Datasheet

MAX19985A
Dual, SiGe, High-Linearity, 700MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
8 _______________________________________________________________________________________
2LO-2RF RESPONSE vs. RF FREQUENCY
MAX19985A toc10
RF FREQUENCY (MHz)
2LO-2RF RESPONSE (dBc)
900800
55
60
65
70
75
80
50
700 1000
T
C
= +85
°
C
P
RF
= -5dBm
T
C
= +25
°
C
T
C
= -30
°
C
2LO-2RF RESPONSE vs. RF FREQUENCY
MAX19985A toc11
RF FREQUENCY (MHz)
2LO-2RF RESPONSE (dBc)
900800
55
60
65
70
75
80
50
700 1000
P
LO
= 0dBm
P
LO
= +3dBm
P
LO
= -3dBm
P
RF
= -5dBm
2LO-2RF RESPONSE vs. RF FREQUENCY
MAX19985A toc12
RF FREQUENCY (MHz)
2LO-2RF RESPONSE (dBc)
900800
55
60
65
70
75
80
50
700 1000
P
RF
= -5dBm
V
CC
= 4.75V, 5.0V, 5.25V
3LO-3RF RESPONSE vs. RF FREQUENCY
MAX19985A toc13
RF FREQUENCY (MHz)
3LO-3RF RESPONSE (dBc)
900800
65
75
85
95
55
700 1000
P
RF
= -5dBm
T
C
= +85
°
C
T
C
= +25
°
C
T
C
= -30
°
C
3LO-3RF RESPONSE vs. RF FREQUENCY
MAX19985A toc14
RF FREQUENCY (MHz)
3LO-3RF RESPONSE (dBc)
900800
65
75
85
95
55
700 1000
P
RF
= -5dBm
P
LO
= -3dBm, 0dBm, +3dBm
3LO-3RF RESPONSE vs. RF FREQUENCY
MAX19985A toc15
RF FREQUENCY (MHz)
3LO-3RF RESPONSE (dBc)
900800
65
75
85
95
55
700 1000
P
RF
= -5dBm
V
CC
= 4.75V, 5.0V, 5.25V
INPUT P
1dB
vs. RF FREQUENCY
MAX19985A toc16
RF FREQUENCY (MHz)
INPUT P
1dB
(dBm)
900800
11
13
12
14
15
10
700 1000
T
C
= +85
°
C
T
C
= +25
°
C
T
C
= -30°C
INPUT P
1dB
vs. RF FREQUENCY
MAX19985A toc17
RF FREQUENCY (MHz)
INPUT P
1dB
(dBm)
900800
11
13
12
14
15
10
700 1000
P
LO
= -3dBm, 0dBm, +3dBm
INPUT P
1dB
vs. RF FREQUENCY
MAX19985A toc18
RF FREQUENCY (MHz)
INPUT P
1dB
(dBm)
900800
11
13
12
14
15
10
700 1000
V
CC
= 5.0V
V
CC
= 5.25V
V
CC
= 4.75V
Typical Operating Characteristics (continued)
( Typical Application Circuit , V
CC
= +5.0V, P
LO
= 0dBm, P
RF
= -5dBm, LO is high-side injected for a 200MHz IF, T
C
=+25°C, unless
otherwise noted.)