MH203A
Product Features
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+34 dBm Input IP3
7.3 dB Conversion Loss
RF: 800 – 960 MHz
LO: 1000 – 1310 MHz
IF:
70 – 350 MHz
+17 dBm Drive Level
Lead-free / RoHS-compliant /
Green SOIC-8 package
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No External Bias Required
The Communications Edge
TM
Product Information
High Linearity Cellular-Band MMIC Mixer
Product Description
The MH203A is a passive GaAs MESFET mixer that
provides high dynamic range performance in a low-cost
lead-free/green/RoHS-compliant SOIC-8 package. WJ’s
MH203A uses patented techniques to realize +34 dBm
Input IP3 at an LO drive level of +17 dBm and can be used
for upconverting or downconverting high-side LO
applications. This single monolithic integrated circuit does
not require any external baluns or bias elements.
Typical applications include frequency up/down
conversion, modulation and demodulation for receivers and
transmitters used in 2.5G and 3G GSM/CDMA/wCDMA
mobile infrastructure in the cellular frequency band.
Functional Diagram
MH203A
1
2
3
4
8
7
6
5
Applications
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2.5G and 3G GSM/CDMA/
wCDMA Mobile Infrastructure
Function
LO
IF & RF
*
GND
N/C or GND
Pin No.
2
7
1, 3, 4, 6, 8
5
* External components (inductors & capacitors) are
required to diplex the signal
Specifications
Parameters
RF Frequency Range
LO Frequency Range
IF Frequency Range
SSB Conversion Loss
Noise Figure
Input IP3
Input IP3
Input P1dB
2*LO – RF Isolation
LO – RF Isolation
LO – IF Isolation
RF – IF Isolation
Return Loss: RF Port
Return Loss: IF Port
Return Loss: LO Port
LO Drive Level
Units
MHz
MHz
MHz
dB
dB
dBm
dBm
dBm
dB
dB
dB
dB
dB
dB
dB
dBm
Min
Typ
800 – 960
1000 – 1310
70 – 350
7.3
7.8
+31.5
+34
+17.5
35
30
60
25
20
23
15
+17
Max
Comments
8.5
9.0
+28
+30
See note 1
See note 2
RF=900-960MHz, IF>300MHz, See note 3
All other RF/IF combinations, See notes 1 and 3
Referenced to the LO level at the RF port
25
50
10
10
10
See note 4
See note 4
LO=1064-1089MHz, See note 5
1. Test conditions unless otherwise noted: RF / IF = 803 / 200, 963 / 200, and 963 / 350 MHz with a high-side LO at +17 dBm in a downconverting application at 25 °C.
The diplexer shown on the application circuit is used in the test fixture.
2. Assumes LO injection noise is filtered at the thermal noise floor, -174 dBm/Hz, at the RF, IF, and Image frequencies.
3. IIP3 is measured with
Δf
= 1 MHz with RFin = 0 dBm / tone.
4. The return loss is measured after the diplexer which splits the RF and IF signals from the mixer.
5. The minimum LO port return loss is 9 dB for LO=1000-1064MHz and LO=1089-1310MHz.
Absolute Maximum Rating
Parameter
Operating Case Temperature
Storage Temperature
LO Power
Input IF / RF Power
-40 to +85
°C
-65 to +100 °C
+21 dBm
+20 dBm
Rating
Ordering Information
Part No.
MH203A-G
MH203A-PCB
Description
High Dynamic Range Cellular-band MMIC Mixer
(lead-free/green/RoHS-compliant SOIC-8 package)
Fully-Assembled Mixer 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 4 April 2006
WJCI [ WJ COMMUNICATION. INC. ]
