Datasheet
MAX19995A
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
4 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Noise Figure with Blocker NF
B
P
BLOCKER
= +8dBm, f
RF
= 1850MHz,
f
LO
= 2200MHz, f
BLOCKER
= 1725MHz,
P
LO
= 0dBm, V
CC
= 5.0V, T
C
= +25°C
(Notes 10, 11)
19.7 23.4 dB
P
RF
= -10dBm 54 64
f
RF
= 1850MHz,
f
LO
= 2200MHz,
f
SPUR
= 2025MHz
P
RF
= -5dBm 49 59
P
RF
= -10dBm 57 64
2LO-2RF Spur Rejection
(Note 10)
2 x 2
f
RF
= 1850MHz,
f
LO
= 2200MHz,
f
SPUR
= 2025MHz,
P
LO
= 0dBm, V
CC
= 5.0V,
T
C
= +25°C
P
RF
= -5dBm 52 59
dBc
P
RF
= -10dBm 70 80
f
RF
= 1850MHz,
f
LO
= 2200MHz,
f
SPUR
= 2083.33MHz
P
RF
= -5dBm 60 70
P
RF
= -10dBm 71 80
3LO-3RF Spur Rejection
(Note 10)
3 x 3
f
RF
= 1850MHz,
f
LO
= 2200MHz,
f
SPUR
= 2083.33MHz,
P
LO
= 0dBm, V
CC
= 5.0V,
T
C
= +25°C
P
RF
= -5dBm 61 70
dBc
RF Input Return Loss
LO and IF terminated into matched
impedance, LO on
21 dB
LO port selected, RF and IF terminated into
matched impedance
20
LO Input Return Loss
LO port unselected, RF and IF terminated
into matched impedance
22
dB
IF Output Impedance Z
IF
Nominal differential impedance of the IF
outputs
200 Ω
IF Output Return Loss
RF terminated into 50Ω, LO driven by 50Ω
source, IF transformed to 50Ω using
external components shown in the Typical
Application Circuit
11.5 dB
RF-to-IF Isolation (Note 8) 31 35 dB
LO Leakage at RF Port (Note 8) -35 -25 dBm
2LO Leakage at RF Port (Note 8) -17.5 -14 dBm
LO Leakage at IF Port (Note 8) -32 -22 dBm
5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)
(
Typical Application Circuit
, R1 = R4 = 681Ω, R2 = R5 = 1.5kΩ, V
CC
= 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources,
P
LO
= -3dBm to +3dBm, P
RF
= -5dBm, f
RF
= 1700MHz to 2000MHz, f
LO
= 2050MHz to 2350MHz, f
IF
= 350MHz, f
RF
< f
LO
, T
C
= -40°C
to +85°C. Typical values are at V
CC
= 5.0V, P
RF
= -5dBm, P
LO
= 0dBm, f
RF
= 1850MHz, f
LO
= 2200MHz, f
IF
= 350MHz, T
C
= +25°C.
All parameters are guaranteed by design and characterization, unless otherwise noted.) (Note 6)