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MAX2022
High-Dynamic-Range, Direct Up/
Downconversion 1500MHz to 3000MHz
Quadrature Modulator/Demodulator
AC Electrical Characteristics (Demodulator, f LO = 2855MHz)
(MAX2022 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 50? sources. Typical values are for V CC = 5V, I/Q
DC returns = 160? resistors to GND, P RF = 0dBm, P LO = 0dBm, f RF = 2655MHz, f LO = 2855MHz, f IF = 200MHz, T C = +25°C, unless
otherwise noted.) (Notes 6, 11)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Conversion Loss
Noise Figure
L C
NF SSB
11.2
11.4
dB
dB
Input Third-Order Intercept Point
Input Second-Order Intercept
Point
LO Leakage at RF Port
IIP3
IIP2
f RF1 = 2655MHz, f RF2 = 2656.2MHz,
P RF1 = P RF2 = 0dBm, f IF1 = 200MHz,
f IF2 = 198.8MHz
f RF1 = 2655MHz, f RF2 = 2656.2MHz,
P RF1 = P RF2 = 0dBm, f IF1 = 200MHz,
f IF2 = 198.8MHz, f IM2nd = 398.8MHz
34.5
60
-31.3
dBm
dBm
dBm
I+
-25.2
LO Leakage at IF Port
Gain Compression
I/Q Gain Mismatch
I/Q Phase Mismatch
RF Port Return Loss
LO Port Return Loss
IF Port Differential Impedance
Minimum Demodulation 3dB
Bandwidth
Minimum 1dB Gain Flatness
I-
Q+
Q-
P RF = 20dBm
C9 = 22pF, L1 = 4.7nH, C14 = 0.7pF
C3 = 6.8pF
-23.5
-26
-22.3
0.10
0.3
0.5
22.5
14.2
43
>500
>450
dBm
dB
dB
deg
dB
dB
?
MHz
MHz
Note 5: Recommended functional range, not production tested. Operation outside this range is possible, but with degraded perfor-
mance of some parameters.
Note 6: All limits include external component losses of components, PCB, and connectors.
Note 7: It is advisable not to operate the I and Q inputs continuously above 2.5V P-P differential.
Note 8: Guaranteed by design and characterization.
Note 9: Single-carrier WCDMA peak-to-average ratio of 10.5dB for 0.1% complementary cumulative distribution function.
Note 10: No baseband drive input. Measured with the baseband inputs terminated in 50Ω to GND. At low-output power levels, the
output noise density is equal to the thermal noise floor.
Note 11: It is advisable not to operate the RF input continuously above +17dBm.
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