Datasheet

MAX9984
SiGe High-Linearity, 400MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
8 _______________________________________________________________________________________
Typical Operating Characteristics
(MAX9984 Typical Application Circuit, using component values in Table 2, V
CC
= +5.0V, P
LO
= 0dBm, P
RF
= -5dBm, f
IF
= 75MHz,
unless otherwise noted.)
70
65
60
55
50
45
400 440420 460 480 500
2RF-2LO RESPONSE vs. RF FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc38
RF FREQUENCY (MHz)
2RF-2LO RESPONSE (dBc)
LOW-SIDE INJECTION,
f
RF
> f
LO
P
RF
= -5dBm
T
C
= +85°C
T
C
= +25°C
T
C
= -25°C, -40°C
26
25
24
23
22
21
20
19
400 440420 460 480 500
INPUT IP3 vs. RF FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc37
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
LOW-SIDE INJECTION, f
RF
> f
LO
T
C
= +85°C
T
C
= -25°C
T
C
= +25°C
T
C
= -40°C
75
65
55
45
35
400 440420 460 480 500
3RF-3LO RESPONSE vs. RF FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc39
RF FREQUENCY (MHz)
3RF-3LO RESPONSE (dBc)
T
C
= +85°C
T
C
= +25°C
T
C
= -25°C, -40°C
LOW-SIDE INJECTION, f
RF
> f
LO
P
RF
= -5dBm
0
5
10
15
20
25
30
400 440420 460 480 500
RF PORT RETURN LOSS vs. RF FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc40
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
V
CC
= 5.0V, P
LO
= 0dBm, T
C
= +25°C
LOW-SIDE INJECTION, f
RF
> f
LO
40
30
20
10
0
50 100 150 200
IF PORT RETURN LOSS vs. IF FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc41
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
V
CC
= 5.0V, P
LO
= 0dBm, T
C
= +25°C
LOW-SIDE INJECTION, f
RF
> f
LO
0
5
10
15
20
25
30
325 365345 385 405 425
LO SELECTED RETURN LOSS vs. LO FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc42
LO FREQUENCY (MHz)
LO SELECTED RETURN LOSS (dB)
V
CC
= 5.0V, P
LO
= 0dBm, T
C
= +25°C
LOW-SIDE INJECTION, f
RF
> f
LO
0
5
10
15
20
25
30
325 365345 385 405 425
LO UNSELECTED RETURN LOSS vs. LO FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc43
LO FREQUENCY (MHz)
LO UNSELECTED RETURN LOSS (dB)
V
CC
= 5.0V, P
LO
= 0dBm, T
C
= +25°C
LOW-SIDE INJECTION, f
RF
> f
LO
10
9
8
7
6
5
400 440420 460 480 500
CONVERSION GAIN vs. RF FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc44
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
HIGH-SIDE INJECTION, f
LO
> f
RF
T
C
= +85°C
T
C
= -40°C
T
C
= +25°C
T
C
= -25°C
10
9
8
7
6
5
400 440420 460 480 500
CONVERSION GAIN vs. RF FREQUENCY
(TUNED FOR 400MHz TO 500MHz RF FREQUENCY)
MAX9984 toc36
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
LOW-SIDE INJECTION, f
RF
> f
LO
T
C
= +85°C
T
C
= -40°C
T
C
= +25°C
T
C
= -25°C