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Preliminary
8-48
RF2460
Rev A7 010912
8
Special Instructions (Board loss, taking into consideration description in the schematic)
LNA
VCC1=VCC2=Enable=2.75V; Mix Gain=0.0V
To measure ICC LNA only:
LNA Gain was switched between 0V and 2.75V, and record the delta current.
Mixer
VCC1=VCC2=Enable=Mix Gain=2.75V; LNA Gain=0.0V
To measure ICC Mixer (LNA should be in bypass mode and LO signal should be present):
Total mixer current= ICC1
VCC2 only affects LO current buffer and R6 doesn’t affect the mixer current.
LNA Gain, NoiseFigure and IIP3versusICC -LNA Only
(LNA High Gain)
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
1.0
3.0
5.0
7.0
9.0
11.0
13.0
15.0
17.0
ICC (mA)
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
Gain (dB)
NF (dB)
IIP3 (dBm)
Mixer Gain, Noise Figure and IIP3 versus ICC -Mixer
(Mixer High Gain, LO = -7 dBm)
-20.0
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
ICC (mA)
-15.0
-10.0
-5.0
0.0
5.0
10.0
Gain (dB)
NF (dB)
IIP3 (dBm)
Resistor (R6) versus ICC (mA) - LNA Only
(LNA High Gain)
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
180.0
200.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
ICC (mA)
Resistor (R3) versus ICC - Mixer
(Mixer High Gain, LO = 2170 @ -7 dBm)
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
180.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
ICC (mA)
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