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RF5745TR7 Datasheet(PDF) 9 Page - RF Micro Devices

Part # RF5745TR7
Description  2.4GHz TO 2.5GHz, 802.11b/g/n SINGLE-BAND FRONT END MODULE
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Manufacturer  RFMD [RF Micro Devices]
Direct Link  http://www.rfmd.com
Logo RFMD - RF Micro Devices

RF5745TR7 Datasheet(HTML) 9 Page - RF Micro Devices

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RF5745
DS120214
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
RF5745 Biasing Instructions:
• 802.11b/g and ZigBee® Transmit
• Connect the FEM to a signal generator at the input and a spectrum analyzer at the output.
•Bias VCC to 4.0V 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 2.85V (typ.). VREG controls the current drawn by the 802.11b/g and ZigBee® power amplifier and the current
should quickly rise to ~100mA±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 and ZigBee® Receive
• To Receive WiFi set the switch control lines per the truth table below.
• BluetoothTM Receive
• To Receive BluetoothTM set the switch control lines per the truth table below.
Switch Control Logic
*The FEM can simultaneously receive WiFi and BluetoothTM in the WiFi RX and BT RX Mode.
Mode
C_RX
C_TX
C_BT
BluetoothTM
LL
H
WiFi Tx
L
H
L
WiFi Rx
H
L
L
WiFi Rx/BT
H
L
H


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