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MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
Typical Operating Characteristics (continued)
(MAX2021 Typical Application Circuit, V CC = 4.75V to 5.25V, GND = 0V, I/Q differential inputs driven from a 100 ? DC-coupled source,
0V common-mode input, P LO = 0dBm, 750MHz ≤ f LO ≤ 1200MHz, 50 ? LO and RF system impedance, R1 = 432 ? , R2 = 619 ? , R3 =
332 ? , T C = -40°C to +85°C. Typical values are at V CC = 5V, V BBI = 1.4V P-P differential, V BBQ = 1.4V P-P differential, f IQ = 1MHz,
f LO = 900MHz, T C = +25°C, unless otherwise noted.)
MODULATOR
OUTPUT IP3
OUTPUT IP3
30
OUTPUT IP3 vs. LO FREQUENCY
T C = +25 ° C
P LO = -3dBm
26
25
vs. COMMON-MODE VOLTAGE
f LO = 900MHz, P LO = 0dBm
26
25
vs. COMMON-MODE VOLTAGE
f LO = 1000MHz
25
20
P LO = +3dBm
24
23
24
23
15
P LO = 0dBm
P LO = -6dBm
22
22
21
21
10
20
20
750
825
900
975
1050
1125
1200
-3.50
-1.75
0
1.75
3.50
-3.50
-1.75
0
1.75
3.50
80
LO FREQUENCY (MHz)
OUTPUT IP2 vs. LO FREQUENCY
80
COMMON-MODE VOLTAGE (V)
OUTPUT IP2 vs. LO FREQUENCY
80
COMMON-MODE VOLTAGE (V)
OUTPUT IP2 vs. LO FREQUENCY
70
60
50
T C = -40 ° C
T C = +25 ° C
70
60
50
V CC = 5.25V
V CC = 5.0V
70
60
50
P LO = +3dBm
P LO = 0dBm
P LO = -6dBm
40
T C = +85 ° C
40
V CC = 4.75V
40
P LO = -3dBm
750
825
900
975
1050
1125
1200
750
825
900
975
1050
1125
1200
750
825
900
975
1050
1125
1200
LO FREQUENCY (MHz)
OUTPUT IP2
vs. COMMON-MODE VOLTAGE
LO FREQUENCY (MHz)
OUTPUT IP2
vs. COMMON-MODE VOLTAGE
LO FREQUENCY (MHz)
MODULATOR OUTPUT POWER
vs. INPUT POWER
80
f LO = 900MHz
70
f LO = 1000MHz
20
INPUT SPLIT BETWEEN I AND Q,
f IF = 25MHz, f LO = 900MHz
75
70
65
65
60
15
10
5
60
55
55
50
0
-5
V CC = 4.75V, 5.0V, 5.25V
-3.50
-1.75
0
1.75
3.50
-3.50
-1.75
0
1.75
3.50
10
13
16
19
22
25
28
COMMON-MODE VOLTAGE (V)
Maxim Integrated
COMMON-MODE VOLTAGE (V)
INPUT POWER (dBm)
7
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