User Manual

Typical Operating Characteristics (continued)
( Typical Application Circuit, V
CC
= +3.3V, LO is low-side injected for a 350MHz IF, P
LO
= 0dBm, P
RF
= -5dBm, T
C
=+25°C, unless
otherwise noted.)
MAX19999
Dual, SiGe High-Linearity, 3000MHz to
4000MHz Downconversion Mixer with LO Buffer
______________________________________________________________________________________ 11
INPUT IP3 vs. RF FREQUENCY
MAX19999 toc41
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800360034003200
20
19
21
22
23
18
3000 4000
P
RF
= -5dBm/TONE
V
CC
= 3.3V
T
C
= +25°C
T
C
= -30°C
T
C
= +85°C
INPUT IP3 vs. RF FREQUENCY
MAX19999 toc42
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800360034003200
20
19
21
22
23
18
3000 4000
P
RF
= -5dBm/TONE
V
CC
= 3.3V
P
LO
= -3dBm, 0dBm, +3dBm
INPUT IP3 vs. RF FREQUENCY
MAX19999 toc43
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800360034003200
20
19
21
22
23
18
3000 4000
P
RF
= -5dBm/TONE
V
CC
= 3.0V, 3.3V, 3.6V
NOISE FIGURE vs. RF FREQUENCY
MAX19999 toc44
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
372535503375
10
9
8
11
12
13
7
3200 3900
T
C
= +25°C
T
C
= -30°C
V
CC
= 3.3V
T
C
= +85°C
NOISE FIGURE vs. RF FREQUENCY
MAX19999 toc45
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
372535503375
10
9
8
11
12
13
7
3200 3900
V
CC
= 3.3V
P
LO
= -3dBm, 0dBm, +3dBmP
LO
= -3dBm, 0dBm, +3dBmP
LO
= -3dBm, 0dBm, +3dBm
NOISE FIGURE vs. RF FREQUENCY
MAX19999 toc46
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
372535503375
10
9
8
11
12
13
7
3200 3900
V
CC
= 3.0V, 3.3V, 3.6V
2RF-2LO RESPONSE vs. RF FREQUENCY
MAX19999 toc47
RF FREQUENCY (MHz)
2RF-2LO RESPONSE (dBc)
3600 380034003200
70
60
80
90
50
3000 4000
P
RF
= -5dBm
V
CC
= 3.3V
T
C
= +25°C
T
C
= -30°C
T
C
= +85°C
2RF-2LO RESPONSE vs. RF FREQUENCY
MAX19999 toc48
RF FREQUENCY (MHz)
2RF-2LO RESPONSE (dBc)
34003200 38003600
60
70
80
90
50
3000 4000
P
RF
= -5dBm
V
CC
= 3.3V
P
LO
= 0dBm
P
LO
= +3dBm
P
LO
= -3dBm
2RF-2LO RESPONSE vs. RF FREQUENCY
MAX19999 toc49
RF FREQUENCY (MHz)
2RF-2LO RESPONSE (dBc)
34003200 38003600
60
70
80
90
50
3000 4000
P
RF
= -5dBm
V
CC
= 3.6V
V
CC
= 3.0V
V
CC
= 3.3V