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HMC555
v00.1205
GaAs MMIC I/Q MIXER 31 - 38 GHz
Typical Applications
The HMC555 is ideal for: * Microwave Radio
Features
Wide IF Bandwidth: DC - 3.5 GHz High Image Rejection: 15 dB High LO to RF Isolation: 50 dB High Input IP3: +20 dBm Passive Topology: No DC Bias Required Compact Size: 1.49mm x 1.15mm x 0.1mm
3
MIXERS - CHIP
* Satellite Communication Systems * Military End Use * Test Equipment & Sensors
Functional Diagram
General Description
The HMC555 is a compact I/Q MMIC mixer which can be used as either an Image Reject Mixer or a Single Sideband Upconverter. The chip utilizes two double balanced mixer cells and a 90 degree hybrid fabricated in a GaAs MESFET process. All data shown below is taken with the chip mounted in a 50 Ohm test fixture and includes the effects of 1 mil diameter x 12 mil length bond wires on each port. A low frequency quadrature hybrid was used to produce a 100 MHz USB IF output. This compact mixer is a much more compact alternative to hybrid style Image Reject Mixers and Single Sideband Upconverter assemblies, and is ideal for microwave radio applications. The redundant IF port connections located on opposing sides of the HMC555 chip, provide added layout flexibility.
Electrical Specifications, TA = +25 C, IF= 100 MHz, LO = +17 dBm*
Parameter Frequency Range, RF/LO Frequency Range, IF Conversion Loss (As IRM) Image Rejection 1 dB Compression (Input) LO to RF Isolation LO to IF Isolation IP3 (Input) Amplitude Balance Phase Balance 37 13 11 Min. Typ. 31 - 34 DC - 3.5 11 15 17 50 20 19 0.5 16 35 12 13 11 Max. Min. Typ. 34 - 38 DC - 3.5 10.5 17 16.5 40 16 21 1 12 12.5 Max. Units GHz GHz dB dB dBm dB dB dBm dB Deg
* Unless otherwise noted, all measurements performed as downconverter.
3 - 186
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
HMC555
v00.1205
GaAs MMIC I/Q MIXER 31 - 38 GHz
Image Rejection vs. Temperature
25
Data taken as IRM with External IF Hybrid Conversion Gain vs. Temperature
0
CONVERSION GAIN (dB)
-5
IMAGE REJECTION (dB)
20
15
3
+25C +85C -55C
-10
10
-15
+25C +85C -55C
5
-20 30 31 32 33 34 35 36 37 38 39 RF FREQUENCY (GHz)
0 30 31 32 33 34 35 36 37 38 39 RF FREQUENCY (GHz)
Conversion Gain vs. LO Drive
0
Return Loss
0
CONVERSION GAIN (dB)
-10
RETURN LOSS (dB)
-5
+15dBm +17dBm +19dBm
-5
-10
-15
-15
RF LO
-20 30 31 32 33 34 35 36 37 38 39 RF FREQUENCY (GHz)
-20 30 31 32 33 34 35 36 37 38 39 FREQUENCY (GHz)
Input P1dB vs. Temperature
20
Input IP3 vs. LO Drive
30
18 P1dB (dBm)
25
16
+25C +85C -55C
IP3 (dBm)
20
14
15
LO = +15 dBm LO = +17 dBm LO = +19 dBm
12
10
10 30 31 32 33 34 35 36 37 38 39 RF FREQUENCY (GHz)
5 30 31 32 33 34 35 36 37 38 39 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 - 187
MIXERS - CHIP
HMC555
v00.1205
GaAs MMIC I/Q MIXER 31 - 38 GHz
Quadrature Channel Data Taken Without IF Hybrid Isolations
0 -10 LO/IF2 -5 RESPONSE (dB)
IF Bandwidth*
0
ISOLATION (dB)
3
MIXERS - CHIP
-20 -30 LO/IF1 -40 -50 -60 -70 30 31 32 33 34 35 36 37 38 39 RF FREQUENCY (GHz) LO/RF RF/IF1 RF/IF2
-10
-15
RETURN LOSS CONVERSION GAIN
-20 0.5
1
1.5
2
2.5
3
3.5
4
4.5
IF FREQUENCY (GHz)
Amplitude Balance vs. LO Drive
3 2 1 0 -1 -2 -3 30 31 32 33 34 35 36 37 38 39 RF FREQUENCY (GHz)
LO = +15dBm LO = +17dBm LO = +19dBm
Phase Balance vs. LO Drive
25
PHASE BALANCE (degrees)
AMPLITUDE BALANCE (dB)
20
15
10
LO = +15dBm LO = +17dBm LO = +19dBm
5
0 30 31 32 33 34 35 36 37 38 39 RF FREQUENCY (GHz)
Upconverter Performance Conversion Gain vs. LO Drive*
0
Upconverter Performance Sideband Rejection vs. LO Drive*
0 SIDEBAND REJECTION (dBc) -5 -10 -15 -20 -25 -30 -35 -40
LO = +17dBm LO = +19dBm LO = +21dBm
CONVERSION GAIN (dB)
-5
-10
-15
+15dBm +17dBm +19dBm
-20 30 31 32 33 34 35 36 37 38 39 RF FREQUENCY (GHz)
30
31
32
33
34
35
36
37
38
39
RF FREQUENCY (GHz)
* Conversion gain data taken with external IF hybrid
3 - 188
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
HMC555
v00.1205
GaAs MMIC I/Q MIXER 31 - 38 GHz
Absolute Maximum Ratings
RF Input IF1 / IF2 Input LO Drive Channel Temperature Continuous Pdiss (T=85C) (derate 8.95 mW/C above 85C) Thermal Resistance (RTH) (channel to die bottom) Storage Temperature Operating Temperature ESD Sensitivity (HBM) +19 dBm +24 dBm +27 dBm 150C 582 mW
MxN Spurious Outputs
nLO mRF 0 1 2 3 4 0 xx 47 xx xx xx 1 -12 0 62 xx xx 2 xx 53 68 101 xx 3 xx xx 59 70 90 4 xx xx xx 90 104
3
MIXERS - CHIP
3 - 189
111.6 C/W -65 to +150 C -55 to +85 C Class 1A
RF = 35.1 GHz @ -10 dBm LO = 35 GHz @ +17 dBm Data taken without IF hybrid All values in dBc below IF power level
ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS
Outline Drawing
NOTES: 1. ALL DIMENSIONS ARE IN INCHES [MM] 2. DIE THICKNESS IS .004" 3. TYPICAL BOND PAD IS .004" 4. BACKSIDE METALIZATION: GOLD 5. BOND PAD METALIZATION: GOLD 6. BACKSIDE METAL IS GROUND 7. CONNECTION NOT REQUIRED FOR UNLABELED BOND PADS. 8. OVERALL DIE SIZE .002" 9. THIS DIE IS DESIGNED FOR PICK-UP WITH VACUUM (EDGE) COLLET TOOLS. TO PRECLUDE THE RISK OF PERMANENT DAMAGE, NO CONTACT TO THE DIE SURFACE IS ALLOWED WITHIN THIS RECTANGULAR AREA.
Die Packaging Information [1]
Standard WP-3 Alternate [2]
[1] Refer to the "Packaging Information" section for die packaging dimensions. [2] For alternate packaging information contact Hittite Microwave Corporation.
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
HMC555
v00.1205
GaAs MMIC I/Q MIXER 31 - 38 GHz
Pad Descriptions
Pad Number Function Description This pad is AC coupled and matched to 50 Ohms from 31 to 38 GHz. Interface Schematic
1
RF
3
4 LO
This pad is AC coupled and matched to 50 Ohms from 31 to 38 GHz. This pad is DC coupled. For applications not requiring operation to DC, this port should be DC blocked externally using a series capacitor whose value has been chosen to pass the necessary IF frequency range. For operation to DC, this pad must not source/sink more than 3mA of current or die non-function and possible die failure will result. Pads 5 and 6 are alternate IF ports. The backside of the die must be connected to RF/DC ground.
MIXERS - CHIP
2 (5)
IF2
3 (6)
IF1
GND
Assembly Diagrams
3 - 190
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
HMC555
v00.1205
GaAs MMIC I/Q MIXER 31 - 38 GHz
Mounting & Bonding Techiniques 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 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).
0.102mm (0.004") Thick GaAs MMIC
Wire Bond 0.076mm (0.003")
3
MIXERS - CHIP
3 - 191
RF Ground Plane
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 > 250V 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.
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 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 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 is recommended. 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

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