User Manual

Typical Operating Characteristics
( Typical Application Circuit , V
CC
= +5.0V, 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
6 _______________________________________________________________________________________
CONVERSION GAIN vs. RF FREQUENCY
MAX19999 toc01
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
3800360034003200
7
8
9
10
6
3000 4000
T
C
= +25
°
C
T
C
= +85
°
C
T
C
= -30
°
C
CONVERSION GAIN vs. RF FREQUENCY
MAX19999 toc02
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
3800360034003200
7
8
9
10
6
3000 4000
P
LO
= -3dBm, 0dBm, +3dBm
CONVERSION GAIN vs. RF FREQUENCY
MAX19999 toc03
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
3800360034003200
7
8
9
10
6
3000 4000
V
CC
= 4.75V, 5.0V, 5.25V
INPUT IP3 vs. RF FREQUENCY
MAX19999 toc04
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800360034003200
23
24
25
26
27
22
3000 4000
T
C
= +25
°
C
T
C
= +85
°
C
T
C
= -30
°
C
P
RF
= -5dBm/TONE
INPUT IP3 vs. RF FREQUENCY
MAX19999 toc05
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800360034003200
23
24
25
26
27
22
3000 4000
P
RF
= -5dBm/TONE
P
LO
= -3dBm, 0dBm, +3dBm
INPUT IP3 vs. RF FREQUENCY
MAX19999 toc06
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
3800360034003200
23
24
25
26
27
22
3000 4000
P
RF
= -5dBm/TONE
V
CC
= 4.75V, 5.0V, 5.25V
NOISE FIGURE vs. RF FREQUENCY
MAX19999 toc07
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
372535503375
8
9
10
11
12
13
7
3200 3900
T
C
= +25
°
C
T
C
= +85
°
C
T
C
= -30
°
C
NOISE FIGURE vs. RF FREQUENCY
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
MAX19999 toc08
3200 3375 3550 3725 3900
7
8
9
10
11
12
13
P
LO
= -3dBm, 0dBm, +3dBm
NOISE FIGURE vs. RF FREQUENCY
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
MAX19999 toc09
3200 3375 3550 3725 3900
7
8
9
10
11
12
13
V
CC
= 4.75V, 5.0V, 5.25V