Datasheet
MAX19996A
SiGe, High-Linearity, 2000MHz to 3900MHz
Downconversion Mixer with LO Buffer
_______________________________________________________________________________________ 9
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
P
RF
= -10dBm 90
3LO-3RF Spur Rejection 3 x 3 f
SPUR
= f
LO
- 100MHz
P
RF
= -5dBm 80
dBc
RF Input Return Loss RL
RF
LO on and IF terminated into a matched
impedance
22 dB
LO Input Return Loss RL
LO
RF and IF terminated into a matched
impedance
16.3 dB
IF Output Impedance Z
IF
Nominal differential impedance at the IC’s
IF outputs
200 Ω
f
IF
= 450MHz,
L1 = L2 =
120nH
25
f
IF
= 350MHz,
L1 = L2 =
270nH
25
IF Output Return Loss RL
IF
RF terminated into 50Ω, LO
driven by 50Ω source, IF
transformed to 50Ω using
external components
shown in the Typical
Application Circuit; see the
Typical Operating
Characteristics for
performance vs. inductor
values
f
IF
= 300MHz,
L1 = L2 =
390nH
25
dB
RF-to-IF Isolation f
RF
= 3100MHz to 3700MHz, P
LO
= +3dBm 26.6 dB
LO Leakage at RF Port f
LO
= 3400MHz to 4000MHz, P
LO
= +3dBm -38 dBm
2LO Leakage at RF Port f
LO
= 3400MHz to 4000MHz, P
LO
= +3dBm -13.5 dBm
LO Leakage at IF Port f
LO
= 3400MHz to 4000MHz, P
LO
= +3dBm -27 dBm
+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS—f
RF
= 3100MHz TO 3900MHz,
HIGH-SIDE LO INJECTION (continued)
(
Typical Application Circuit
with tuning elements outlined in Table 1, V
CC
= 4.75V to 5.25V, RF and LO ports are driven from 50Ω
sources, Typical values are for T
C
= +25°C, V
CC
= 5.0V, P
LO
= 0dBm, f
RF
= 3500MHz, f
LO
= 3800MHz, f
IF
= 300MHz. Parameters
are guaranteed by design and not production tested.) (Note 6)
Note 5: Not production tested. Operation outside this range is possible, but with degraded performance of some parameters. See
the
Typical Operating Characteristics
.
Note 6: All limits reflect losses of external components, including a 0.8dB loss at f
IF
= 300MHz due to the 4:1 impedance trans-
former. Output measurements were taken at IF outputs of the
Typical Application Circuit
.
Note 7: 100% production tested for functional performance.
Note 8: Measured with external LO source noise filtered so that 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
.
Note 9: Maximum reliable continuous input power applied to the RF port of this device is +12dBm from a 50Ω source.