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RF5345 数据表(PDF) 6 Page - RF Micro Devices

部件名 RF5345
功能描述  2.4GHz TO 2.5GHz, 802.11b/g/n WiFi FRONT END MODULE
PDF  20 Pages
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制造商  RFMD [RF Micro Devices]
网页  http://www.rfmd.com
标志 RFMD - RF Micro Devices

RF5345 数据表(HTML) 6 Page - RF Micro Devices

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RF5345
DS120215
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
RF5345 Biasing Instructions:
• 802.11b/g/n Transmit
• Connect the FEM to a signal generator at the input and a spectrum analyzer at the output.
•Bias VCC to 3.3V first with VREG=0.0V
• Refer to switch operational truth table to set the control lines at the proper levels for WiFi TX.
• Turn on
VREG to 2.8V (typ.). VREG controls the current drawn by the 802.11b/g/n power amplifier and the current should
quickly rise to ~110mA±20mA for a typical part but it varies based on the output power desired. Be extremely careful not to
exceed 3.4V on the
VREG pin or the part may exceed device current limits.
• 802.11 b/g/n Receive
• To Receive WiFi set the switch control lines per the truth table below.
• Bluetooth® Receive
• To Receive Bluetooth® set the switch control lines per the truth table below.
Switch Control Logic
*Note: It is recommended that shared mode C_BTB (pin-16) is set to High and the BT radio off for best performance.
**Note: Setting LNA_Bias to “low” enables the LNA bypass switch. Therefore, if LNA_Bias is set to “high” during Transmit
mode, TX to RX isolation improves. This is an optional setting if additional TX to RX isolation is required for the system.
FEM Pin # -->
14
15
16
12
1
CASE
MODE
C TX
C RX C SHARED RX C BT
LNA
Bias
BT
RADIO
WiFiRX
RADIO
WiFi TX
RADIO
1
WiFi_TX
High
Low
X
Low
**High or
Low
OFF
OFF
ON
2
WiFi_RX
Low
High
*High or Low
Low
High
OFF
ON
OFF
3
WiFi_RX (bypassed)
Low
High
*High or Low
Low
Low
OFF
ON
OFF
4
BT_TX
Low
Low
Low
High
Low
ON
OFF
OFF
5
BT_RX
Low
Low
Low
High
Low
ON
OFF
OFF
6
WiFi_RX + BT_RX (Shared)
Low
High
High
Low
High
ON
ON
OFF
7
WiFi_RX + BT_RX (Shared
Bypassed)
Low
High
High
Low
Low
ON
ON
OFF



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