Datasheet
MAX19997A
Dual, SiGe High-Linearity, 1800MHz to 2900MHz
Downconversion Mixer with LO Buffer
7
Maxim Integrated
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
IF Output Impedance Z
IF
Nominal differential impedance at the IC’s
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
20 dB
RF-to-IF Isolation 23.5 dB
LO Leakage at RF Port (Notes 8, 9) -31 -24 dBm
2LO Leakage at RF Port -27 dBm
LO Leakage at IF Port -9.6 dBm
Channel Isolation
RFMAIN (RFDIV) converted power
measured at IFDIV (IFMAIN) relative to
IFMAIN (IFDIV), all unused ports terminated
to 50Ω (Notes 8, 9)
38.5 42 dB
+3.3V SUPPLY, LOW-SIDE LO INJECTION AC ELECTRICAL CHARACTERISTICS
(
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
Conversion Gain G
C
(Note 9) 8.5 dB
f
RF
= 2305MHz to 2360MHz 0.2
f
RF
= 2500MHz to 2570MHz 0.15
f
RF
= 2570MHz to 2620MHz 0.15
f
RF
= 2500MHz to 2690MHz 0.25
Conversion Gain Flatness
f
RF
= 2700MHz to 2900MHz 0.15
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
7.7 dBm
Thi r d - O r d er Inp ut Inter cep t P oi nt IIP3 f
RF1
- f
RF2
= 1MHz, P
RF
= -5dBm per tone 19.7 dBm
Third-Order Input Intercept
Variation Over Temperature
f
RF1
- f
RF2
= 1MHz, T
C
= -40°C to +85°C ±0.5 dBm
Noise Figure NF
SSB
Single sideband, no blockers present 9.7 dB
Noise Figure Temperature
Coefficient
TC
NF
Single sideband, no blockers present,
T
C
= -40°C to +85°C
0.018 dB/°C
+5.0V SUPPLY, LOW-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
= 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)