HMC331
v04.1007
GaAs MMIC PASSIVE FREQUENCY
DOUBLER, 12 - 18 GHz INPUT
Typical Applications
Features
Conversion Loss: 14 dB
Fo, 3Fo, 4Fo Isolation: 50 dB
Passive: No Bias Required
Die Size: 0.85 x 0.55 x 0.1 mm
2
FREQUENCY MULTIPLIERS - PASSIVE - CHIP
The HMC331 is suitable for:
• Wireless Local Loop
• LMDS, VSAT, and Point-to-Point Radios
• Test Equipment
Functional Diagram
General Description
The HMC331 is a passive miniature frequency
doubler MMIC. Suppression of undesired fundamental
and higher order harmonics is 50 dB typical with
respect to input signal level. The doubler utilizes the
same GaAs Schottky diode/balun technology found
in Hittite MMIC mixers. It features small size, requires
no DC bias, and adds no measurable additive phase
noise onto the multiplied signal.
Electrical Specifi cations,
T
A
= +25° C, As a Function of Drive Level
Input = +11 dBm
Parameter
Frequency Range, Input
Frequency Range, Output
Conversion Loss
FO Isolation
(with respect to input level)
3FO Isolation
(with respect to input level)
4FO Isolation
(with respect to input level)
45
50
50
Min.
Typ.
13 - 18
26 - 36
15
50
60
60
20
45
45
50
Max.
Min.
Input = +13 dBm
Typ.
12 - 18
24 - 36
14
50
60
60
20
45
47
50
Max.
Min.
Input = +15 dBm
Typ.
12 - 18
24 - 36
14
50
60
60
19
Max.
Units
GHz
GHz
dB
dB
dB
dB
2 - 22
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
HMC331
v04.1007
GaAs MMIC PASSIVE FREQUENCY
DOUBLER, 12 - 18 GHz INPUT
Conversion Loss vs.
Temperature @ +15 dBm Drive Level
0
+ 25 C
+ 85 C
-55 C
Conversion Loss
@ 25 C Vs. Drive Level
0
-5
-10
-15
-20
-25
-30
2
FREQUENCY MULTIPLIERS - PASSIVE - CHIP
2 - 23
+ 15 dBm
+ 13 dBm
+ 11 dBm
CONVERSION GAIN (dB)
-5
-10
-15
-20
-25
12
13
14
15
16
17
18
INPUT FREQUENCY (GHz)
CONVERSION GAIN (dB)
12
13
14
15
16
17
18
FREQUENCY (GHz)
Isolation @ +15 dBm Drive Level*
0
Fo
3Fo
4Fo
Input Return Loss vs. Drive Level
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
+ 15 dBm
+ 13 dBm
+ 11 dBm
-20
ISOLATION (dB)
-40
-60
-80
-100
10
15
20
25
30
35
40
45
50
FREQUENCY (GHz)
12
13
14
15
16
17
18
FREQUENCY (GHz)
*With respect to input level
Output Return Loss
For Three Input Frequencies
0
13 GHz In
15 GHz In
18 GHz In
Absolute Maximum Ratings
Input Drive
Storage Temperature
Operating Temperature
+27 dBm
-65 to +150 °C
-55 to +85 °C
RETURN LOSS (dB0
-6
-12
-18
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
-24
-30
22
24
26
28
30
32
34
36
OUTPUT FREQUENCY (GHz)
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
HMC331
v04.1007
GaAs MMIC PASSIVE FREQUENCY
DOUBLER, 12 - 18 GHz INPUT
Outline Drawing
2
FREQUENCY MULTIPLIERS - PASSIVE - CHIP
Die Packaging Information
[1]
Standard
GP-5 (Gel Pack)
Alternate
[2]
[1] Refer to the “Packaging Information” section for die
packaging dimensions.
[2] For alternate packaging information contact Hittite
Microwave Corporation.
NOTES:
1. ALL DIMENSIONS ARE IN INCHES [MM]
2. DIE THICKNESS IS .004”
3. TYPICAL BOND IS .004” SQUARE
4. BACKSIDE METALLIZATION: GOLD
5. BOND PAD METALLIZATION: GOLD
6. BACKSIDE METAL IS GROUND.
7. CONNECTION NOT REQUIRED FOR
UNLABELED BOND PADS.
Pad Description
Pad Number
Function
Description
Interface Schematic
1
RFIN
DC coupled and matched to 50 Ohm.
2
RFOUT
DC coupled and matched to 50 Ohm.
Die Bottom
GND
Die bottom must be connected to RF/DC ground.
2 - 24
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
HMC331
v04.1007
GaAs MMIC PASSIVE FREQUENCY
DOUBLER, 12 - 18 GHz INPUT
Mounting & Bonding Techniques for Millimeterwave GaAs MMICs
The die should be attached directly to the ground plane eutectically or with
conductive epoxy (see HMC general Handling, Mounting, Bonding Note).
50 Ohm Microstrip transmission lines on 0.127mm (5 mil) thick alumina thin film
substrates are recommended for bringing RF to and from the chip (Figure 1). If
0.254mm (10 mil) thick alumina thin film substrates must be used, the die should be
raised 0.150mm (6 mils) so that the surface of the die is coplanar with the surface
of the substrate. One way to accomplish this is to attach the 0.102mm (4 mil) thick
die to a 0.150mm (6 mil) thick molybdenum heat spreader (moly-tab) which is then
attached to the ground plane (Figure 2).
Microstrip substrate should be brought as close to the die as possible in order to
minimize ribbon bond length. Typical die-to-substrate spacing is 0.076mm (3 mils).
Gold ribbon of 0.075mm ( 3 mil) width and minimal length <0.31mm ( <12 mils) is
recommended to minimize inductance on RF ports.,
0.102mm (0.004”) Thick GaAs MMIC
Wire 3 mil Ribbon Bond
2
FREQUENCY MULTIPLIERS - PASSIVE - CHIP
2 - 25
0.076mm
(0.003”)
RF Ground Plane
0.127mm (0.005”) Thick Alumina
Thin Film Substrate
Figure 1.
Handling Precautions
Follow these precautions to avoid permanent damage.
Storage:
All bare die are placed in either Waffle or Gel based ESD protective
containers, and then sealed in an ESD protective bag for shipment. Once the
sealed ESD protective bag has been opened, all die should be stored in a dry
nitrogen environment.
Cleanliness:
Handle the chips in a clean environment. DO NOT attempt to clean
the chip using liquid cleaning systems.
Static Sensitivity:
Follow ESD precautions to protect against ESD strikes.
Transients:
Suppress instrument and bias supply transients while bias is applied.
Use shielded signal and bias cables to minimize inductive pick-up.
General Handling:
Handle the chip along the edges with a vacuum collet or with
a sharp pair of bent tweezers. The surface of the chip may have fragile air bridges
and should not be touched with vacuum collet, tweezers, or fingers.
0.102mm (0.004”) Thick GaAs MMIC
Ribbon Bond
0.076mm
(0.003”)
RF Ground Plane
0.150mm (0.005”) Thick
Moly Tab
0.254mm (0.010”) Thick Alumina
Thin Film Substrate
Figure 2.
Mounting
The chip is back-metallized and can be die mounted with AuSn eutectic preforms or with electrically conductive epoxy. The mount-
ing surface should be clean and flat.
Eutectic Die Attach:
A 80/20 gold tin preform is recommended with a work surface temperature of 255 °C and a tool temperature of
265 °C. When hot 90/10 nitrogen/hydrogen gas is applied, tool tip temperature should be 290 °C. DO NOT expose the chip to a tem-
perature greater than 320 °C for more than 20 seconds. No more than 3 seconds of scrubbing should be required for attachment.
Epoxy Die Attach:
Apply a minimum amount of epoxy to the mounting surface so that a thin epoxy fillet is observed around the
perimeter of the chip once it is placed into position. Cure epoxy per the manufacturer’s schedule.
Wire Bonding
RF bonds made with 0.003” x 0.0005” ribbon are recommended. These bonds should be thermosonically bonded with a force of
40 - 60 grams. DC bonds of 0.001” (0.025mm) diameter, thermosonically bonded, are recommended. Ball bonds should be made
with a force of 40 - 50 grams and wedge bonds at 18 - 22 grams. All bonds should be made with a nominal stage temperature of 150
°C. A minimum amount of ultrasonic energy should be applied to achieve reliable bonds. All bonds should be as short as possible,
less than 12 mils (0.31 mm).
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
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