RF5122PCBA-41X View Datasheet(PDF) - RF Micro Devices

Part Name

Description

MFG CO.

RF5122PCBA-41X

3V TO 4.5V, 2.4GHz TO 2.5GHz LINEAR POWER AMPLIFIER

RF Micro Devices 

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RF5122

RF IN

VREG

Application Schematic

for Improved Second Harmonic Performance

VCC 1 μF

1 nF

27 nH

VCC 1 μF

8

7

1

Input

Match

2

3

Interstage

Match

6

Output

Match

Bias Circuit

Power

5

Detector

4**

1.2 nH*

10 pF

2.2 pF*

RF OUT

330 pF

PDETECT

* The 2.2 pF cap can be placed at the same point as the 1.2 nH inductor

which should be as close as possible to the DC blocking cap (10 pF) the

placement can be modified for the best linear performance. A series

capacitor (10 pF) must be added to provide a DC block after the 2F0 Filter.

**Pin 4 must be left as a no-connect on the PCB.

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

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

Rev A5 DS070517

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