The Communications Edge
TM
HMJ7
High Dynamic Range FET Mixer
Product Information
Product Features
xꢀ +34 dBm IIP3
Product Description
Functional Diagram
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, 22-pin J-Lead package.
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.
xꢀ 67 dBc 2x1 Spur Rejection in
IF Band
RF
LO
xꢀ RF 1000 - 2000 MHz
xꢀ LO 1000 - 2000 MHz
xꢀ IF 10 - 1000 MHz
xꢀ +21 dBm LO Drive Level
xꢀ +5V Bias (40 mA)
+5Vdc
IF
xꢀ SMT J-Lead Package
Function
IF
LO
RF
+5V
Pin No.
2
Applications
xꢀ CATV Head-End Equipment
13
21
10
Ground
All other pins
Specifications (1)
Parameter
Units
Min
Typ
Max
Condition
RF Frequency Range
LO Frequency Range
IF Frequency Range
SSB Conversion Loss
Noise Figure
MHz
MHz
MHz
dB
1000 – 2000
1000 – 2000
10 – 1000
8.5
10.5
24
9.5
dB
dB
dB
dB
LO-RF Isolation
LO-IF Isolation
RF-IF Isolation
21
24
30
24
Input IP3
dBm
dB
dB
30
34
10
5
14
RF = 1018 MHz @ 0 dBm
RF Return Loss
LO Return Loss
IF Return Loss
dB
Spurious Rejection (2)
Input P1dB
dBc
dBm
dBm
mA
60
67
+23
+21
40
LO Drive Level
DC Current at +5V Bias
60
1. Test conditions unless otherwise noted: 25 ºC, RF = 1018.75 MHz @ 0 dBm, LO = 21 dBm, IF = 50, 650, 860 MHz in a high-side LO configuration.
2. The 2x1 spur is tested where the IM spur = 2 * RF input – LO, where RF input = 1018.75 MHz @ -5 dBm, LO = 1568.75 & 1668.75 MHz @ 21 dBm, IM spur = output frequency. The IM spur level is
specified in dBc with respect to the desired IF frequency calculated: IF output = LO - RF input.
Absolute Maximum Rating
Ordering Information
Parameters
Rating
-40 to +85 qC
-65 to +100 qC
+25 dBm
Part No.
HMJ7
HMJ7-PCB
Description
Operating Case Temperature
Storage Temperature
Maximum Input Power
High Dynamic Range FET Mixer
Fully Assembled Application Circuit
Operation of this device above any of these parameters may cause permanent damage.
Specifications and information are subject to change without notice
Page 1 of 3 January 2006
WJ Communications, Inc Phone 1-800-WJ1-4401 FAX: 408-577-6621 e-mail: sales@wj.com
Web site: www.wj.com