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14.2-15.2 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
14OSC0501 Features
On-Chip Prescaler +6.0 dBm Output Power -88 dBc/Hz @ 100KHz Phase Noise -40 dBc Harmonic Suppression 110mA @ 4.0V 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 14.2-15.2 GHz GaAs HBT VCO is a fully integrated oscillator MMIC with on-chip frequency doubler and divide-by-8 prescaler (w.r.t RFout). This design is based on a cross coupled differential pair with on-chip tuning diode and resonator. The use of a high-Q resonator structure and integrated varactor diodes results in optimum phase-noise performance, whilst the integration of frequency doubler and prescaler reduce application complexity and time-to-market. 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 (Vcc1,2,3) Supply Voltage (Vtune) Supply Current (Icc1,2,3) Supply Current (Itune) Storage Temperature (Tstg) Operating Temperature (Ta) Junction Temperature (Tjn)
+5.0 VDC +7.0 VDC 150 mA 1 mA -65 to +165 OC -55 to MTTF Table1 MTTF Table1
Electrical Characteristics (Ambient Temperature T = 25 oC)
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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. 14.2 1.775 +1.0 -
Frequency Range (f ) Prescaler Frequency Range (f ) Fundamental Output Power (Pout) Prescaler Output Power (Pout) SSB Phase Noise @ 100 kHz Offset SSB Phase Noise @ 1 MHz Offset Subharmonic Suppression 2nd Harmonic Suppression 3rd Harmonic Suppression Frequency Pushing (Vcc) Supply Voltage (Vcc) Frequency Tuning Voltage (Vtune) Supply Current (Icc) (Vcc=4.0V Typical)
Units GHz GHz dBm dBm dBc/Hz dBc/Hz dBc dBc dBc
MHz/Volt
VDC VDC mA
Typ. +6.0 +2.0 -88.0 -113.0 -40.0 -48.0 -42.0 40.0 +4.0 110
Pr
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. 15.2 1.900 +6.0 130
Page 1 of 5
14.2-15.2 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
14OSC0501 Oscillator Measurements
14OSC0501 Output Frequency vs. Tuning Voltage 15.4 15.2
700 900 800 14OSC0501 Kvco vs. Tuning Voltage
Kvco (MHz/Volt)
Fout (GHz)
600 500 400 300 200
14.8 14.6 14.4 14.2
100
14 1 2 3 Vtune (Volts) 4 5 6
0 1 2 3
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4 5 5 6
15
6
Vtune (Volts)
14OSC0501 Output Power vs. Tuning Voltage 10 8 -10 6 4 -20 0
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-30 -40 -50 -60 -70
Pharm (dBc)
Pout (dBm)
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1 2 3
14OSC0501 Output Harmonics vs. Vtune
2 0 -2 -4 -6 -8 -10
Div8 Div4 Div2 x2 x3
pr
6
1
2
3 Vtune (Volts)
4
5
4
Vtune (Volts)
Pr
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Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 2 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.
14.2-15.2 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
14OSC0501 Mechanical Drawing
2.000 (0.079) 0.732 (0.029)
3 4
1.631 (0.064)
5
1.229 (0.048)
0.495 (0.020) 0.297 (0.011) 0.000
2
7
6
0.000 0.991 (0.039) 1.389 (0.055)
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: 2.480 mg.
Bias Arrangement
e4 5
pr
Vcc2
Bond Pad #1 (RF Div2) Bond Pad #2 (RF Div1) Bond Pad #3 (RF Out)
Bond Pad #4 (Vcc1) Bond Pad #5 (Vtune)
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(Note: Engineering designator is 14OSC0501)
RF Out
3
Vcc1
Pr
Vtune (Maximum 100pF) Vtune
14OSC0501
2
RF Div1 RF Div RF Div2
1 7 6
Vcc3
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2.000 (0.079)
1
Bond Pad #6 (Vcc2) Bond Pad #7 (Vcc3)
Bypass Capacitors - See App Note [2] RF Out Vcc1
Vcc3
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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Vcc2
Page 3 of 5
14.2-15.2 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
14OSC0501
App Note [1] Biasing - As shown in the bonding diagram, this device is operated by separately biasing Vcc(1,2,3) and Vtune with Vcc(1,2,3) = +4.0 V and Vtune = +1.0 to +6.0 V, Icc1=30mA, Icc2=10mA, Icc3=70mA. App Note [2] Bias Arrangement - Each DC pad (Vcc1, 2, 3 and Vtune) needs to have DC bypass capacitance. (~100 - 200 pF, 100pF max on Vtune) as close to the device as possible. Prescaler output (RF Div1, RF Div2) can be used differential or single-end as required.
MTTF Table
Backplate Temperature 55 deg Celsius 75 deg Celsius 95 deg Celsius MTTF Hours FITs
These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry.
1.17E+08 1.03E+07 1.22E+06
8.55E+00 9.71E+01
Functional Diagram & Vtune Equivalent Input Circuit
Typical Application
Pr
e1.775-1.900 GHz
pr
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 4 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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8.20E+02
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14.2-15.2 GHz GaAs MMIC Voltage Controlled Oscillator
May 2005 - Rev 05-May-05
14OSC0501 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
od
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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