MAX9993
High-Linearity 1700MHz to 2200MHz Down-
Conversion Mixer with LO Buffer/Switch
6 _______________________________________________________________________________________
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX9993 toc27
RF-TO-IF ISOLATION (dB)
215021002000 20501800 1850 1900 19501750
37.5
40.0
42.5
45.0
47.5
50.0
52.5
55.0
57.5
35.0
1700 2200
LO FREQUENCY (MHz)
213820561892 19741564 1646 1728 181014821400 2220
V
CC
= +4.75V, +5.0V, +5.25V
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX9993 toc26
RF-TO-IF ISOLATION (dB)
215021002000 20501800 1850 1900 19501750
37.5
40.0
42.5
45.0
47.5
50.0
52.5
55.0
57.5
35.0
1700 2200
LO FREQUENCY (MHz)
213820561892 19741564 1646 1728 181014821400 2220
P
LO
= 0dBm, +3dBm, +6dBm
RF FREQUENCY (MHz)
RF-TO-IF ISOLATION vs. FREQUENCY
MAX9993 toc25
RF-TO-IF ISOLATION (dB)
215021002000 20501800 1850 1900 19501750
37.5
40.0
42.5
45.0
47.5
50.0
52.5
55.0
57.5
35.0
1700 2200
LO FREQUENCY (MHz)
213820561892 19741564 1646 1728 181014821400 2220
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
RF FREQUENCY (MHz)
LO LEAKAGE AT RF PORT
vs. LO FREQUENCY
MAX9993 toc24
LO LEAKAGE (dBm)
-35
-30
-25
-20
-15
-40
IF PORT
TERMINATED IN 50Ω
P
LO
= +6dBm
P
LO
= +3dBm
LO FREQUENCY (MHz)
2300220021002000190018001700160015001400 2400
P
LO
= 0dBm
MAX9993 toc23
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
2100200019001800170016001500
-45
-40
-35
-30
-50
1400 2200
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
V
CC
= 4.75V
V
CC
= 5.0V
V
CC
= 5.25V
MAX9993 toc22
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
2100200019001800170016001500
-45
-40
-35
-30
-50
1400 2200
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
P
LO
= +3dBm
P
LO
= +6dBm
P
LO
= 0dBm
MAX9993 toc21
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
2100200019001800170016001500
-45
-40
-35
-30
-50
1400 2200
LO LEAKAGE AT IF PORT
vs. LO FREQUENCY
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
MAX9993 toc20
LO SWITCH ISOLATION vs. RF FREQUENCY
HIGH-SIDE INJECTION
LO SWITCH ISOLATION (dB)
35
36
37
38
39
40
41
42
43
44
34
RF FREQUENCY (MHz)
2150210020502000195019001850180017501700 2200
P
LO1
= P
LO2
= +3dBm
∆f
LO
= 1MHz
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
MAX9993 toc19
LO SWITCH ISOLATION vs. RF FREQUENCY
LOW-SIDE INJECTION
LO SWITCH ISOLATION (dB)
35
36
37
38
39
40
41
42
43
44
34
RF FREQUENCY (MHz)
2150210020502000195019001850180017501700 2200
V
CC
= 4.75, 5.00, 5.25V
P
LO1
= P
LO2
= +3dBm
∆f
LO
= 1MHz
Typical Operating Characteristics (continued)
(MAX9993 EV Kit, V
CC
= 5.0V, P
RF
= -5dBm, P
LO
= +3dBm, LO is low-side injected for a 200MHz IF, T
A
= +25°C. For high-side LO
injection curves, LO frequency is beyond maximum specified range, and is shown for completeness.)