High Dynamic Range FET Mixer
HMJ7
The Communications Edge
™
Product Features
•
+34 dBm IIP3
•
60 dBc Spurious Rejection in IF
•
•
•
•
•
•
Product Description
The HMJ7 is a high dynamic range, GaAs FET
mixer. This active broadband mixer realizes a
typical third order intercept point of +34 dBm
at an LO drive level of +21 dBm. The HMJ7
also provides excellent suppression of spurious
intermodulation products, greater than 60 dBc.
The HMJ7 comes in a low cost, J-Lead pack-
age. The combination of high dynamic range
and spurious suppression, makes the HMJ7 an
ideal choice for CATV headend transmission
equipment and other applications requiring a
broadband mixer in the 1000 MHz to 2000
MHz frequency range.
Functional Diagram
22 21 2019 18171615 1413 12
Band
RF 1000-2000 MHz
LO 1000-2000 MHz
IF 10-1000 MHz
+21 dBm LO Drive Level
+5V Bias (40 mA)
Low Cost Surface Mount J-Lead
Package
1 2 3 4 5 6 7 8 9 10 11
Function Pin No. Function Pin No.
Ground
1
Ground
12
IF
2
LO
13
Ground
3-9
Ground 14-20
+5V DC
10
RF
21
Ground
11
Ground
22
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
Spurious Rejection
Input P1dB
LO Drive Level
DC Current at +5V Bias
Units
MHz
MHz
MHz
dB
dB
dB
dB
dB
dBm
dB
dB
dB
dBc
dBm
dBm
mA
Minimum
1000
1000
10
8.5
10.5
21
24
30
24
30
24
34
10
5
14
60
23
21
40
Typical
Maximum
2000
2000
1000
9.5
Condition
RF = 1018 MHz (0dBm)
60
Test conditions unless otherwise stated: RF = 1018 MHz (-10 dBm), LO = 1017 MHz (21 dBm), IF = 50-860 MHz and 25˚C.
Absolute Maximum Ratings
Parameter
Operating Case Temperature
Storage Temperature
Maximum Input Power
Rating
-40 to +85°C
-65 to +100°C
25 dBm
Ordering Information
Part No.
HMJ7
HMJ7-PCB
Description
High Dynamic Range FET Mixer
(Available in tape and reel)
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.
WJ Communications, Inc.
• Phone: 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com
June 2002
HMJ7
Performance Charts
IIP3 vs. RF Frequency
45
Input Intercept Point (dBm)
Conversion Loss vs. RF Frequency
5
IF = 500 MHz
Conversion Loss (dB)
40
IF = 500 MHz
35
IF = 10 MHz
30
7.5
IF = 10 MHz
10
12.5
25
1100
1250
1400
1550
1700
RF Frequency (MHz)
1850
2000
15
800
1000
1200
1400
1600
1800
RF Frequency (MHz)
2000
2200
Isolation vs. LO Frequency
50
40
Isolation (dB)
30
20
10
0
800
1000
1200
1400
1600
1800
LO Frequency (MHz)
2000
2200
L-R
Isolation (dB)
L-I
40
Isolation vs. RF Frequency
30
R-I
20
10
0
1000
1200
1400
1600
RF Frequency (MHz)
1800
2000
RF Return Loss vs. RF Frequency
0
0
LO Return Loss vs. LO Frequency
0
IF Return Loss vs. IF Frequency
RF Return Loss (dBm)
LO Return Loss (dB)
10
10
IF Return Loss (dB)
1200
1400
1600
LO Frequency (MHz)
1800
2000
5
5
5
10
15
15
15
20
1000
1200
1400
1600
RF Frequency (MHz)
1800
2000
20
1000
20
10
500
IF Frequency (MHz)
1000
WJ Communications, Inc.
• Phone: 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com
June 2002
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