi Bypass
LOW*
HIGH
*These controls must be set to a logic low or grounded. Do not leave floating.
C_Shared_RX
LOW
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 5. WiFi Bypass Control Settings and Signal Flow Diagram
To prevent additional losses during Bypass mode, ensure that the off branches of the SP3T switch have the controls C_TX and
C_BT set “low” or grounded. For optimum performance, it is also recommended to terminate the RF ports BT and TX_In with
50 .
BLUETOOTH TX/RX Mode
For Bluetooth transmit and receive operation, the only active component is the SP3T switch. Typical insertion loss within the
operating frequency is only 1.5dB. Figure 6 illustrates the signal flow and control settings.
DS120215
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
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