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8-306
RF2498
Rev A4 070308
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: Add 2mA to total current.
/2 Select On: Add 2mA to total current.
“X” denotes setting does not impact current.
*For Paging mode set IPSET=0. Total current reduced 2mA.
BAND
SEL
IF
SEL
ENABLE
LNA
GAIN
MIX
GAIN
IP
SET
TX BUFF
ENABLE
/2
SELECT
IDC
(mA)
CDMA Cellular-
High IIP3 LNA Mode*
LNA On, Mixer Preamp On,
TX Buffer Off, /2 Off
01
1
1
11
0
1
27.0
LNA On, Mixer Preamp Off,
TX Buffer Off, /2 Off
01
1
1
01
0
1
22.0
LNA Bypassed, Mixer Preamp On,
TX Buffer Off, /2 Off
01
1
0
1
X
0
1
20.5
LNA Bypassed, Mixer Preamp Off,
TX Buffer Off, /2 Off
01
1
0
0
X
0
1
15.5
FM/JCDMA-
Low Current LNA Mode
LNA On, Mixer Preamp On,
TX Buffer Off, /2 Off
00
1
1
10
0
1
25.0
LNA On, Mixer Preamp Off,
TX Buffer Off, /2 Off
00
1
1
00
0
1
20.0
LNA Bypassed, Mixer Preamp On,
TX Buffer Off, /2 Off
00
1
0
1
X
0
1
20.5
LNA Bypassed, Mixer Preamp Off,
TX Buffer Off, /2 Off
00
1
0
0
X
0
1
15.5
CDMA PCS -
High IIP3 LNA Mode*
LNA On, Mixer Preamp On
TX Buffer Off, /2 Off*
11
1
1
11
0
1
27.5
LNA On, Mixer Preamp Off
TX Buffer Off, /2 Off*
11
1
1
01
0
1
25.5
LNA Bypassed, Mixer Preamp On
TX Buffer Off, /2 Off
11
1
0
1
X
0
1
21.0
LNA Bypassed, Mixer Preamp Off
TX Buffer Off, /2 Off
11
1
0
0
X
0
1
16.0
GPS
LNA On, Mixer On
1
0
1
X
X
0
0
X
24.0
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