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8-386
RF2860
Rev A7 031105
LNA Performance versus Current (As a function of ISET1 Resistance)
Mixer Performance versus Current (As a function of ISET2 Resistance)
Evaluation Board Current Measurement
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).
Gain (dB)
IIP3 (dBm)
Noise Figure (dB)
ISET1 Resistance (k
Ω)
Current (mA)
15.6
7.3
1.4
36
4.6
15.7
9.7
1.4
33
4.9
15.9
16.8
1.4
30
5.4
16.1
12.3
1.4
27
6.1
16.2
10.6
1.4
24
6.7
16.4
9.6
1.4
22
7.3
16.4
9.4
1.4
20
7.9
Gain (dB)
IIP3 (dBm)
Noise Figure (dB)
ISET2 Resistance (k
Ω)
Current (mA)
14.2
4.0
6.7
6.8
25.6
14.2
3.7
6.6
7.5
24.6
14.1
3.5
6.5
8.3
23.9
14.0
2.9
6.4
9.1
22.8
13.8
2.6
6.4
10.0
22.2
13.8
2.4
6.3
11.0
21.8
13.5
1.8
6.3
12.0
20.7
ENABLE
LNA
GAIN
TX BUFF
ENAB
IDC
(mA)
US PCS Band
Korean PCS Band
LNA On, TX Buffer Off
1
1
0
27.5
LNA Bypassed, TX Buffer Off
1
0
0
21.0
GPS Band
LNA On, TX Buffer Off
1
1
0
24.5
LNA Bypassed, TX Buffer Off
1
0
0
18.5
IMT-2000 Band
LNA On, TX Buffer Off
1
1
0
24.5
LNA Bypassed, TX Buffer Off
1
0
0
18.5
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.
Parameter
KPCS CDMA
PCS CDMA
GPS
IMT-2000
LNA ON
LNA OFF
LNA ON
LNA OFF
LNA ON
LNA OFF
LNA ON
LNA OFF
Cascaded:
Gain (dB)
28.0
6.5
27.5
6.5
33.25
11.0
25.5
6.0
Noise Figure (dB)
1.8
14.5
2.0
14.5
1.7
15.0
2.5
16.0
Input IP3 (dBm)
-11.0
+10.0
-11.0
+10.0
-17.0
5.3
-12.0
+7.2
LO to IF Isolation (dB)
40
40
40
40
40
40
40
40
IF1 to RF Isolation (dB)
40
40
40
40
40
40
40
40
IF2 to RF Isolation (dB)
40
40
40
40
40
40
40
40
LO to LNA IN Isolation (dB)
40
40
40
40
40
40
40
40
Total Current (mA)
27.5
21.0
27.5
21.0
24.5
18.5
24.5
18.5
NOTE: Assumes 2.5dB image filter insertion loss. The TX Buffer is off.
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