MH302
Product Features
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The Communications Edge
TM
Product Information
PCS/UMTS-band Quad-FET Mixer
Product Description
The MH302 is a passive Quad-MOSFET mixer that
provides high dynamic range performance in a low cost
3x3 mm 6-pin DFN (Dual Flat No-Lead) lead-
free/green/RoHS-compliant package.
WJ’s MH302 uses patented techniques to realize +27
dBm Input IP3 at an LO drive level of +13 dBm when
used in a simple application circuit with a low-side LO
configuration. The LO can also be driven with higher
power levels up +20 dBm to achieve higher IP3
performance. This mixer integrates internal circuitry to
provide single-ended interfaces for the RF & LO ports.
Typical applications include frequency up/down
conversion, modulation and demodulation for receivers
and transmitters used in 3G UMTS, PCS, and
DCS1800 mobile infrastructure.
Functional Diagram
IF1
1
6
IF2
+27 dBm Input IP3
RF 1800 – 2000 MHz
IF 200 – 300 MHz
Low-side LO configuration
+13 dBm LO Drive Level
High L-I & L-R Isolation (>30 dB)
Lead-free/green/RoHS-compliant
GND
2
5
GND
LO
3
MH302
4
RF
6-pin 3x3 mm DFN package
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No External Bias Required
Applications
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2.5G/3G GSM/CDMA/WCDMA
Function
IF Differential Input
LO port
RF port
IF differential Input
Ground
Pin No.
1
3
4
6
2, 5
Specifications
Parameters
RF Frequency Range
LO Frequency Range
IF Frequency Range
SSB Conversion Loss
Input IP3
Input IP3
Input IP3
Input 1 dB Compression Point
Noise Figure
LO Input Drive Level
LO-RF Isolation
LO-IF Isolation
Return Loss: RF Port
Return Loss: LO Port
Return Loss: IF Port
1.
2.
3.
4.
5.
Units
MHz
MHz
MHz
dB
dBm
dBm
dBm
dBm
dB
dBm
dB
dB
dB
dB
dB
Minimum
1800
1540
200
+23
+26
+23
+16
Typical
Maximum
2000
1740
300
8.0
Comments
28
29
260
7.5
+25
+27
+25
+18
8
+13
32
35
15
10
15
See note 2
See note 3
RF = 1.8 GHz, See note 4
RF = 1.9 GHz, See note 4
RF = 2.0 GHz, See note 4
See note 5
Data was taken using an application board in a 50
Ω
system, with a low side LO at +13 dBm in a downconverting application at 25 °C with an IF frequency = 260 MHz.
An IF frequency of 260 MHz is a nominal frequency. The IF frequency can be specified by the user within the constraints of the specified minimum and maximum RF & LO frequency range.
The conversion loss includes the loss of an IF transformer (M/A COM ETK4-2T, nominal loss 0.7 dB at 260 MHz).
Input IP3 is measured using two tones with an input power of +3 dBm / tone separated by 1 MHz.
Although the input P1dB level is much higher, the continuous RF input power should not exceed +12 dBm. Operation above +12 dBm may cause permanent damage.
Absolute Maximum Ratings
Parameters
Operating Case Temperature
Storage Temperature
LO Input Power
RF Input Power
-40 to +85
°C
-40 to +125 °C
+20 dBm
+12 dBm
Rating
Ordering Information
Part No.
MH302-G
MH302-PCB
Description
PCS/UMTS-band Quad-FET Mixer
(lead-free/green/RoHS-compliant Package)
Fully-Assembled MH302 Application Board
Specifications and information are subject to change without notice
Operation of this device above any of these parameters may cause permanent damage.
WJ Communications, Inc
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Phone 1-800-WJ1-4401
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FAX: 408-577-6621
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e-mail: sales@wj.com
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Web site: www.wj.com
Page 1 of 3 April 2006
WJCI [ WJ COMMUNICATION. INC. ]
