RF3196SB Ver la hoja de datos (PDF) - RF Micro Devices
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RF3196SB Datasheet PDF : 16 Pages
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RF3196
Into a mismatch, the current varies as the phase changes. The power flattening circuit monitors current through an internal
sense resistor. As the current changes, the loop is adjusted in order to maintain current. The result is flatter power and reduced
current into mismatch. When compared to the RF3166, the RF3196 shows less current variation and has less power variation.
Below, in Figure 2, is the power variation comparison.
35.8
Power Variation VSWR=3:1
VRAMP=VRAMPRP=34.2dBm into 50
Freq=880, Temp=Room, PIN=5dBm, VBATT=4.5V
35.6
RF3196
35.4
RF3166
35.2
35.0
34.8
34.6
34.4
34.2
34.0
33.8
33.6
33.4
33.2
33.0
32.8
32.6
32.4
32.2
0 20 40 60 80 10 12 14 16 18 20 22 24 26 28 30 32 34 36
00000000000000
Phase Angle (°)
Figure 2. Power Variation into Mismatch
As previously discussed, reducing the power variation results in reduced current variation. Below, in Figure 3, is the current
variation comparison.
Current Variation VSWR=3:1
VRAMP=VRAMPRP=34.2dBm into 50
3.0
Freq=880, Temp=Room, PIN=5dBm, VBATT=4.5V
2.8
RF3196
2.6
RF3166
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
20 40 60 80 10 12 14 16 18 20 22 24 26 28
0000000000
Phase Angle (°)
30 32
00
34 36
00
Figure 3. Current Variation into Mismatch
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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 A2 DS071207
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