RF5325SR datasheet(9/12 Pages) RFMD

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RF5325

DS110618

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.

RF5325 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 2.85V (typ.). VREG controls the current drawn by the 802.11b/g/n 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/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

*The FEM can simultaneously receive WiFi and Bluetooth® in the WiFi RX and BT RX Mode.

C_RX

C_TX

C_BT

Mode

Bluetooth®

WiFi TX

WiFi RX

WiFi RX and BT RX mode

RF5325SR Datasheet(PDF) 9 Page - RF Micro Devices