SiGe High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX9996 Typical Application Circuit , V CC = +4.75V to +5.25V, RF and LO ports are driven from 50 ? sources, P LO = -3dBm to
+3dBm, P RF = -5dBm, f RF = 1700MHz to 2200MHz, f LO = 1900MHz to 2400MHz, f IF = 200MHz, f LO > f RF , T C = -40°C to +85°C,
unless otherwise noted. Typical values are at V CC = +5V, P RF = -5dBm, P LO = 0dBm, f RF = 1900MHz, f LO = 2100MHz, f IF = 200MHz,
T C = +25°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER
Noise Figure
SYMBOL
NF
CONDITIONS
Single sideband
MIN
TYP
9.7
MAX
UNITS
dB
Noise Figure Under-Blocking
LO Drive
P RF = 5dBm, f RF = 2000MHz,
f LO = 2190MHz, f BLOCK = 2100MHz (Note 5)
-3
19
+3
dB
dBm
Spurious Response at IF
2x2
3x3
2LO-2RF
3LO-3RF
P RF = -10dBm
P RF = -5dBm
P RF = -10dBm
P RF = -5dBm
72
67
87
77
dBc
LO1 to LO2 Isolation
Maximum LO Leakage at RF Port
Maximum LO Leakage at IF Port
Minimum RF-to-IF Isolation
LO Switching Time
RF Port Return Loss
LO2 selected, 1900MHz < f LO < 2100MHz
LO1 selected, 1900MHz < f LO < 2100MHz
P LO = +3dBm
P LO = +3dBm
50% of LOSEL to IF settled to within 2 °
49
43
-20
-30
40
50
15
dB
dBm
dBm
dB
ns
dB
LO Port Return Loss
LO1/2 port selected,
LO2/1 and IF terminated
LO1/2 port unselected,
LO2/1 and IF terminated
16
26
dB
IF Port Return Loss
LO driven at 0dBm, RF terminated into 50 ? ,
differential 200 ?
20
dB
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Guaranteed by design and characterization.
All limits include external component losses. Output measurements taken at IF output of the Typical Application Circuit .
Operation outside this range is possible, but with degraded performance of some parameters.
Compression point characterized. It is advisable not to operate continuously the mixer RF input above +12dBm.
Measured with external LO source noise filtered so the noise floor is -174dBm/Hz. This specification reflects the effects of all
SNR degradations in the mixer, including the LO noise as defined in Maxim Application Note 2021.
_______________________________________________________________________________________
3
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