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RFFM4204SQ Datasheet(PDF) 9 Page - RF Micro Devices |
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RFFM4204SQ Datasheet(HTML) 9 Page - RF Micro Devices |
9 / 9 page RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS141017 For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com. The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. 9 of 9 RFFM4204 Pin Description Table Pin Name Description 1 VBIAS Bias voltage for the PA. This pin should be tied to VCC 2 GND Ground connection 3 GND Ground connection 4 TX RF Input Port for the PA. Input is matched to 50Ω and DC blocked internally. 5 GND Ground connection 6 PA_EN Control voltage for the PA and Tx switch. See truth table for proper settings. 7 NC No Connect. Can be connected to GND or open. 8 NC No Connect. Can be connected to GND or open. 9 PDET Power detector voltage for transmit mode. PDET voltage varies with output power and may need external decoupling for noise decoupling. 10 RX RF Output Port for the LNA, Input is matched to 50Ω and DC blocked internally. 11 Vdd Supply voltage for the LNA. See applications schematic for biasing and bypassing components. 12 LNA_EN Control Voltage for the LNA. When this pin is set “LOW” LNA bypass switch is closed. 13 C_RX Receive switch control pin. See switch truth table for proper level. 14 GND Ground connection 15 ANT RF bidirectional antenna port matched to 50Ω and DC blocked internally. 16 GND Ground connection 17 GND Ground connection 18 C_TX Transmit switch control pin. See switch truth table for proper level. 19 GND Ground connection 20 GND Ground connection 21 VCC3 Supply voltage for the PA. See applications schematic for biasing and bypassing components. 22 VCC2 Supply voltage for the PA. See applications schematic for biasing and bypassing components. 23 GND Ground connection 24 VCC1 Supply voltage for the PA. See applications schematic for biasing and bypassing components. PKG Base GND Ground slug connection. The backside of the package should be connected directly to the reference ground plane with as many ground vias as possible to minimize ground inductance. |
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