MH303
Cellular-Band Quad-FET Mixer
Product Features
Applications
Specifications
1. Data was taken using an application board in a 50
2. An IF frequency of 70 MHz is a nominal frequency. The IF frequency can be specified by the user within the constraints of the specified minimum and maximum RF and LO frequency range.
3. The conversion loss includes the loss of an IF transformer (M/A COM ETC1-1-13, nominal loss 0.7 dB at 70 MHz).
4. Input IP3 is measured with two tones with an input power of +3 dBm / tone separated by 1 MHz.
5. 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
Operation of this device above any of these parameters may cause permanent damage.
WJ Communications, Inc
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
Parameters
Operating Case Temperature
Storage Temperature
LO Input Power
RF Input Power
RFID: UHF
+28 dBm IIP3
RF 820 – 920 MHz
IF 20 – 100 MHz
ISO & EPC compliant
Low-side LO configuration
+13 dBm LO Drive Level
High L-I & L-R Isolation (>38 dB)
6-pin 3x3 mm DFN
green/RoHS-compliant
No External Bias Required
Readers
Industrial
Portable
Handheld
Phone 1-800- WJ1-4401 FAX: 408-577-6621
lead-free/
Package
system, with a low side LO at +13 dBm in a downconverting application at 25°C with an IF frequency = 70 MHz.
Rating
-40° to +85 C
-40° to +125° C
+20 dBm
+12 dBm
Units
MHz
MHz
MHz
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
dB
dB
dB
dB
Product Description
The MH303 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 MH303 uses patented techniques to realize +28
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 various current and next
generation RFID technologies such as EPC, ISO, ETSI,
and ANSI. Their small size makes them ideal for
PCMCIA applications.
Minimum
e- mail: sales@wj.com
+26
+27
+26
820
720
20
35
40
Product Information
Ordering Information
Typical
Part No.
MH303
MH303-G
MH303-PCB
+17.5
Web site: www.wj.com
+27
+28
+27
+13
7.5
70
38
44
18
12
10
8
Maximum Comments
Description
Cellular-band Quad-FET Mixer
(lead-tin plated pins)
Cellular-band Quad-FET Mixer
(lead-free/green/RoHS-compliant Package)
Fully -Assembled MH303 Application Board
Specifications and infor mation are subject to change without notice
920
900
100
8.0
Functional Diagram
See note 2
See note 3
RF = 820 MHz, See note 4
RF = 870 MHz, See note 4
RF = 920 MHz, See note 4
See note 5
LO freq = 750 – 850 MHz
LO freq = 750 – 850 MHz
GND
IF1
IF Differential Input
LO
IF differential Input
Function
LO port
RF port
Ground
1
2
3
MH303
6
5
4
Pin No.
2, 5
October 2004
1
3
4
6
IF2
GND
RF