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RF2163PCBA

3V, 2.5GHz LINEAR POWER AMPLIFIER

RF Micro Devices 

RF2163

Power sensing is implemented with the PWR SEN and PWR REF lines. The outputs of these pins are transistor collectors and

need to be pulled up to the supply through a resistor. PWR REF provides an output current proportional to the output stage bias

current, and PWR SEN provides an output current proportional to the total (RF and bias) current of the output stage. The pull-

lup resistors convert these currents to voltages, and the voltage difference between these two pins is proportional to the RF

current. See the graph, “VREF-VSENSE versus POUT”, for the response of this signal. This difference signal can be fed to a power

control circuit elsewhere in the end product, or it can be processed at the PA with additional circuitry and used to adjust the

VREG voltage(s) to implement automatic level control. Contact RFMD Sales or Applications Engineering for additional data and

guidance in using this feature.

The RF2163 has primarily been characterized with a voltage on VREG1 and VREG2 of 2.4VDC. However, the RF2163 will operate

from a wide range of control voltages. If you prefer to use a control voltage that is significantly different than 2.4VDC, contact

RFMD Sales or Applications Engineering for additional data and guidance.

Rev A6 DS060301

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

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

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