High-Dynamic-Range, Direct Up-/Downconversion
750MHz to 1200MHz Quadrature Mod/Demod
Typical Operating Characteristics
(MAX2021 Typical Application Circuit, VCC = +4.75V to +5.25V, GND = 0V, I/Q differential inputs driven from a 100Ω DC-coupled
source, 0V common-mode input, PLO = 0dBm, 750MHz ≤ fLO ≤ 1200MHz, 50Ω LO and RF system impedance, R1 = 432Ω, R2 = 619Ω,
R3 = 332Ω, TC = -40°C to +85°C. Typical values are at VCC = +5V, VBBI = 1.4VP-P differential, VBBQ = 1.4VP-P differential, fIQ = 1MHz,
fLO = 900MHz, TC = +25°C, unless otherwise noted.)
TOTAL SUPPLY CURRENT
MODULATOR
vs. TEMPERATURE (TC)
ACLR vs. OUTPUT POWER PER CARRIER
ACLR vs. OUTPUT POWER PER CARRIER
300
-60
-60
-62
280
VCC = 5.25V
-64
-66
-62
-64
-66
ADJACENT CHANNEL
260
-68
ADJACENT CHANNEL
-68
VCC = 5.0V
240
VCC = 4.75V
-70
-72
ALTERNATE CHANNEL
-74
-70
-72
-74
ALTERNATE CHANNEL
220
-76
-76
200
-40 -15
10
35
60
85
TEMPERATURE (°C)
-78
SINGLE-CARRIER WCDMA
-80
-47
-37
-27
-17
-7
OUTPUT POWER PER CARRIER (dBm)
-78
TWO-CARRIER WCDMA
-80
-47
-37
-27
-17
-7
OUTPUT POWER PER CARRIER (dBm)
ACLR vs. OUTPUT POWER PER CARRIER
-60
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
70
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
70
-62
ADJACENT CHANNEL
-64
60
PLO = -3dBm
PLO = -6dBm
60
-66
50
50
-68
-70
ALTERNATE CHANNEL
40
40
-72
-74
30
PLO = 0dBm
30
VCC = 4.75V, 5.0V, 5.25V
-76
-78
FOUR-CARRIER WCDMA
-80
-47
-37
-27
-17
-7
OUTPUT POWER PER CARRIER (dBm)
20
10
750
PLO = +3dBm
825 900 975 1050 1125 1200
LO FREQUENCY (MHz)
20
10
750
825 900 975 1050 1125 1200
LO FREQUENCY (MHz)
SIDEBAND SUPPRESSION
vs. LO FREQUENCY
70
OUTPUT IP3 vs. LO FREQUENCY
30
PLO = 0dBm, VCC = 5.0V
OUTPUT IP3 vs. LO FREQUENCY
30
TC = +25°C
60
TC = +85°C
TC = -40°C
25
50
TC = +25°C
VCC = 5.25V
25
40
30
TC = +25°C
20
TC = -40°C
20
TC = +85°C
15
20
VCC = 5.0V
15 VCC = 4.75V
10
750
825 900 975 1050 1125 1200
LO FREQUENCY (MHz)
10
750
825 900 975 1050 1125 1200
LO FREQUENCY (MHz)
10
750
825 900 975 1050 1125 1200
LO FREQUENCY (MHz)
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