Datasheet

MAX19995
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
_______________________________________________________________________________________ 7
+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)
( Typical Application Circuit . Typical values are at V
CC
= +3.3V, P
RF
= -5dBm, P
LO
= 0dBm, f
RF
= 1800MHz, f
LO
= 1610MHz,
f
IF
= 190MHz, T
C
= +25°C, unless otherwise noted.) (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 0.65dB loss at f
IF
= 190MHz due to the 4:1 impedance trans-
former. Output measurements were taken at IF outputs of the
Typical Application Circuit .
Note 7: Maximum reliable continuous input power applied to the RF or IF port of this device is +12dBm from a 50Ω source.
Note 8: Guaranteed by design and characterization.
Note 9: 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.
Note 10: Limited production testing.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Compression Point IP
1dB
(Note 7) 8.9 dBm
Input Intercept Point IIP3 f
RF1
- f
RF2
= 1MHz 18.5 dBm
Input Intercept Variation Over
Temperature
TC
IIP3
f
RF1
- f
RF2
= 1MHz, T
C
= -40°C to +85°C 0.0034 dBm/°C
Noise Figure NF
SSB
Single sideband, no blockers present 9.0 dB
Noise Figure Temperature
Coefficient
TC
NF
Single sideband, no blockers present,
T
C
= -40°C to +85°C
0.016 dB/°C
P
RF
= -10dBm 73
2RF-2LO Spur Rejection 2 x 2
P
RF
= -5dBm 68
dBc
P
RF
= -10dBm 70
3RF-3LO Spur Rejection 3 x 3
P
RF
= -5dBm 60
dBc
RF Input Return Loss LO on and IF terminated 21 dB
LO port selected, RF and IF terminated into
matched impedance
16
LO Input Return Loss
LO port unselected, RF and IF terminated
into matched impedance
20
dB
IF Return Loss
RF terminated into 50Ω, LO driven by 50Ω
source, IF transformed to 50Ω using
external components shown in Typical
Application Circuit, f
IF
= 190MHz
12.5 dB
RF-to-IF Isolation 42 dB
LO Leakage at RF Port -40 dBm
2LO Leakage at RF Port -29 dBm
LO Leakage at IF Port -43 dBm
RFMAIN converted power measured at
IFD_, relative to IFM_, all unused ports
terminated to 50Ω
49
Channel Isolation
RFDIV converted power measured at IFM_,
relative to IFD_, all unused ports terminated
to 50Ω
49
dB
LO-to-LO Isolation
P
LO1
= +3dBm, P
LO2
= +3dBm,
f
LO1
= 1610MHz, f
LO2
= 1611MHz
55 dB
LO Switching Time 50% of LO S E L to IF settl ed w i thi n 2 d eg r ees 50 ns