WJ Company HMJ1 Datasheet
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:408-433-5649 • e-mail:sales@wj.com • Web site: www.wj.com
September 2000
HMJ1
Product Description
The HMJ1 is a high dynamic range, GaAs FET
mixer. This active FET mixer realizes a typical
third order intercept point of +39 dBm at an
LO drive level of +17 dBm. The HMJ1 comes
in a low cost, J-lead package. Typical applications include frequency up/down conversion,
modulation and demodulation for receivers and
transmitters used in cellular communications
systems.
Product Features
•
+39 dBm IIP3
•
No External Matching Elements
Required
•
RF 800-1000 MHz
•
LO 700-980 MHz
•
IF 20-100 MHz
•
+17 dBm Drive Level
•
+3V Bias (23 mA)
•
Low Cost Surface Mount J-Lead
Package
Functional Diagram
Absolute Maximum Ratings
Parameter Rating
Operating Case Temperature -40 to +85°C
Storage Temperature -65 to +100°C
Maximum Input Power 25 dBm
1. Operation of this device above any of these parameters may cause permanent damage.
2.Total sum of LO port and RF port power should not exceed 25 dBm.
Ordering Information
Part No. Description
HMJ1 High Dynamic Range FET Mixer
(Available in tape and reel)
HMJ1-PCB Fully Assembled Application Circuit
High Dynamic Range FET Mixer
Specifications
Parameter Units Minimum Typical Maximum Condition
Frequency Range:
RF MHz 800 1000
LO MHz 700 980
IF MHz 20 100
SSB Conversion Loss dB 7.7 9.3
Noise Figure dB 9.2
Isolation:
LO-RF dB 20 29
LO-IF dB 30 40
RF-IF dB 24
IIP3 dBm 33 39 RF = 900 MHz (0dBm)
Return Loss:
RF Port dB 8.0
LO Port dB 13
IF Port dB 19
Input P1dB dBm 23
LO Drive Level dBm 17
DC Current at +3V Bias mA 23 35
Test conditions unless otherwise stated: RF = 900 MHz (-10 dBm), LO = 830 MHz (17 dBm), IF = 70 MHz and 25˚C.
The Communications Edge
™
18 17 16 15 14 13 12 11 10
123456789
Function Pin No.
Ground 1
IF 2
Ground 3-7
+3V DC 8
Ground 9
Function Pin No.
Ground 10
LO 11
Ground 12-16
RF 17
Ground 18
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:408-433-5649 • e-mail: sales@wj.com • Web site: www.wj.com
September 2000
Input Intercept Point (dBm)
RF Frequency (MHz)
800 850 900 1000950
Conversion Loss vs. RF Frequency IIP3 vs. RF Frequency
Conversion Loss (dB)
RF Frequency (MHz)
800 850 900 950 1000
50
45
40
35
30
5.0
7.5
10.0
12.5
15.0
IF = 70 MHz
RF Return Loss (dBm)
RF Frequency (MHz)
800 850 900 1000950
RF Return Loss vs. RF Frequency
0
20
10
15
5
IF Frequency (MHz)
IF Return Loss vs. IF Frequency
IF Return Loss (dB)
20 40 60 80 100
0
25
20
15
10
5
LO Frequency (MHz)
LO Return Loss vs. LO Frequency
LO Return Loss (dB)
700 740 780 820 860 900 940 980
0
20
15
10
5
Isolation vs. LO Frequency
LO Frequency (MHz)
700 740 780 820 900 940860 980
Isolation (dB)
50
40
30
20
10
0
L-I
L-R
Isolation vs. RF Frequency
RF Frequency (MHz)
800 850 900 950 1000
Isolation (dB)
30
20
10
0
R-I
IF = 100 MHz
IF = 70 MHz
IF = 20 MHz
IF = 100 MHz
IF = 20 MHz
HMJ1
Performance Charts
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