Datasheet
MAX2051
SiGe, High-Linearity, 850MHz to 1550MHz
Up/Downconversion Mixer with LO Buffer
_______________________________________________________________________________________
9
MAX2051 toc28
2240198017201460
15
10
5
0
20
1200 2500
LO PORT RETURN LOSS vs. LO FREQUENCY
(DOWNCONVERSION MODE)
LO FREQUENCY (MHz)
LO PORT RETURN LOSS (dB)
P
LO
= -3dBm
P
LO
= 0dBm
P
LO
= +3dBm
SUPPLY CURRENT vs. EXPOSED PAD
TEMPERATURE (T
C
)
(DOWNCONVERSION MODE)
MAX2051 toc29
EXPOSED PAD TEMPERATURE (°C)
SUPPLY CURRENT (mA)
603510-15
80
90
100
110
120
130
70
-40 85
V
CC
= 5.0V
V
CC
= 5.25V
V
CC
= 4.75V
MAX2051 toc30
IIP3 vs. IF FREQUENCY
(ALTERNATIVE VALUES OF C2)
IF FREQUENCY (MHz)
IIP3 (dBm)
850650450250
26
34
32
30
28
36
38
40
50 1050
P
RF
= 0dBm/TONE
DOWNCONVERSION MODE
OPEN LSB, USB
2.0pF LSB, USB
1.5pF LSB, USB
1.0pF LSB, USB
f
RF
= 1200MHz
MAX2051 toc31
2RF-LO vs. IF FREQUENCY
(ALTERNATIVE VALUES OF C2)
IF FREQUENCY (MHz)
2RF-LO (dBc)
770590410230
-85
-75
-80
-70
-65
-60
50 950
P
RF
= 0dBm
DOWNCONVERSION MODE
OPEN
1.0pF
1.5pF
2.0pF
1.0pF
1.5pF
2.0pF
OPEN
f
RF
= 1200MHz
MAX2051 toc32
2LO-2RF vs. IF FREQUENCY
(ALTERNATIVE VALUES OF C2)
IF FREQUENCY (MHz)
2LO-2RF (dBc)
770590410230
-75
-65
-70
-60
-55
-50
50 950
P
RF
= 0dBm
DOWNCONVERSION MODE
OPEN
1.0pF, 1.5pF, 2.0pF
1.0pF
1.5pF
2.0pF
OPEN
f
RF
= 1200MHz
MAX2051 toc34
2RF-LO vs. IF FREQUENCY
(VARIOUS LO DRIVE LEVELS)
IF FREQUENCY (MHz)
2RF-LO (dBc)
810620430240
-90
-85
-75
-80
-70
-65
-60
50 1000
P
LO
= -3dBm
P
LO
= +9dBm
DOWNCONVERSION MODE
f
RF
= 1200MHz
P
LO
= 0dBm
P
LO
= +3dBm
P
LO
= +6dBm
MAX2051 toc35
2LO-2RF vs. IF FREQUENCY
(VARIOUS LO DRIVE LEVELS)
IF FREQUENCY (MHz)
2LO-2RF (dBc)
810620430240
-80
-75
-65
-70
-60
-55
-50
50 1000
P
LO
= -3dBm
P
LO
= 0dBm
P
LO
= +3dBm
P
LO
= +6dBm
P
LO
= +9dBm
DOWNCONVERSION MODE
f
RF
= 1200MHz
MAX2051 toc33
3LO-3RF vs. IF FREQUENCY
(ALTERNATIVE VALUES OF C2)
IF FREQUENCY (MHz)
3LO-3RF (dBc)
770590410230
-80
-75
-65
-70
-60
-55
-50
50 950
P
RF
= 0dBm
DOWNCONVERSION MODE
OPEN
1.0pF
1.5pF
2.0pF
1.0pF
1.5pF
2.0pF
OPEN
f
RF
= 1200MHz
Typical Operating Characteristics (continued)
(
Typical Application Circuit
, Downconversion mode, V
CC
= +5.0V, P
LO
= 0dBm, P
RF
= 0dBm, f
RF
= 1200MHz, LO is high-side
injected, T
C
= +25°C, unless otherwise noted.)