SiGe High-Linearity, 1400MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
AC ELECTRICAL CHARACTERISTICS—f RF = 1700MHz TO 2200MHz, LOW-SIDE LO INJECTION
(Typical Application Circuit, V CC = +4.75V to +5.25V, RF and LO ports are driven from 50 ? sources, P LO = -3dBm to +3dBm,
P RF = -5dBm, f RF = 1700MHz to 2200MHz, f LO = 1400MHz to 2000MHz, f IF = 200MHz, f RF > f LO , T C = -40°C to +85°C, unless other-
wise noted. Typical values are at V CC = +5V, P RF = -5dBm, P LO = 0dBm, f RF = 1900MHz, f LO = 1700MHz, f IF = 200MHz,
T C = +25°C, unless otherwise noted.) (Notes 4, 5)
PARAMETER
Conversion Gain
SYMBOL
G C
CONDITIONS
P RF < +2dBm, T A = +25 ° C (Note 6)
MIN
7.2
TYP
8.3
MAX
9.2
UNITS
dB
Gain Variation Over Temperature
T C = -40 ° C to +85 ° C
± 0.75
dB
Input Compression Point
P 1dB
(Note 7)
12.6
dBm
Two tones:
Input Third-Order Intercept Point
(Note 6)
Input IP3 Variation Over
Temperature
Noise Figure
IIP3
NF
f RF1 = 2000MHz, f RF2 = 2001MHz,
P RF = -5dBm/tone, f LO = 1800MHz,
P LO = 0dBm, T A = +25 ° C
T C = -40 ° C to +85 ° C
Single sideband
23.5
26.2
± 0.5
9.7
dBm
dB
dB
Noise Figure Under-Blocking
LO Drive
P RF = 5dBm, f RF = 2000MHz,
f LO = 1810MHz, f block = 2100MHz (Note 8)
-3
19
+3
dB
dBm
Spurious Response at IF
2x2
3x3
2RF - 2LO
3RF - 3LO
P RF = -10dBm
P RF = -5dBm
P RF = -10dBm
P RF = -5dBm
67
62
82
72
dBc
LO1 to LO2 Isolation
(Note 4)
Maximum LO Leakage at RF
Port
Maximum LO Leakage at IF Port
Minimum RF-to-IF Isolation
LO Switching Time
RF Port Return Loss
LO Port Return Loss
LO2 selected,
1500MHz < f LO < 1700MHz
LO1 selected,
1500MHz < f LO < 1700MHz
P LO = +3dBm
P LO = +3dBm
50% of LOSEL to IF settled to within 2 °
LO1/2 port selected,
LO2/1 and IF terminated
40
40
52
45
-17
-30
35
50
21
16
dB
dBm
dBm
dB
ns
dB
dB
LO1/2 port unselected,
LO2/1 and IF terminated
26
IF Port Return Loss
LO driven at 0dBm, RF terminated into
50 , differential 200
20
dB
_______________________________________________________________________________________
3
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