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MIXERS - DBL-BAL - SMT
9
9 - 2
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC128G8
GaAs MMIC SMT DOUBLE-
BALANCED MIXER, 1.8 - 5 GHz
v02.1105
General Description
Features
Functional Diagram
Conversion Loss: 10 dB
LO to RF and IF Isolation: >30 dB
High Third-Order Intercept: +18 dB
Electrical Speci cations, TA = +25° C, LO Drive = +15 dBm
Typical Applications
The HMC128G8 is a miniature double-balanced mixer
in a hermetic surface mount package that can be used
as an upconverter or downconverter. The device is
a passive diode/balun type mixer with high dynamic
range. Noise gure is essentially equal to the conver-
sion loss. The mixer can handle larger signal levels
than most active mixers due to the high third order
intercept. MMIC implementation provides exceptional
balance in the circuit resulting in high LO/RF and LO/
IF isolations.
The HMC128G8 is ideal for:
• Base Station
• MMDS
• WirelessLAN
• Wireless Local Loop
Parameter Min. Typ. Max. Units
Frequency Range, RF & LO 1.8 - 5.0 GHz
Frequency Range, IF DC - 2 GHz
Conversion Loss 10 12 dB
Noise Figure (SSB) 10 12 dB
LO to RF Isolation 28 40 dB
LO to IF Isolation 20 30 dB
IP3 (Input) 13 18 dBm
IP2 (Input) 35 40 dBm
1 dB Gain Compression (Input) 5 10 dBm
MIXERS - DBL-BAL - SMT
9
9 - 3
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
-20
-15
-10
-5
0
CONVERSION GAIN (dB)
01234
56
RF FREQUENCY (GHz)
LO= +15dBm
LO= +10dBm
-60
-50
-40
-30
-20
-10
0
ISOLATION (dB)
0123456
FREQUENCY (GHz)
RF/IF
LO/IF
LO/RF
Conversion Gain Isolation
-20
-15
-10
-5
0
RETURN LOSS (dB)
01234 56
FREQUENCY (GHz)
IF
LO
RF
Return Loss
Distortion and 1dB
Compression vs. LO Drive Level
Distortion
LO
Drive
RF(f1) = 3.01 GHz
RF(f2) = 3.00 GHz
LO = 3.5 GHz
RF Level = 0 dBm
1 dB
Compression
(dBm) IP3 (dBm) IP2 (dBm) P1dB (dBm)
+10 16 38 8
+13 18 40 10
+15 18 40 10
HMC128G8
GaAs MMIC SMT DOUBLE-
BALANCED MIXER, 1.8 - 5 GHz
v02.1105
MIXERS - DBL-BAL - SMT
9
9 - 4
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Outline Drawing
Absolute Maximum Ratings
LO Drive +27 dBm
Storage Temperature -65 to +150 °C
Operating Temperature -55 to +125 °C
NOTES:
1. PACKAGE MATERIAL: ALUMINA LOADED BOROSILICATE GLASS.
2. LEAD, BASE, COVER MATERIAL: KOVAR™ (#7052 CORNING).
3. PLATING: ELECTROLYTIC GOLD 50 MICROINCHES MIN., OVER
ELECTROLYTIC NICKEL 50 MICROINCHES MIN.
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. TOLERANCES: ±.005 [0.13] UNLESS OTHERWISE SPECIFIED.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
HMC128G8
GaAs MMIC SMT DOUBLE-
BALANCED MIXER, 1.8 - 5 GHz
v02.1105
MIXERS - DBL-BAL - SMT
9
9 - 5
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Evaluation PCB
Item Description
J1 - J3 PCB Mount SMA RF Connector
U1 HMC128G8 Mixer
PCB [2] 104880 Evaluation Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
The circuit board used in the nal application should
use RF circuit design techniques. Signal lines
should have 50 ohm impedance while the package
ground leads and exposed paddle should be con-
nected directly to the ground plane similar to that
shown. A sufficient number of via holes should be
used to connect the top and bottom ground planes.
The evaluation circuit board shown is available from
Hittite upon request.
HMC128G8
GaAs MMIC SMT DOUBLE-
BALANCED MIXER, 1.8 - 5 GHz
List of Materials for Evaluation PCB 104882 [1]
v02.1105
