Rainbow Electronics MAX19997A - Manual (Page 8)

MAX19997A
Dual, SiGe High-Linearity, 1800MHz to 2900MHz
Downconversion Mixer with LO Buffer
8 _______________________________________________________________________________________
+3.3V SUPPLY, LOW-SIDE LO INJECTION AC ELECTRICAL CHARACTERISTICS
(continued)
( Typical Application Circuit optimized for the standard RF band (see Table 1). Typical values are at V CC = +3.3V, P RF = -5dBm,
P LO = 0dBm, f RF = 2600MHz, f LO = 2250MHz, f IF = 350MHz, T C = +25°C, unless otherwise noted.) (Note 7)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
P RF = -10dBm, f SPUR = f LO + 175MHz 74
2RF-2LO Spur 2 x 2
P RF = -5dBm, f SPUR = f LO + 175MHz 69
dBc
P
RF
= -10dBm, f
SPUR
= f
LO
+ 116.67MHz 74
3RF-3LO Spur 3 x 3
P RF = -5dBm, f SPUR = f LO + 116.67MHz 64
dBc
RF Input Return Loss
LO on and IF terminated into a matched
impedance
16 dB
LO Input Return Loss
RF and IF terminated into a matched
impedance
11 dB
IF Output Impedance Z IF
Nominal differential impedance at the IC’s
IF outputs
200 Ω
IF Output Return Loss
RF terminated into 50 Ω, LO driven by 50Ω
source, IF transformed to 50 Ω using
external components shown in the Typical
Application Circuit
26 dB
RF-to-IF Isolation 25 dB
LO Leakage at RF Port -36 dBm
2LO Leakage at RF Port -31 dBm
LO Leakage at IF Port -13.5 dBm
Channel Isolation
RFMAIN (RFDIV) converted power
measured at IFDIV (IFMAIN) relative to
IFMAIN (IFDIV), all unused ports terminated
to 50
Ω
42 dB
Note 5: Operation outside this range is possible, but with degraded performance of some parameters. See the Typical Operating
Characteristics.
Note 6: Not production tested.
Note 7: All limits reflect losses of external components, including a 0.8dB loss at f IF = 350MHz due to the 4:1 impedance trans-
former. Output measurements taken at the IF outputs of Typical Application Circuit.
Note 8: Guaranteed by design and characterization.
Note 9: 100% production tested for functional performance.
Note 10: RF frequencies below 2400MHz require external RF tuning similar to components listed in Table 2.
Note 11: Maximum reliable continuous input power applied to the RF or IF port of this device is +12dBm from a 50
Ω source.
Note 12: 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.