Datasheet
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
7
Maxim Integrated
OUTPUT IP3 vs. LO FREQUENCY
MAX2021 toc10
LO FREQUENCY (MHz)
OUTPUT IP3 (dBm)
11251050975900825
15
20
25
30
10
750 1200
P
LO
= +3dBm
P
LO
= -3dBm
P
LO
= -6dBm
P
LO
= 0dBm
T
C
= +25°C
OUTPUT IP3
vs. COMMON-MODE VOLTAGE
MAX2021 toc11
COMMON-MODE VOLTAGE (V)
OUTPUT IP3 (dBm)
1.750-1.75
21
22
23
24
25
26
20
-3.50 3.50
f
LO
= 900MHz, P
LO
= 0dBm
OUTPUT IP3
vs. COMMON-MODE VOLTAGE
MAX2021 toc12
COMMON-MODE VOLTAGE (V)
OUTPUT IP3 (dBm)
1.750-1.75
21
22
23
24
25
26
20
-3.50 3.50
f
LO
= 1000MHz
OUTPUT IP2 vs. LO FREQUENCY
MAX2021 toc13
LO FREQUENCY (MHz)
OUTPUT IP2 (dBm)
11251050975900825
50
60
70
80
40
750 1200
T
C
= +25°C
T
C
= -40°C
T
C
= +85°C
OUTPUT IP2 vs. LO FREQUENCY
MAX2021 toc14
LO FREQUENCY (MHz)
OUTPUT IP2 (dBm)
11251050975900825
50
60
70
80
40
750 1200
V
CC
= 5.0V
V
CC
= 5.25V
V
CC
= 4.75V
OUTPUT IP2 vs. LO FREQUENCY
MAX2021 toc15
LO FREQUENCY (MHz)
OUTPUT IP2 (dBm)
11251050975900825
50
60
70
80
40
750 1200
P
LO
= +3dBm
P
LO
= -6dBm
P
LO
= -3dBm
P
LO
= 0dBm
OUTPUT IP2
vs. COMMON-MODE VOLTAGE
MAX2021 toc16
COMMON-MODE VOLTAGE (V)
OUTPUT IP2 (dBm)
1.750-1.75
60
65
70
75
80
55
-3.50 3.50
f
LO
= 900MHz
OUTPUT IP2
vs. COMMON-MODE VOLTAGE
MAX2021 toc17
COMMON-MODE VOLTAGE (V)
OUTPUT IP2 (dBm)
1.750-1.75
60
55
65
70
50
-3.50 3.50
f
LO
= 1000MHz
MODULATOR OUTPUT POWER
vs. INPUT POWER
MAX2021 toc18
INPUT POWER (dBm)
OUTPUT POWER (dBm)
1916 252213
10
5
0
15
20
-5
10 28
INPUT SPLIT BETWEEN I AND Q,
f
IF
= 25MHz, f
LO
= 900MHz
V
CC
= 4.75V, 5.0V, 5.25V
Typical Operating Characteristics (continued)
(MAX2021
Typical Application Circuit
, V
CC
= 4.75V to 5.25V, GND = 0V, I/Q differential inputs driven from a 100Ω DC-coupled source,
0V common-mode input, P
LO
= 0dBm, 750MHz ≤ f
LO
≤ 1200MHz, 50Ω LO and RF system impedance, R1 = 432Ω, R2 = 619Ω, R3 =
332Ω, 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