Datasheet
MAX19997A
Dual, SiGe High-Linearity, 1800MHz to 2900MHz
Downconversion Mixer with LO Buffer
5
Maxim Integrated
+5.0V SUPPLY, HIGH-SIDE LO INJECTION AC ELECTRICAL CHARACTERISTICS
(continued)
(
Typical Application Circuit
optimized for the standard RF band (see Table 1),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
= 2300MHz to 2900MHz, f
LO
= 2650MHz to 3250MHz, 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
= 2600MHz, f
LO
= 2950MHz,
f
IF
= 350MHz, T
C
= +25°C, unless otherwise noted.) (Note 7)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LO Input Return Loss
RF and IF terminated into a matched
impedance
13 dB
IF Output Impedance Z
IF
Nominal differential impedance at the IC’s
IF outputs
200
IF Output Return Loss
RF terminated into 50, LO driven by 50
source, IF transformed to 50 using
external components shown in the Typical
Application Circuit
21 dB
25
RF-to-IF Isolation
T
C
= +100°C 24
dB
LO Leakage at RF Port (Notes 8, 9) -28 dBm
2LO Leakage at RF Port -33 dBm
-18.5
LO Leakage at IF Port
T
C
= +100°C -17.8
dBm
38.5 43
Channel Isolation
RFMAIN (RFDIV) converted
power measured at IFDIV
(IFMAIN) relative to IFMAIN
(IFDIV), all unused ports
terminated to 50
T
C
= +100°C 43.4
dB
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Conversion Gain G
C
f
RF
= 2400MHz to 2900MHz,
T
C
= +25°C (Notes 8, 9, 10)
8.1 8.7 9.3 dB
f
RF
= 2305MHz to 2360MHz 0.2
f
RF
= 2500MHz to 2570MHz 0.15
f
RF
= 2570MHz to 2620MHz 0.2
f
RF
= 2500MHz to 2690MHz 0.25
Conversion Gain Flatness
f
RF
= 2700MHz to 2900MHz 0.25
dB
Gain Variation Over Temperature TC
CG
f
RF
= 2300MHz to 2900MHz, T
C
= -40°C to
+85°C
-0.01 dB/°C
Input Compression Point IP
1dB
(Notes 6, 8, 11) 9.6 11.3 dBm
+5.0V SUPPLY, LOW-SIDE LO INJECTION AC ELECTRICAL CHARACTERISTICS
(
Typical Application Circuit
optimized for the standard RF band (see Table 1), 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
= 2300MHz to 2900MHz, f
LO
= 1950MHz to 2550MHz, 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
= 2600MHz, f
LO
= 2250MHz,
f
IF
= 350MHz, T
C
= +25°C, unless otherwise noted.) (Note 7)