SPM-1045 Ver la hoja de datos (PDF) - Unspecified
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SPM-1045 Datasheet PDF : 8 Pages
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Preliminary Data Sheet
SPM-1045 High Linearity Mixer
Product Specifications: Up-converter
Test Conditions: FLO = 750MHz FIF = 100MHz Frf = 850MHz Plo = 17dBm
Parameters
Test Conditions
Unit
Min.
RF Output Frequency Range
MHz
500
LO Frequency
MHz
700
IF Input Frequency
MHz
50
RF Return Loss
Frf = 850 MHz
dB
LO Return Loss
Flo = 750 MHz
dB
IF Return Loss
Fif = 100 MHz
dB
Conversion Loss
TOI (Input)
Plo=10dBm
dBm
Plo=13dBm
dBm
Plo=17dBm
dBm
P1dB (input)
Plo=17dBm
dBm
LO Power
See graphs for performance vs. LO power
dBm
Typ.
7
12
10
7.5
25
32
32
20
Max.
1000
800
300
10
17
Absolute Maximum Ratings
Parameters
Value
Unit
RF Input
+15
dBm
LO Input
+20
dBm
IF Input
+15
dBm
Operating Temperature
-40 to +85
ºC
Storage Temperature
-65 to +150
ºC
Operation of this device beyond any one of these limits may
cause permanent damage. For reliable continuous operation the
device voltage and current must not exceed the maximum oper-
ating values specified in the table on page one.
Caution: ESD Sensitive
Appropriate precaution in handling, packaging
and testing devices must be observed.
The SPM-1045 mixer is a MOSFET based high performance mixer designed for high linearity frequency conversion in the
US cellular band. This mixer features a wide latitude in LO power requirements. Conversion loss remains virtually constant
between 10dBm and 17dBm of LO power. Third Order Intercept is approximately proportional to the LO drive. This means
that this mixer can be used to replace a wide variety of mixers requiring a variety of LO powers. The mixer uses baluns on
all three ports, so each port presents a DC short.
The graphs on the following pages illustrate the performance of the SPM-1045 over a variety of operating conditions. In
order to duplicate these performance tests, the following precautions should be observed:
-The mixer should be presented with good return losses at all ports by using isolators or attenuators. This is especially true
of the LO port, because of the poor return loss of this port. If ripple is seen in a frequency sweep, it is likely due to reflections
caused by poor VSWR in a cable leading up to the device.
-The presence of harmonics in the LO can cause changes in TOI.
-Be aware that signals of many different frequencies exist at the output of the mixer, and any one can potentially cause the
spectrum analyzer to generate intermod.
-When measuring TOI, make sure the two generators supplying the RF signal are not interacting, causing intermod them-
selves.
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
2
http://www.sirenza.com
EDS102960 Rev A
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