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8-412
RF2890
Rev A4 040421
Evaluation Board Current Measurement
NOTES:
All IDC current numbers include bias circuitry current of 1.5mA to 2.0mA (dependent on mode).
TX Buffer On (=1): Add 2mA to total current.
DIV SEL On (=0): Add 2mA to total current.
“X” denotes setting does not impact current.
Cascaded Performance (Typical Values for VCC=2.75V)
NOTE: All total current numbers include bias circuitry current of 1.5mA to 2.0mA (dependent on mode).
BAND
SEL
ENABLE
VG1
VG2
TX BUFF
ENAB
DIV
SEL
IDC
(mA)
CDMA Cellular
ISET2=7.5k
Ω
High Gain Mode,
TX Buffer Off, /2 Off
01
0
0
0
1
23.5
Mid Gain Mode,
TX Buffer Off, /2 Off
01
1
0
0
1
20.5
Low Gain Mode,
TX Buffer Off, /2 Off
01
1
1
0
1
16.5
Alternate Low Gain Mode,
TX Buffer Off, /2 Off
01
0
1
0
1
16.5
GPS
ISET2=7.5k
Ω
GPS Mode
1
1
X
X
X
1
15.5
Parameter
CELL CDMA
HIGH GAIN
MID GAIN
LOW GAIN
Cascaded:
Gain (dB)
23.5
16.0
6.0
Noise Figure (dB)
2.0
5.5
13.0
Input IP3 (dBm)
-3.7
+3.4
+13.5
Total Current (mA)
23.5
20.5
16.5
NOTE: Assumes 2.5dB image filter insertion loss. The TX Buffer is off (TX
BUFF ENAB=0). DIV SEL function is off (=1).
Parameter
GPS
Cascaded:
Gain (dB)
32.5
Noise Figure (dB)
1.8
Input IP3 (dBm)
-18.0
Total Current (mA)
15.5
NOTE: Assumes 1.5dB image filter insertion loss.
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