WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-433-5649 • e-mail: sales@wj.com • Web site: www.wj.com December 2000
HMJ9
Product Description
The HMJ9 is a high dynamic range, GaAs FET
mixer. As an upconverter, this active FET mix er
realizes a typical third order intercept point of
+35 dBm at an LO drive level of +17 dBm. The
HMJ9 comes in a low cost, J-lead package.
Typical applications include frequency up/down
conversion for receivers and transmitters used
in cellular communications systems.
Product Features
•+35 dBm IIP3
•No External Matching Elements
Required
•RF 860-900 MHz
•LO 1140-1160 MHz
•IF 250-280 MHz
•+17 dBm Drive Level
•+3V Bias (23 mA)
•Low Cost Sur face 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 por t power should not exceed 25 dBm.
Ordering Information
Part No. Description
HMJ9 High Dynamic Range FET Mixer
(Available in tape and reel)
HMJ9-PCB Fully Assembled Application Circuit
Function Pin No.
Ground 1
IF 2
Ground 3-9
+3V DC 10
Ground 11
Function Pin No.
Ground 12
LO 13
Ground 14-20
RF 21
Ground 22
1234567891011
22 212019 18171615 1413 12
High Dynamic Range FET Mixer
Specifications
Parameter Units Minimum Typical Maximum Condition
Frequency Range:
RF MHz 860 900
LO MHz 1140 1160
IF MHz 250 280
SSB Conversion Loss dB 8.5 9.3
Noise Figure dB 11
Isolation:
LO-RF dB 18 20
LO-IF dB 40 50
IF-RF dB 25
IIP3 dBm 32 35 RF = 900 MHz (0dBm)
Return Loss:
RF Port dB 10
LO Por t d B 9
IF Port dB 15
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™
Advanced Product Information
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-433-5649 • e-mail: sales@wj.com • Web site: www.wj.com December 2000
Conversion Loss vs. Input IF Frequency IIP3 vs. IF Frequency
IF Return Loss vs. IF Frequency LO Return Loss vs. LO Frequency
RF Return Loss vs. RF Frequency
L-I Isolation vs. LO Frequency
IF Frequency (MHz)
250 255 260 265 280270 275
40
38
36
34
32
30
RF = 870 MHz
RF = 885 MHz
RF = 900 MHz
Input Intercept Point (dBm)
Conversion Loss (dB)
IF Frequency (MHz)
250 255 260 265 270 275 280
9.0
8.6
7.8
8.2
7.4
7.0
LO Frequency (MHz)
Isolation (dB)
60
55
50
45
40
35
IF Return Loss (dB)
IF Frequency (MHz)
250 280275270265260255 870 900895890885880875
1100 12001180116011401120
-10
-20
-14
-16
-18
-12
RF Frequency (MHz)
RF Return Loss (dB)
-10.4
-11.0
-10.8
-10.9
-10.7
-10.6
-10.5
L-R Isolation vs. LO Frequency
LO Frequency (MHz)
Isolation (dB)
1100 1120 1140 1160 1180 1200
30
15
20
25
LO Frequency (MHz)
LO Return Loss (dB)
RF = 870 MHz
RF = 885 MHz RF = 900 MHz
I-R Isolation vs. IF Frequency
IF Frequency (MHz)
Isolation (dB)
-20
-30
-40
-50
-5
-10
-15
-60250 280275270260 265255
1100 1120 1140 1160 1180 1200
0
-20
LO = 1150 MHz
LO = 1150 MHz
HMJ9
Performance Charts
Advanced Product Information
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-433-5649 • e-mail: sales@wj.com • Web site: www.wj.com December 2000
HMJ9
This document contains information on a new product.
Specifications and information are subject to change without notice.
Caution! ESD sensitive device.
Outline Drawing
Land Pattern Mounting Configuration
Advanced Product Information
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-433-5649 • e-mail: sales@wj.com • Web site: www.wj.com