Datasheet
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
6
Maxim Integrated
Typical Operating Characteristics
(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.)
TOTAL SUPPLY CURRENT
vs. TEMPERATURE (T
C
)
MAX2021 toc01
TEMPERATURE (°C)
TOTAL SUPPLY CURRENT (mA)
603510-15
220
240
260
280
V
CC
= 4.75V
V
CC
= 5.0V
300
200
-40 85
V
CC
= 5.25V
ACLR vs. OUTPUT POWER PER CARRIER
MAX2021 toc02
OUTPUT POWER PER CARRIER (dBm)
ACLR (dB)
-17-27-37
-78
-76
-74
-72
-70
-68
-66
-64
-62
-60
-80
-47 -7
SINGLE-CARRIER WCDMA
ADJACENT CHANNEL
ALTERNATE CHANNEL
ACLR vs. OUTPUT POWER PER CARRIER
MAX2021 toc03
OUTPUT POWER PER CARRIER (dBm)
ACLR (dB)
-17-27-37
-78
-76
-74
-72
-70
-68
-66
-64
-62
-60
-80
-47 -7
ADJACENT CHANNEL
ALTERNATE CHANNEL
TWO-CARRIER WCDMA
ACLR vs. OUTPUT POWER PER CARRIER
MAX2021 toc04
OUTPUT POWER PER CARRIER (dBm)
ACLR (dB)
-17-27-37
-78
-76
-74
-72
-70
-68
-66
-64
-62
-60
-80
-47 -7
FOUR-CARRIER WCDMA
ADJACENT CHANNEL
ALTERNATE CHANNEL
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
MAX2021 toc05
LO FREQUENCY (MHz)
SIDEBAND SUPPRESSION (dBc)
11251050975900825
20
30
40
50
60
70
10
750 1200
P
LO
= -3dBm
P
LO
= -6dBm
P
LO
= 0dBm
P
LO
= +3dBm
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
MAX2021 toc06
LO FREQUENCY (MHz)
SIDEBAND SUPPRESSION (dBc)
11251050975900825
20
30
40
50
60
70
10
750 1200
V
CC
= 4.75V, 5.0V, 5.25V
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
MAX2021 toc07
LO FREQUENCY (MHz)
SIDEBAND SUPPRESSION (dBc)
11251050975900825
20
30
40
50
60
70
10
750 1200
T
C
= +25°C
T
C
= +85°C
T
C
= -40°C
OUTPUT IP3 vs. LO FREQUENCY
MAX2021 toc08
LO FREQUENCY (MHz)
OUTPUT IP3 (dBm)
11251050975900825
15
20
25
30
10
750 1200
T
C
= -40°C
T
C
= +85°C
T
C
= +25°C
P
LO
= 0dBm, V
CC
= 5.0V
OUTPUT IP3 vs. LO FREQUENCY
MAX2021 toc09
LO FREQUENCY (MHz)
OUTPUT IP3 (dBm)
11251050975900825
15
20
25
30
10
750 1200
V
CC
= 5.25V
V
CC
= 5.0V
V
CC
= 4.75V
T
C
= +25°C
MODULATOR