HMC264


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supply formats:
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storage systems for secure long
term product support
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HMC264
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HMC264
v02.1007
MIXERS - SUB-HARMONIC - CHIP
3
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 20 - 32 GHz
Typical Applications
Features
The HMC264 is ideal for:
Integrated LO Amplifier: -4 dBm Input
• Microwave Point-to-Point Radios
Sub-Harmonically Pumped (x2) LO
• LMDS
High 2LO/RF Isolation: 40 dB
• SATCOM
Small Size: 1.32 x 0.97 x 0.1 mm
Functional Diagram
General Description
The HMC264 chip is a sub-harmonically pumped
(x2) MMIC mixer with an integrated LO amplifier
which can be used as an upconverter or downconverter. The chip utilizes a GaAs PHEMT technology
that results in a small overall chip area of 1.28mm2.
The 2LO to RF isolation is excellent eliminating the
need for additional filtering. The LO amplifier is a
single bias (+3V to +4V) two stage design with only
-4 dBm nominal drive requirement. All data is measured with the chip in a 50 ohm test fixture connected
via 0.025 mm (1 mil) diameter wire bonds of minimal
length <0.31 mm (<12 mils).
Electrical Specifi cations, TA = +25° C, As a Function of LO Drive & Vdd
Parameter
IF = 1 GHz
LO = 0 dBm & Vdd = +4V
Min.
Max.
Min.
Typ.
Max.
IF = 1 GHz
LO = -4 dBm & Vdd = +3V
Min.
Typ.
Units
Max.
Frequency Range, RF
24 - 32
20 - 30
22 - 29
GHz
Frequency Range, LO
12 - 16
10 - 15
10.5 - 14.5
GHz
Frequency Range, IF
DC - 6
DC - 6
DC - 4
GHz
Conversion Loss
10
13
10
12
9
11
dB
Noise Figure (SSB)
10
13
10
12
9
11
dB
2LO to RF Isolation
29
35
29
40
18
22 ~ 30
2LO to IF Isolation
32
40
29
40 ~ 50
25
30
dB
IP3 (Input)
5
13
5
13
3
10
dBm
+3
+6
-3
0 ~ +4
-5
0 ~ +3
dBm
1 dB Gain Compression (Input)
Supply Current (Idd)
3 - 14
Typ.
IF = 1 GHz
LO = -4 dBm & Vdd = +4V
28
50
28
50
25
dB
50
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
HMC264
v02.1007
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 20 - 32 GHz
Conversion Gain vs.
Temperature @ LO = -4 dBm, Vdd = +3V
0
0
-5
-5
-10
-15
+25C
-55C
+85C
-20
-25
3
-10
-15
+25C
-55C
+85C
-20
-25
18
20
22
24
26
28
30
32
34
18
20
22
RF FREQUENCY (GHz)
0
0
-5
-5
-10
-8 dBm
-6 dBm
-4 dBm
-2 dBm
0 dBm
-20
-25
28
30
32
34
30
32
34
-10
-15
-6 dBm
-2 dBm
-4 dBm
-20
-25
18
20
22
24
26
28
30
32
34
18
20
22
RF FREQUENCY (GHz)
24
26
28
RF FREQUENCY (GHz)
Isolation @ LO = -4 dBm, Vdd = +4V
Isolation @ LO = -4 dBm, Vdd = +3V
10
10
0
0
-10
-10
ISOLATION (dB)
ISOLATION (dB)
26
Conversion Gain vs.
LO Drive @ Vdd = +3V
CONVERSION GAIN (dB)
CONVERSION GAIN (dB)
Conversion Gain vs.
LO Drive @ Vdd = +4V
-15
24
RF FREQUENCY (GHz)
-20
-30
-40
RF/IF
LO/RF
LO/IF
2LO/RF
2LO/IF
-50
-60
MIXERS - SUB-HARMONIC - CHIP
CONVERSION GAIN (dB)
CONVERSION GAIN (dB)
Conversion Gain vs.
Temperature @ LO = -4 dBm, Vdd = +4V
-20
-30
-40
RF/IF
LO/RF
LO/IF
2LO/RF
2LO/IF
-50
-60
-70
-70
18
20
22
24
26
28
RF FREQUENCY (GHz)
30
32
34
18
20
22
24
26
28
30
32
34
RF 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
3 - 15
HMC264
v02.1007
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 20 - 32 GHz
Input IP3 vs. LO Drive @ Vdd = +3V
20
15
15
10
10
IP3 (dBm)
20
5
-2 dBm
-4 dBm
-6 dBm
0
-2 dBm
-4 dBm
-6 dBm
-5
-10
-10
18
20
22
24
26
28
30
32
34
18
20
22
RF FREQUENCY (GHz)
Input IP3 vs.
Temperature @ LO = -4 dBm, Vdd = +4V
15
15
10
10
IP3 (dBm)
20
-55C
+25C
+85C
28
30
32
34
5
0
0
-5
-5
-10
-55C
+25C
+85C
-10
18
20
22
24
26
28
30
32
34
18
20
22
RF FREQUENCY (GHz)
26
28
30
32
34
Input IP2 vs. LO Drive @ Vdd = +3V
60
60
50
50
40
40
30
-6 dBm
-4 dBm
-2 dBm
20
24
RF FREQUENCY (GHz)
IP2 (dBm)
IP2 (dBm)
26
Input IP3 vs.
Temperature @ LO = -4 dBm, Vdd = +3V
20
5
24
RF FREQUENCY (GHz)
Input IP2 vs. LO Drive @ Vdd = +4V
30
-6 dBm
-4 dBm
-2 dBm
20
10
10
0
0
18
20
22
24
26
28
RF FREQUENCY (GHz)
3 - 16
5
0
-5
IP3 (dBm)
MIXERS - SUB-HARMONIC - CHIP
3
IP3 (dBm)
Input IP3 vs. LO Drive @ Vdd = +4V
30
32
34
18
20
22
24
26
28
30
RF 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
32
34
HMC264
v02.1007
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 20 - 32 GHz
Input IP2 vs.
Temperature @ LO = -4 dBm, Vdd = +3V
60
60
50
50
40
40
30
-55C
+25C
+85C
20
3
30
-55C
+25C
+85C
20
10
10
0
0
18
20
22
24
26
28
30
32
34
18
20
22
RF FREQUENCY (GHz)
Input P1dB vs.
Temperature @ LO = -4 dBm, Vdd = +4V
26
28
30
32
34
Input P1dB vs.
Temperature @ LO = -4 dBm, Vdd = +3V
7
7
6
6
5
5
4
4
P1dB (dBm)
P1dB (dBm)
24
RF FREQUENCY (GHz)
3
2
1
0
+25C
-55C
+85C
3
2
1
0
-1
-1
+25C
-55C
+85C
-2
-2
-3
-3
18
20
22
24
26
28
RF FREQUENCY (GHz)
30
32
34
18
20
22
24
26
28
30
RF 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
32
34
MIXERS - SUB-HARMONIC - CHIP
IP2 (dBm)
IP2 (dBm)
Input IP2 vs.
Temperature @ LO = -4 dBm, Vdd = +4V
3 - 17
HMC264
v02.1007
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 20 - 32 GHz
Upconverter Performance
Conversion Gain, LO = -4 dBm
Return Loss @ LO = -4 dBm, Vdd = +4V
0
3 - 18
RETURN LOSS (dB)
-5
-10
-15
Vdd = +4V
Vdd = +3V
-20
-25
-5
-10
IF
RF
LO
-15
-20
16
18
20
22
24
26
28
30
32
0
34
5
10
15
RF FREQUENCY (GHz)
20
25
30
35
40
FREQUENCY (GHz)
IF Bandwidth @ LO = -4 dBm, Vdd = +4V
MxN Spurious Outputs
@ LO Drive = -4 dBm, Vdd = +4V
0
nLO
mRF
IF CONVERSION GAIN (dB)
MIXERS - SUB-HARMONIC - CHIP
3
CONVERSION GAIN (dB)
0
-5
±5
±4
±3
±2
±1
0
-22
-34
-15
+26
1
x
-30
0
-3
-10
-15
-2
-36
-1
-54
2
-20
3
-25
0
1
2
3
4
5
6
7
8
9
10
-54
-74
-38
-66
-67
RF = 30 GHz @ -10 dBm
LO = 13.5 GHz @ -4 dBm
All values in dBc below the IF power level
IF 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
-10
HMC264
v02.1007
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 20 - 32 GHz
Absolute Maximum Ratings
+13 dBm
LO Drive (Vdd = +4V)
+13 dBm
Vdd
+5.5 Vdc
Storage Temperature
-65 to +150 °C
Operating Temperature
-55 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
3
Pad Descriptions
Pad Number
Function
Description
1
Vdd
Power supply for the LO Amplifier. An external RF bypass
capacitor of 100 - 330 pF is required. A MIM border capacitor
is recommended. The bond length to the capacitor should be
as short as possible. The ground side of the capacitor should
be connected to the housing ground.
2
RF
This pad is AC coupled
and matched to 50 Ohm.
3
IF
This pad is DC coupled and should be DC blocked
externally using a series capacitor whose value has been
chosen to pass the necessary IF frequency range. Any applied
DC voltage to this pin will result in die non-function and possible die failure.
4
LO
This pad is AC coupled
and matched to 50 Ohm.
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
MIXERS - SUB-HARMONIC - CHIP
RF / IF Input (Vdd = +4V)
3 - 19
HMC264
v02.1007
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 20 - 32 GHz
Outline Drawing
MIXERS - SUB-HARMONIC - CHIP
3
Die Packaging Information [1]
Standard
Alternate
GP-2 (Gel Pack)
[2]
[1] Refer to the “Packaging Information” section for die
packaging dimensions.
[2] For alternate packaging information contact Hittite
Microwave Corporation.
3 - 20
NOTES:
1. ALL DIMENSIONS ARE IN INCHES [MM].
2. DIE THICKNESS IS .004”.
3. TYPICAL BOND PAD IS .004” SQUARE.
4. BOND PAD SPACING CENTER TO CENTER IS .006”.
5. BACKSIDE METALLIZATION: GOLD.
6. BOND PAD METALLIZATION: GOLD.
7. BACKSIDE METAL IS GROUND.
8. CONNECTION NOT REQUIRED FOR UNLABELED BOND PADS.
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
HMC264
v02.1007
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 20 - 32 GHz
Mounting & Bonding Techniques for Millimeterwave GaAs MMICs
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 brought as close to the die as possible in order to
minimize bond wire length. Typical die-to-substrate spacing is 0.076mm (3 mils).
An RF bypass capacitor should be used on the Vdd input. A 100 pF single layer
capacitor (mounted eutuctically or by conductive epoxy) placed no further than
0.762mm (30 Mils) from the chip is recommended. The photo in figure 3 shows a
typical assembly for the HMC264 MMIC chip.
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
Figure 3: Typical HMC264 Assembly
Handling Precautions
0.254mm (0.010”) Thick Alumina
Thin Film Substrate
Figure 2.
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 has fragile air bridges and should not be touched with vacuum collet, tweezers, or fingers.
3
MIXERS - SUB-HARMONIC - CHIP
The die should be attached directly to the ground plane eutectically or with
conductive epoxy (see HMC general Handling, Mounting, Bonding Note).
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
Ball or wedge bond with 0.025 mm (1 mil) diameter pure gold wire. Thermosonic wirebonding with a nominal stage temperature of
150 °C and a ball bonding force of 40 to 50 grams or wedge bonding force of 18 to 22 grams is recommended. Use the minimum
level of ultrasonic energy to achieve reliable wirebonds. Wirebonds should be started on the chip and terminated on the package or
substrate. All bonds should be as short as possible <0.31 mm (12 mils).
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
3 - 21