Manual

_______________________________________________________________________________________ 7
MAX2338
Triple/Dual-Mode CDMA LNA/Mixers
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
850 860 870 880 890 900
CELLULAR-BAND MIXER NOISE FIGURE
vs. RF FREQUENCY
MAX2338 toc19
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
FM
HGHL
HGLL
PARALLEL RESISTANCE (kΩ)
0
20
10
40
30
50
60
0 200100 300 400 500
FM MIXER IF PORT DIFFERENTIAL
PORT IMPEDANCE
MAX2338 toc23
RF FREQUENCY (MHz)
PARALLEL RESISTANCE (kΩ)
0
1.0
0.5
2.0
1.5
2.5
3.0
CAPACITANCE
RESISTANCE
-80
-60
-70
-50
-20
-10
-30
-40
0
-15 -10 -5 0 5
PCS-BAND LO BUFFER OUTPUT LEVEL
vs. INPUT LEVEL
MAX2338 toc24
LO INPUT LEVEL (dBm)
OUTPUT LEVEL (dBm)
LO
2 X LO
3 X LO
0 200100 300 400
0
15
45
30
60
75
500
CDMA MIXER IF PORT DIFFERENTIAL
PORT IMPEDANCE
MAX2338 toc22
RF FREQUENCY (MHz)
PARALLEL RESISTANCE (kΩ)
0
0.4
1.2
0.8
1.6
2.0
PARALLEL RESISTANCE (kΩ)
CAPACITANCE
RESISTANCE
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
1920 1940 1960 1980 2000
PCS-BAND MIXER
NOISE FIGURE vs. RF FREQUENCY
MAX2338 toc20
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
HGHL LOW SIDE LO
HGLL LOW SIDE LO
HGHL HIGH SIDE LO
HGLL HIGH SIDE LO
OUTPUT LEVEL (dBm)
0
-10
-20
-30
-40
-15 -5-10 0 5
CELLULAR-BAND LO BUFFER
OUTPUT LEVEL vs. INPUT LEVEL
MAX2338 toc21
LO INPUT LEVEL (dBm)
LO / 2
2 X LO / 2
3 X LO / 2