High Dynamic Range FET Mixer
HMJ1
The Communications Edge
™
Product Information
Product Features
•
+39 dBm IIP3
•
No External Matching Elements
•
•
•
•
•
•
Product Description
The HMJ1 is a high dynamic range, GaAs
FET mixer. This active FET realizes a typi-
cal 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.
Functional Diagram
Required
RF 750-1000 MHz
LO 680-980 MHz
IF 20-100 MHz
+17 dBm Drive Level
+3V Bias (23 mA)
Low-Cost Surface Mount J-Lead
Package
Specifications
Parameter
Frequency Range:
RF
LO
IF
SSB Conversion Loss
Noise Figure
Isolation:
LO-RF
LO-IF
RF-IF
IIP3
Return Loss:
RF Port
LO Port
IF Port
Input P1dB
LO Drive Level
DC Current at +3V Bias
MHz
MHz
MHz
dB
dB
dB
dB
dB
dBm
dB
dB
dB
dBm
dBm
mA
750
680
20
7.7
9.2
20
30
33
29
40
24
39
8
13
19
23
17
23
1000
980
100
9.3
Units
Minimum
Typical
Maximum
Condition
RF = 900 MHz (0dBm)
35
Test conditions unless otherwise stated: RF = 900 MHz (-10 dBm), LO = 830 MHz (17 dBm), IF = 70 MHz and 25°C.
Absolute Maximum Ratings
Parameter
Operating Case Temperature
Storage Temperature
Maximum Input Power
Rating
-40 to +85°C
-55 to +125°C
25 dBm
Ordering Information
Part No.
HMJ1
HMJ1-PCB
Description
High Dynamic Range FET
(Available in tape and reel)z
Fully Assembled Application Circuit
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.
Specifications and information are subject to change without notice.
WJ Communications, Inc.
• Phone: 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com
February 2004
High Dynamic Range FET Mixer
HMJ1
The Communications Edge
™
Product Information
Performance Charts
50
IIP3 vs RF Frequency
5.0
7.5
10.0
Conversion Loss vs RF Frequency
IF = 20 MHz
Input Intercept Point (dBm)
45
IF = 100 MHz
IF = 70 MHz
Conversion Loss (dB)
IF = 100 MHz
IF = 70 MHz
40
35
30
800
IF = 20 MHz
12.5
15.0
850
900
950
RF Frequency (MHz)
1000
800
850
900
950
RF Frequency (MHz)
1000
Isolation vs LO Frequency
50
L-I
40
30
Isolation vs RF Frequency
Isolation (dB)
Isolation (dB)
30
L-R
20
10
0
700
740
780
820
860
900
LO Frequency (MHz)
940
980
20
R-I
10
0
800
850
900
950
RF Frequency (MHz)
1000
0
RF Return Loss vs RF Frequency
0
LO Return Loss vs LO Frequency
IF Return Loss (dB)
0
5
10
15
20
IF Return Loss vs IF Frequency
RF Return Loss (dB)
5
LO Return Loss (dB)
5
10
15
20
10
15
20
800
850
900
950
RF Frequency (MHz)
1000
700
740
780
820
860
900
940
980
25
20
40
LO Frequency (MHz)
60
80
IF Frequency (MHz)
100
Specifications and information are subject to change without notice.
WJ Communications, Inc.
• Phone: 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com
February 2004
High Dynamic Range FET Mixer
HMJ1
The Communications Edge
™
Product Information
Outline Drawing
Land Pattern
Mounting Configuration
Specifications and information are subject to change without notice.
WJ Communications, Inc.
• Phone: 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com
February 2004
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