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HMC-ALH140
v02.0209
LOW NOISE AMPLIFIERS - CHIP
1
GaAs HEMT MMIC LOW NOISE
AMPLIFIER, 24 - 40 GHz
Typical Applications
Features
This HMC-ALH140 is ideal for:
Noise Figure: 4 dB
• Point-to-Point Radios
Gain: 11.5 dB
• Point-to-Multi-Point Radios
P1dB Output Power: +15 dBm
• VSAT
Supply Voltage: +4V @ 60 mA
• SATCOM
Die Size: 2.5 x 1.4 x 0.1 mm
Functional Diagram
General Description
The HMC-ALH140 is a two Stage GaAs MMIC HEMT
Low Noise Amplifier die which operates between
24 and 40 GHz. The amplifier provides 11.5 dB of
gain, from a bias supply of +4V @ 60 mA with
a noise figure of 4 dB. The HMC-ALH140 amplifier
die is ideal for integration into Multi-Chip-Modules
(MCMs) due to its small size (3.5 mm2).
Electrical Specifi cations, TA = +25° C, Vdd= 4V [1], Idd = 60mA [2]
Parameter
Min.
Frequency Range
Gain
Typ.
Max.
Min.
24 - 30
10
Typ.
Max.
Min.
24 - 40
12
10
11.5
10
Typ.
Max.
GHz
11.5
dB
Noise Figure
4
4
4
Input Return Loss
13
13
20
dB
Output Return Loss
15
15
20
dB
Output Power for 1 dB Compression
15
15
15
dBm
Supply Current (Idd)
60
100
60
100
60
100
[1] Unless otherwise indicated, all measurements are from probed die
[2] Adjust Vgg between -1V to +0.3V (Typ. -0.2V) to achieve Idd total = 60 mA
1 - 120
Units
35 - 40
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
mA
HMC-ALH140
v02.0209
GaAs HEMT MMIC LOW NOISE
AMPLIFIER, 24 - 40 GHz
14
5
12
NOISE FIGURE (dB)
4
GAIN (dB)
10
8
6
4
3
2
1
2
0
0
20
25
30
35
40
45
35
36
Input Return Loss vs. Frequency
38
39
40
Output Return Loss vs. Frequency
0
0
-5
-5
RETURN LOSS (dB)
RETURN LOSS (dB)
37
FREQUENCY (GHz)
FREQUENCY (GHz)
-10
-15
-20
-25
-10
-15
LOW NOISE AMPLIFIERS - CHIP
1
Noise Figure vs. Frequency
Linear Gain vs. Frequency
-20
-25
-30
-30
20
25
30
35
FREQUENCY (GHz)
40
45
20
25
30
35
40
45
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
1 - 121
HMC-ALH140
v02.0209
LOW NOISE AMPLIFIERS - CHIP
1
GaAs HEMT MMIC LOW NOISE
AMPLIFIER, 24 - 40 GHz
Absolute Maximum Ratings
Drain Bias Voltage
+5.5 Vdc
Gate Bias Voltage
-1 to +0.3 Vdc
RF Input Power
6 dBm
Channel Temperature
180 °C
Operating Temperature
-55 to +85 °C
Storage Temperature
-65 to +150 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
Die Packaging Information [1]
Standard
Alternate
GP-2 (Gel Pack)
[2]
NOTES:
1. ALL DIMENSIONS ARE IN INCHES [MM].
2. TYPICAL BOND PAD IS .004” SQUARE.
[1] Refer to the “Packaging Information” section for die
packaging dimensions.
[2] For alternate packaging information contact Hittite
Microwave Corporation.
1 - 122
3. BACKSIDE METALLIZATION: GOLD.
4. BACKSIDE METAL IS GROUND.
5. BOND PAD METALLIZATION: GOLD.
6. CONNECTION NOT REQUIRED FOR UNLABELED BOND PADS.
7. OVERALL DIE SIZE ±.002”
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
HMC-ALH140
v02.0209
GaAs HEMT MMIC LOW NOISE
AMPLIFIER, 24 - 40 GHz
Pad Number
Function
Description
1
RFIN
This pad is AC coupled and matched to
50 Ohms.
2, 6
Vdd
Power Supply Voltage for the amplifier. See assembly for
required external components.
3, 5
Vgg
Gate control for amplifier. Please follow “MMIC Amplifier Biasing Procedure” application note. See assembly for required
external components.
4
RFOUT
This pad is AC coupled and matched to
50 Ohms.
Die bottom
GND
Die bottom must be connected to RF/DC ground.
Interface Schematic
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
LOW NOISE AMPLIFIERS - CHIP
1
Pad Descriptions
1 - 123
HMC-ALH140
v02.0209
Assembly Diagram
LOW NOISE AMPLIFIERS - CHIP
1
GaAs HEMT MMIC LOW NOISE
AMPLIFIER, 24 - 40 GHz
Note 1: Bypass caps should be 100 pF (approximately) ceramic (single-layer) placed no farther than 30 mils from the amplifier
Note 2: Best performance obtained from use of <10 mil (long) by 3 by 0.5 mil ribbons on input and output.10 Ohms
Note 3: Gate bond pads (VG) exist on the upper & lower sides of the MMIC for assembly convenience. For best performance the
unused pad should be attached to a 100pF cap to ground, but is not required.
1 - 124
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
HMC-ALH140
GaAs HEMT MMIC LOW NOISE
AMPLIFIER, 24 - 40 GHz
1
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).
0.102mm (0.004”) Thick GaAs MMIC
Wire Bond
0.076mm
(0.003”)
RF Ground Plane
Microstrip substrates should be placed as close to the die as possible in
order to minimize bond wire length. Typical die-to-substrate spacing is
0.076mm to 0.152 mm (3 to 6 mils).
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:
strikes.
Follow ESD precautions to protect against ESD
Transients: Suppress instrument and bias supply transients while bias
is applied. Use shielded signal and bias cables to minimize inductive
pick-up.
0.127mm (0.005”) Thick Alumina
Thin Film Substrate
Figure 1.
0.102mm (0.004”) Thick GaAs MMIC
Wire Bond
0.076mm
(0.003”)
RF Ground Plane
0.150mm (0.005”) Thick
Moly Tab
LOW NOISE AMPLIFIERS - CHIP
v02.0209
0.254mm (0.010”) Thick Alumina
Thin Film Substrate
Figure 2.
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 has fragile air bridges and should not be touched with vacuum collet, tweezers, or fingers.
Mounting
The chip is back-metallized and can be die mounted with AuSn eutectic preforms or with electrically conductive epoxy.
The mounting 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 temperature 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” (0.025 mm) 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
1 - 125
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