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MH203 Datasheet(PDF) 1 Page - WJ Communication. Inc.

Part # MH203
Description  High Linearity Cellular-Band MMIC Mixer
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Manufacturer  WJCI [WJ Communication. Inc.]
Direct Link  http://www.wj.com
Logo WJCI - WJ Communication. Inc.

MH203 Datasheet(HTML) 1 Page - WJ Communication. Inc.

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Specifications and information are subject to change without notice
WJ Communications, Inc
• Phone 1-800- WJ1-4401 • FAX: 408-577-6621 • e- mail: sales@wj.com • Web site: www.wj.com
February 2004
MH203
High Linearity Cellular-Band MMIC Mixer
Product Information
Product Features
+32 dBm IIP3
RF
800 – 960 MHz
IF
200 – 350 MHz
ISO & EPC compliant
High-side LO configuration
+17 dBm Drive Level
Low Cost SOIC-8 Package
No External Bias Required
Applications
RFID: UHF
Readers
Industrial
Portable
Handheld
Product Description
The MH203 is a passive GaAs MESFET mixer that
provides high dynamic range performance in a low
cost SOIC-8 package.
Its robustness and ease of use
make it an ideal candidate for the core of any RFID reader
application. It is compliant with EPC and ISO standards.
WJ’s MH203 uses patented techniques to realize +32
dBm Input IP3 at an LO drive level of +17 dBm
when used in a simple application circuit as an
upconverting
or
downconverting
high-side
LO
configuration.
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 various current and
next generation RFID technologies such as EPC, ISO,
ETSI, and ANSI. Their small size makes them ideal for
PCMCIA applications.
Functional Diagram
1
2
3
4
8
7
6
5
Function
Pin No.
LO
2
IF & RF
*
7
GND
1, 3, 4, 5, 6, 8
* External components (inductors &
capacitors) are required to diplex the signal
Specifications
1
Parameters
Units
Min
Typ
Max
Comments
RF Frequency Range
MHz
800
960
LO Frequency Range
MHz
1000
1310
IF Frequency Range
MHz
200
350
SSB Conversion Loss
dB
8.2
9.5
Noise Figure
dB
8.7
See note 2
Input IP3
dBm
+28
+32
See note 3
Input P1dB
dBm
+17.5
LO – RF Isolation
dB
25
30
LO – IF Isolation
dB
50
65
RF – IF Isolation
dB
25
Return Loss: RF Port
dB
20
See note 4
Return Loss: IF Port
dB
17
See note 4
Return Loss: LO Port
dB
12
LO Drive Level
dBm
+17
Test conditions unless otherwise noted:
1. Performance is with the use of an application specific circuit (shown on page 4) with a high-side LO at +17 dBm in a downconverting application at 25° C.
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
∆f = 1 MHz with RF
in = 0 dBm / tone.
4. The return loss is measured after the diplexer which splits the RF and IF signals from the mixer. Details of the diplexing circuit is shown on page 4.
Absolute Maximum Rating
Ordering Information
Parameter
Rating
Part No.
Description
Operating Case Temperature
-40° to +85
°C
MH203
Cellular-band MMIC Mixer
Storage Temperature
-65° to +100 °C
MH203-PCB
Fully -Assembled Mixer Application Board
Maximum Input LO Power
6
+21 dBm
5. Operation of this device above any of these parameters may cause permanent damage.
6. Total sum of the LO and RF port power should not exceed +23 dBm .


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