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Dual, SiGe, High-Linearity, 1200MHz to 1700MHz
Downconversion Mixer with LO Buffer/Switch
3.3V SUPPLY, LOW SIDE INJECTION AC ELECTRICAL CHARACTERISTICS (continued)
( Typical Application Circuit (see Table 1). R1 = R4 = 681 I , R2 = R5 = 1.43k I . 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 = +25 N C, unless otherwise noted.) (Note 7)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RF terminated into 50 I , LO driven by
IF Output Return Loss
50 I source, IF transformed to 50 I using
external components shown in the Typical
15
dB
Application Circuit
RF-to-IF Isolation
LO Leakage at RF Port
2LO Leakage at RF Port
LO Leakage at IF Port
Channel Isolation
RFMAIN converted power measured at
IFDIV relative to IFMAIN, all unused ports
terminated to 50 I
RFDIV converted power measured at
IFMAIN relative to IFDIV, all unused ports
terminated to 50 I
33
-45
-27
-22
47
47
dB
dBm
dBm
dBm
dB
LO-to-LO Isolation
LO Switching Time
P LO1 = +3dBm, P LO2 = +3dBm,
f LO1 = 1310MHz, f LO2 = 1311MHz
50% of LOSEL to IF settled within
2 degrees
57
50
dB
ns
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 50 I 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 .
6
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