
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
AC ELECTRICAL CHARACTERISTICS (Modulator)
(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.) (Note 6)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
BASEBAND INPUT
Baseband Input Differential Impedance
f IQ = 1MHz
53
ā
BB Common-Mode Input Voltage
Range
-3.5
0
+3.5
V
LO INPUT
LO Input Return Loss
RF and IF terminated (Note 7)
12
dB
I/Q MIXER OUTPUTS
Output IP3
OIP3
f BB1 = 1.8MHz,
f BB2 = 1.9MHz
f LO = 900MHz
f LO = 1000MHz
21.1
22.3
dBm
Output IP2
OIP2
f BB1 = 1.8MHz, f BB2 = 1.9MHz
57.9
dBm
Output P1dB
Output Power
Output Power Variation Over
Temperature
Output-Power Flatness
ACLR (1st Adjacent Channel
5MHz Offset)
LO Leakage
P OUT
f BB = 25MHz, P LO = 0dBm
T C = -40°C to +85°C
Sweep f BB , P RF flatness for f BB from 1MHz
to 50MHz
Single-carrier WCDMA (Note 8)
No external calibration, with each
baseband input terminated in 50 ā
16.7
0.7
-0.016
0.15
65
-32
dBm
dBm
dB/°C
dB
dBc
dBm
Sideband Suppression
Output Noise Density
Output Noise Floor
RF Return Loss
No external calibration, P LO = 0dBm
f LO = 920MHz P LO = -3dBm
Each baseband input terminated in 50 ā
(Note 9)
P OUT = 0dBm, f LO = 900MHz (Note 10)
(Note 7)
30
39.6
43.5
-174
-168
15
dBc
dBm/Hz
dBm/Hz
dB
Maxim Integrated
3