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2.0-16.0 GHz GaAs MMIC Frequency Divider
May 2005 - Rev 05-May-05
8SDV0500 Features
Divide-by-Four +5.0 dBm Output Power -30 dBc Fundamental Leakage Single-ended or Differential Input & Output 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 2.0-16.0 GHz GaAs MMIC freqency divider is an ECL (Emitter Coupled Logic) static frequency divider (divide-by-four) consisting of two cascaded divideby-two circuits. Even-order harmonic levels are minimized by driving the inputs with a balanced input signal, and by taking the output differentially, but the circuit can be operated in a single-ended fashion with unused inputs & outputs open circuit. This MMIC uses Mimix Broadband's 2 um GaAs HBT device model technology to ensure high reliability and uniformity. 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 (Vcc) Supply Current (Icc) Input Power (Pin) Storage Temperature (Tstg) Operating Temperature (Ta) Junction Temperature (Tch)
+7.0 VDC 150 mA +15 dBm -65 to +165 OC -55 to MTTF Table1 MTTF Table1
Electrical Characteristics (Ambient Temperature T = 25 oC)
Input Frequency Range (f ) Output Frequency Range (f ) Input Power (Pin) Output Power (Pout) Fin Suppression Fin/2 Suppression 3*Fin/4 Suppression 2*Fin Suppression Supply Voltage (Vcc) Supply Current (Icc) (Vcc=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. 2.0 0.5 -20.0 +4.0 -
Units GHz GHz dBm dBm dBc dBc dBc dBc VDC mA
Typ. +5.0 -30.0 -25.0 -15.0 -35.0 +5.0 110
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. 16.0 4.0 +5.0 +6.0 130
Page 1 of 5
2.0-16.0 GHz GaAs MMIC Frequency Divider
May 2005 - Rev 05-May-05
8SDV0500 Divider Measurements
Output Power vs. Input Frequency 10 8
Pout divide-by-four (dBm)
6 4 2 0 -2 -4 -6 0 2 4 6 8
Pin -20dBm Pin -10dBm Pin -5dBm Pin 0dBm Pin +5dBm
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10 12
14
Input Frequency (GHz)
Output Harmonics & Sub-harmonics vs. Input Frequency 0
-10
Pharm (dBc)
-20
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Fin Fin/2 3*Fin/4 2*Fin 0 2 4 6 8 10 12 14 16 Input Frequency (GHz)
-30
-40
-50
-60
Pr
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16
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 2 of 5
2.0-16.0 GHz GaAs MMIC Frequency Divider
May 2005 - Rev 05-May-05
8SDV0500 Mechanical Drawing
0.850 (0.033) 0.525 (0.021) 0.325 (0.013) 0.0
1 5
0.0 0.795 (0.031)
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2.000 (0.079)
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: 1.054 mg.
Bias Arrangement
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pr
Vcc
Bond Pad #1 (RF Out2) Bond Pad #2 (RF Out1)
Bond Pad #3 (RF In1) Bond Pad #4 (RF In2)
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(Note: Engineering designator is 8SDV0500)
Bond Pad #5 (Vcc)
Bypass Capacitors - See App Note [2]
RF Out1
1
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2
3 RF In1 4 RF In2
RF Out2
5
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
2
3
0.525 (0.021) 0.325 (0.013)
Page 3 of 5
2.0-16.0 GHz GaAs MMIC Frequency Divider
May 2005 - Rev 05-May-05
8SDV0500
App Note [1] Biasing - As shown in the bonding diagram, this device is operated by biasing Vcc with Vcc=5.0 V and Icc=100 mA. App Note [2] Bias Arrangement - Each DC pad (Vcc) needs to have DC bypass capacitance. (~100 - 200 pF) as close to the device as possible. RF In and RF Out can be single-ended or differential, 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.
2.21E+09 1.46E+08 1.33E+07
4.52E-01 8.50E-01 7.51E+01
Pr
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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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Functional Diagram
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2.0-16.0 GHz GaAs MMIC Frequency Divider
May 2005 - Rev 05-May-05
8SDV0500 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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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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