400MHz to 2.5GHz, Low-Noise,
SiGe Downconverter Mixers
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2680/1/2 EV Kit, V CC = SHDN = +3.0V, T A = +25°C, unless otherwise noted. RFIN and IFOUT matched to 50 ? . P LO = -5dBm,
P RFIN = -25dBm.)
PARAMETER
LO Leakage at RFIN Port
IF/2 Spurious Response
CONDITIONS
f LO = 1880MHz
f RF = 1915MHz, f LO = 1880MHz, f IF = 70MHz (Note 4)
MIN
TYP
-26
-51
MAX
UNITS
dBm
dBm
MAX2681
RF Frequency Range
LO Frequency Range
IF Frequency Range
(Notes 1, 2)
(Notes 1, 2)
(Notes 1, 2)
400
400
10
2500
2500
500
MHz
MHz
MHz
f RF = 400MHz, f LO = 445MHz, f IF = 45MHz
11.0
Conversion Power Gain
f RF = 900MHz, f LO = 970MHz, f IF = 70MHz
f RF = 1950MHz, f LO = 1880MHz, f IF = 70MHz (Note 1)
6.7
14.2
8.4
9.4
dB
f RF = 2450MHz, f LO = 2210MHz, f IF = 240MHz
7.7
Gain Variation Over Temperature
Input Third-Order Intercept Point
(Note 3)
f RF = 1950MHz, f LO = 1880MHz, f IF = 70MHz,
T A = T MIN to T MAX (Note 1)
f RF = 900MHz, 901MHz, f LO = 970MHz, f IF = 70MHz
f RF = 1950MHz, 1951MHz, f LO = 1880MHz, f IF = 70MHz
f RF = 2450MHz, 2451MHz, f LO = 2210MHz, f IF = 240MHz
1.7
-6.1
+0.5
+1.0
2.3
dB
dBm
f RF = 900MHz, f LO = 970MHz, f IF = 70MHz
7.0
Noise Figure (Single Sideband)
LO Input VSWR
LO Leakage at IFOUT Port
LO Leakage at RFIN Port
IF/2 Spurious Response
f RF = 1950MHz, f LO = 2020MHz, f IF = 70MHz
f RF = 2450MHz, f LO = 2210MHz, f IF = 240MHz
50 ? source impedance
f LO = 1880MHz
f LO = 1880MHz
f RF = 1915MHz, f LO = 1880MHz, f IF = 70MHz (Note 4)
11.1
12.7
1.5:1
-23
-27
-65
dB
dBm
dBm
dBm
MAX2682
RF Frequency Range
LO Frequency Range
IF Frequency Range
(Notes 1, 2)
(Notes 1, 2)
(Notes 1, 2)
400
400
10
2500
2500
500
MHz
MHz
MHz
f RF = 400MHz, f LO = 445MHz, f IF = 45MHz
13.4
Conversion Power Gain
f RF = 900MHz, f LO = 970MHz, f IF = 70MHz
f RF = 1950MHz, f LO = 1880MHz, f IF = 70MHz (Note 1)
8.7
14.7
10.4
11.7
dB
f RF = 2450MHz, f LO = 2210MHz, f IF = 240MHz
7.9
Gain Variation Over Temperature
Input Third-Order Intercept Point
(Note 3)
f RF = 1950MHz, f LO = 1880MHz, f IF = 70MHz,
T A = T MIN to T MAX (Note 1)
f RF = 900MHz, 901MHz, f LO = 970MHz, f IF = 70MHz
f RF = 1950MHz, 1951MHz, f LO = 1880MHz, f IF = 70MHz
f RF = 2450MHz, 2451MHz, f LO = 2210MHz, f IF = 240MHz
2.1
-1.8
+4.4
+3.2
3.2
dB
dBm
f RF = 900MHz, f LO = 970MHz, f IF = 70MHz
6.5
Noise Figure (Single Sideband)
f RF = 1950MHz, f LO = 2020MHz, f IF = 70MHz
f RF = 2450MHz, f LO = 2210MHz, f IF = 240MHz
10.2
13.4
dB
_______________________________________________________________________________________
3
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