Datasheet
MAX2021
High-Dynamic-Range, Direct Up-/Downconversion
650MHz to 1200MHz Quadrature Mod/Demod
4
Maxim Integrated
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
RF INPUT
Conversion Loss L
C
f
BB
= 25MHz (Note 11) 9.2 dB
Noise Figure NF f
LO
= 900MHz 9.3 dB
Noise Figure Under-Blocking
NF
BLOCK
f
BLOCKER
= 900MHz, P
RF
= 11dBm,
f
RF
= f
LO
= 890MHz (Note 12)
17.8
dB
Input Third-Order Intercept IIP3
f
RF1
= 925MHz, f
RF2
= 926MHz, f
LO
=
900MHz, P
RF
= P
LO
= 0dBm, f
SPUR
= 24MHz
35.2
dBm
Input Second-Order Intercept
IIP2
f
RF1
= 925MHz, f
RF2
= 926MHz, f
LO
=
900MHz, P
RF
= P
LO
= 0dBm, f
SPUR
= 51MHz
76
dBm
Input 1dB Compression P
1dB
f
IF
= 50MHz, f
LO
= 900MHz, P
LO
= 0dBm 30
dBm
I/Q Gain Mismatch f
BB
= 1MHz, f
LO
= 900MHz, P
LO
= 0dBm
0.06
dB
P
LO
= 0dBm 1.1
I/Q Phase Mismatch
f
BB
= 1MHz,
f
LO
= 900MHz
P
LO
= -3dBm
0.15
Degrees
Minimum Demodulation 3dB
Bandwidth
LO = 1160MHz LO > RF
> 550
MHz
Minimum 1dB Gain Flatness LO = 1160MHz LO > RF
> 450
MHz
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Conversion Loss Lc
10.1
dB
Noise Figure NF
SSB
10.4
dB
Noise Figure Under Blocking
NF
BLOCK
f
BLOCKER
= 700MHz, P
BLOCKER
= 11dBm,
f
LO
= 965MHz, f
RF
= 865MHz, (Note 12)
19 dB
f
RF1
= 780MHz, f
RF2
= 781MHz,
P
RF1
= P
RF2
= 0dBm, f
IF1
= 185MHz,
f
IF2
= 184MHz
34.5
Input Third-Order Intercept
Point
IIP3
f
RF1
= 780MHz, f
RF2
= 735MHz,
P
RF1
= P
RF2
= 0dBm, f
IF1
= 185MHz,
f
IF2
= 230MHz
34.6
dBm
AC ELECTRICAL CHARACTERISTICS (Demodulator)
(MAX2021
Typical Application Circuit
when operated as a demodulator, V
CC
= 4.75V to 5.25V, GND = 0V, I/Q outputs are recombined
using network shown in Figure 5. Losses of combining network not included in measurements. V
DC
for BBI+. BBI-, BBQ+, BBQ- = 0V,
P
RF
= 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, T
C
= +25°C, unless otherwise noted.) (Note 6)
AC ELECTRICAL CHARACTERISTICS (Demodulator LO = 965MHz)
(
Typical Application Circuit
when operated as a demodulator. I/Q outputs are recombined using network shown in Figure 5. Losses of
combining network not included in measurements. RF and LO ports are driven from 50Ω sources. Typical values are for T
A
= +25°C,
V
CC
= 5.0V, I/Q DC voltage return = 0V, P
RF
= 0dBm, P
LO
= 0dBm, f
RF
= 780MHz, f
LO
= 965MHz, f
IF
= 185MHz, unless otherwise noted.)