Datasheet

MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
3
Maxim Integrated
AC ELECTRICAL CHARACTERISTICS (Modulator)
(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.) (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
f
LO
= 900MHz 21.1
Output IP3 OIP3
f
BB1
= 1.8MHz,
f
BB2
= 1.9MHz
f
LO
= 1000MHz 22.3
dBm
Output IP2 OIP2 f
BB1
= 1.8MHz, f
BB2
= 1.9MHz 57.9 dBm
Output P1dB f
BB
= 25MHz, P
LO
= 0dBm 16.7 dBm
Output Power P
OUT
0.7 dBm
Output Power Variation Over
Temperature
T
C
= -40°C to +85°C -0.016 dB/°C
Output-Power Flatness
Sweep f
BB
, P
RF
flatness for f
BB
from 1MHz
to 50MHz
0.15 dB
ACLR (1st Adjacent Channel
5MHz Offset)
Single-carrier WCDMA (Note 8) 65 dBc
LO Leakage
No external calibration, with each
baseband input terminated in 50Ā
-32 dBm
P
LO
= 0dBm 30 39.6
Sideband Suppression
No external calibration,
f
LO
= 920MHz
P
LO
= -3dBm 43.5
dBc
Output Noise Density
Each baseband input terminated in 50Ā
(Note 9)
-174 dBm/Hz
Output Noise Floor P
OUT
= 0dBm, f
LO
= 900MHz (Note 10) -168 dBm/Hz
RF Return Loss (Note 7) 15 dB