Datasheet
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MAX2042A
SiGe High-Linearity, 1600MHz to 3900MHz
Upconversion/Downconversion Mixer with LO Buffer
5.0V Supply, RF = 1650MHz to 2250MHz, LOW-SIDE LO INJECTION AC ELECTRICAL
CHARACTERISTICS (DOWNCONVERTER OPERATION)
(Typical Application Circuit with tuning elements outlined in Table 1. Typical values are for T
C
= +25NC, V
CC
= 5.0V, P
RF
= 0dBm,
P
LO
= 0dBm, f
RF
= 1850MHz, f
LO
= 1550MHz, f
IF
= 300MHz, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Small-Signal Conversion Loss L
C
8.5 dB
Loss Variation vs. Frequency
DL
C
f
RF
= 1650MHz to 1850MHz, any 100MHz band
Q0.35
dB
f
RF
= 1850MHz to 2250MHz, any 100MHz band
Q0.075
f
RF
= 1650MHz to 1850MHz, any 200MHz band
Q0.7
f
RF
= 1850MHz to 2250MHz, any 200MHz band
Q0.15
Conversion Loss
Temperature Coefficient
TC
CL
T
C
= -40NC to +85NC
0.0095
dB/NC
Single Sideband Noise
Figure
NF
SSB
No blockers present 8.95 dB
Noise Figure Temperature
Coefficient
TC
NF
Single sideband, no blockers present,
T
C
= -40NC to +85NC
0.024
dB/NC
Input 1dB Compression Point IP
1dB
(Note 10) 17.2 dBm
Third-Order Input Intercept
Point
IIP3
f
RF1
=
1850MHz, f
RF2
=
1851MHz,
P
RF1
= P
RF2
= 0dBm
26.7 dBm
IIP3 Variation with T
C
f
RF1
=
1850MHz, f
RF2
=
1851MHz,
P
RF1
= P
RF2
= 0dBm, T
C
= -40NC to +85NC
Q0.5
dB
2RF - 2LO Spur Rejection 2 x 2
f
RF
= 1850MHz,
f
LO
= 1550MHz,
f
SPUR
= 1700MHz
P
RF
= -10dBm 71
dBc
P
RF
= 0dBm 61
3RF - 3LO Spur Rejection 3 x 3
f
RF
= 1850MHz,
f
LO
= 1550MHz,
f
SPUR
= 1650MHz
P
RF
= -10dBm 83
dBc
P
RF
= 0dBm 63
RF Input Return Loss RL
RF
LO on and IF terminated into a matched
impedance
12.4 dB
LO Input Return Loss RL
LO
RF and IF terminated into a matched impedance 17.3 dB
IF Output Impedance Z
IF
Nominal differential impedance at the IC’s IF
outputs
50
I
IF Return Loss RL
IF
RF terminated into 50I, LO driven by 50I
source, IF transformed to single-ended 50I
using external components shown in the Typical
Application Circuit
19.3 dB
RF-to-IF Isolation P
LO
= +3dBm 44.6 dB
LO Leakage at RF Port P
LO
= +3dBm -29.5 dBm
2LO Leakage at RF Port P
LO
= +3dBm -29.5 dBm
LO Leakage at IF Port P
LO
= +3dBm -29.7 dBm