Rainbow Electronics MAX19993 User Manual
Page 6
MAX19993
Dual, SiGe, High-Linearity, 1200MHz to 1700MHz
Downconversion Mixer with LO Buffer/Switch
6
Note_5: 100% production tested for functionality.
Note_6: Not production tested. Operation outside this range is possible, but with degraded performance of some parameters. See
the Typical Operating Characteristics section.
Note_7: All limits reflect losses of external components, including a 0.5dB loss at f
IF
= 140MHz due to the 4:1 transformer. Output
measurements were taken at IF outputs of the Typical Application Circuit.
Note_8: Maximum reliable continuous input power applied to the RF or IF port of this device is +12dBm from a 50I source.
Note_9: Not production tested.
Note_10: 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 Application Note 2021: Specifications and
Measurement of Local Oscillator Noise in Integrated Circuit Base Station Mixers.
3.3V_SUPPLY,_LOW_SIDE_INJECTION_AC_ELECTRICAL_CHARACTERISTICS_(continued)
(Typical Application Circuit (see Table 1). R1 = R4 = 681I, R2 = R5 = 1.43kI. Typical values are at V
CC
= 3.3V, P
RF
= -5dBm, P
LO
= 0dBm,
f
RF
= 1450MHz, f
LO
= 1310MHz, f
IF
= 140MHz, T
C
= +25NC, unless otherwise noted.) (Note 7)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
IF Output Return Loss
RF terminated into 50I, LO driven by
50I source, IF transformed to 50I using
external components shown in the Typical
Application Circuit
15
dB
RF-to-IF Isolation
33
dB
LO Leakage at RF Port
-45
dBm
2LO Leakage at RF Port
-27
dBm
LO Leakage at IF Port
-22
dBm
Channel Isolation
RFMAIN converted power measured at
IFDIV relative to IFMAIN, all unused ports
terminated to 50I
47
dB
RFDIV converted power measured at
IFMAIN relative to IFDIV, all unused ports
terminated to 50I
47
LO-to-LO Isolation
P
LO1
= +3dBm, P
LO2
= +3dBm,
f
LO1
= 1310MHz, f
LO2
= 1311MHz
57
dB
LO Switching Time
50% of LOSEL to IF settled within
2 degrees
50
ns