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5.5-6.5 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
6OSC0460 Features
On-Chip Resonator +4.5 dBm Output Power -97 dBc/Hz @ 100KHz Phase Noise 20mA @ -5.0V Bias Supply 100% On-Wafer, DC and Output Power Testing 100% Visual Inspection to MIL-STD-883 Method 2010
Chip Device Layout
General Description
Mimix Broadband's 5.5-6.5 GHz GaAs HBT VCO is a fully integrated oscillator MMIC with on-chip tuning diode and resonator. This design is based on a cross coupled differential pair with on-chip buffer amplifier and output balun. The use of a high-Q resonator structure and integrated varactor diodes results in optimum phase-noise performance. This MMIC uses Mimix Broadband's 2 um GaAs HBT device model technology to ensure low flicker (1/f ) noise and high reliability. The chip has surface passivation to protect and provide a rugged part with backside via holes and gold metallization to allow either a conductive epoxy or eutectic solder die attach process. This device is well suited for Millimeter-wave Point-to-Point Radio, LMDS, SATCOM and VSAT applications.
Absolute Maximum Ratings
Supply Voltage (Vee1,2,3) Supply Voltage (Vtune) Supply Current (Iee1,2,3) Supply Current (Itune) Storage Temperature (Tstg) Operating Temperature (Ta) Junction Temperature (Tjn)
-6.0 VDC +6.0 VDC 30 mA 1 mA -65 to +165 OC -55 to MTTF Table MTTF Table1
1
Electrical Characteristics (Ambient Temperature T = 25 oC)
Frequency Range (f ) Fundamental Output Power (Pout) SSB Phase Noise @ 100 kHz Offset SSB Phase Noise @ 1 MHz Offset 2nd Harmonic Suppression 3rd Harmonic Suppression 4th Harmonic Suppression Frequency Pushing (Vee) Supply Voltage (Vee) Frequency Tuning Voltage (Vtune) Supply Current (Iee) (Vee=-5.0V Typical)
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Parameter
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(1) Junction temperature affects a device's MTTF. It is recommended to keep channel temperature as low as possible for maximum life.
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Min. 5.5 +0.0 -
Units GHz dBm dBc/Hz dBc/Hz dBc dBc dBc
MHz/Volt
VDC VDC mA
Typ. +4.5 -97.0 -118.0 -20.0 -30.0 -40.0 60.0 -5.0 20
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice. (c)2005 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws.
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Max. 6.5 +6.0 25
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5.5-6.5 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
6OSC0460 Oscillator Measurements
6OSC0460 Output Frequency vs. Tuning Voltage 6.6 6.4 6.2
Fout (GHz) Kvco (MHz/Volt)
6OSC0460 Kvco vs. Tuning Voltage 700 600 500 400 300 200
6 5.8 5.6 5.4 0 1 2 3 Vtune (Volts) 4 5 6
100 0 0 1 2 3 Vtune (Volts)
6OSC0460 Output Power vs. Tuning Voltage 10 8 6 4 2 0 -2 -4 -6 -8 -10 Vtune (Volts)
Pharm (dBc) Pout (dBm)
0 -10 -20 -30 -40 -50 -60
od
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0 1 2
6OSC0460 Harmonic Levels vs. Tuning Voltage
pr
0
1
2
3
4
5
6
3 Vtune (Volts)
Pr
e-
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice. (c)2005 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws.
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4 5 6 Pharm_2nd Pharm_3rd Pharm_4th 4 5 6
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5.5-6.5 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
6OSC0460 Mechanical Drawing
1.800 (0.071) 1.504 (0.060) 0.566 (0.022)
3 2 4
1.504 (0.060)
1.105 (0.044)
1
5
1.105 (0.044)
6
0.0
0.0 0.673 (0.027)
1.350 (0.053)
Units: millimeters (inches) Bond pad dimensions are shown to center of bond pad. Thickness: 0.110 +/- 0.010 (0.0043 +/- 0.0004), Backside is ground, Bond Pad/Backside Metallization: Gold All Bond Pads are 0.100 x 0.100 (0.004 x 0.004). Bond pad centers are approximately 0.109 (0.004) from the edge of the chip. Dicing tolerance: +/- 0.005 (+/- 0.0002). Approximate weight: 1.507 mg.
Bias Arrangement
RF Out
3
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pr
4 5
Bond Pad #1 (Vtune) Bond Pad #2 (Vee1)
Bond Pad #3 (RF Out) Bond Pad #4 (Vee2)
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Vee2 Vee3
(Note: Engineering designator is 6OSC0460)
Vee1
2
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Bond Pad #5 (Vee3) Bond Pad #6 (Vee3)
Bypass Capacitors - See App Note [2]
RF Out Vee2 Vee3
Page 3 of 5
Vtune
Pr
1
Vee1
(Maximum 100pF)
Vtune
6
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice. (c)2005 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws.
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5.5-6.5 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
6OSC0460
App Note [1] Biasing - As shown in the bonding diagram, this device is operated by separately biasing Vee1, Vee2, Vee3 and Vtune with Vee1 = Vee2 = Vee3 = -5.0 V and Vtune = 0.0 to 6.0 V, Iee1 = Iee2 = Iee3 = ~ 6.5 mA. App Note [2] Bias Arrangement - Each DC pad (Vee1, 2, 3 and Vtune) needs to have DC bypass capacitance. (~100 - 200 pF, 100pF max on Vtune) as close to the device as possible. The Vee3 pads have been tied together on chip and can be biased from either location.
These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry.
Backplate Temperature 55 deg Celsius 75 deg Celsius 95 deg Celsius
MTTF Hours
FITs
4.99E+09 3.47E+08 3.31E+07
2.00E-01 2.88E+00
Functional Diagram & Vtune Equivalent Input Circuit
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pr
Typical Application
Ref 10 MHz
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6OSC0460
5.5 - 6.5 GHz Fout 11-13 GHz
Pr
PLL IC
Icp
Loop Filter
Vtune
Prescalar
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Fvco
3.02E+01
Doubler
Fsample
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice. (c)2005 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws.
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Page 4 of 5
MTTF Table
5.5-6.5 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
6OSC0460 Handling and Assembly Information
CAUTION! - Mimix Broadband MMIC Products contain gallium arsenide (GaAs) which can be hazardous to the human body and the environment. For safety, observe the following procedures: Do not ingest. Do not alter the form of this product into a gas, powder, or liquid through burning, crushing, or chemical processing as these by-products are dangerous to the human body if inhaled, ingested, or swallowed. Observe government laws and company regulations when discarding this product. This product must be discarded in accordance with methods specified by applicable hazardous waste procedures.
Wire Bonding - Windows in the surface passivation above the bond pads are provided to allow wire bonding to the die's gold bond pads. The recommended wire bonding procedure uses 0.076 mm x 0.013 mm (0.003" x 0.0005") 99.99% pure gold ribbon with 0.5-2% elongation to minimize RF port bond inductance. Gold 0.025 mm (0.001") diameter wedge or ball bonds are acceptable for DC Bias connections. Aluminum wire should be avoided. Thermo-compression bonding is recommended though thermosonic bonding may be used providing the ultrasonic content of the bond is minimized. Bond force, time and ultrasonics are all critical parameters. Bonds should be made from the bond pads on the die to the package or substrate. All bonds should be as short as possible. Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 5 of 5
Characteristic Data and Specifications are subject to change without notice. (c)2005 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws.
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Die Attachment - GaAs Products from Mimix Broadband are 0.100 mm (0.004") thick and have vias through to the backside to enable grounding to the circuit. Microstrip substrates should be brought as close to the die as possible. The mounting surface should be clean and flat. If using conductive epoxy, recommended epoxies are Ablestick 84-1LMI or 84-1LMIT cured in a nitrogen atmosphere per manufacturer's cure schedule. Apply epoxy sparingly to avoid getting any on to the top surface of the die. An epoxy fillet should be visible around the total die periphery. If eutectic mounting is preferred, then a fluxless gold-tin (AuSn) preform, approximately 0.001 2 thick, placed between the die and the attachment surface should be used. A die bonder that utilizes a heated collet and provides scrubbing action to ensure total wetting to prevent void formation in a nitrogen atmosphere is recommended. The gold-tin eutectic (80% Au 20% Sn) has a melting point of approximately 280 C (Note: Gold Germanium should be avoided). The work station temperature should be 310 C + 10 C. Exposure to these extreme temperatures should be kept to minimum. The collet should be heated, and the die pre-heated to avoid excessive thermal shock. Avoidance of air bridges and force impact are critical during placement.
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pr
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ESD - Gallium Arsenide (GaAs) devices are susceptible to electrostatic and mechanical damage. Die are supplied in antistatic containers, which should be opened in cleanroom conditions at an appropriately grounded antistatic workstation. Devices need careful handling using correctly designed collets, vacuum pickups or, with care, sharp tweezers.
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Life Support Policy - Mimix Broadband's products are not authorized for use as critical components in life support devices or systems without the express written approval of the President and General Counsel of Mimix Broadband. As used herein: (1) Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. (2) A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
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