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| MADA2030G 5-Bit GaAs Digital Attenuator DC- 2.0 GHz Features * Attenuation 0.5-dB Steps to 15.5 dB * Temperature Stability: 0.1 dB from -55C to +85C Typical * Fast Switching Speed: 3 nS Typical to 90% * Ultra Low DC Power Consumption Rev. V3 Die Description M/A-COM's MADA2030G is a 5-bit, 0.5-dB step GaAs MMIC digital attenuator. The MADA2030G is ideally suited for use where high accuracy, fast switching, very low power consumption and low intermodulation products are required at a low cost. Typical applications include radio and cellular equipment, wireless LANS, GPS equipment and other gain/level control circuits. The MADA2030G is fabricated with a monolithic GaAs MMIC using a mature 1-micron process. The process features full chip passivation for increased performance and reliability. Bond Pad Dimensions Bond Pad RFIN, RFOUT Dimension Inches (mm) 0.004 x 0.008 (0.100 x 0.200) Ordering Information Part Number MADA2030G Package DIE VC1, VC2, VC3, VC3, VC4, VC4 VC5, VC5 GND1, GND2, GND3 GND4 0.004 x 0.004 (0.100 x 0.100) 0.008 x 0.004 (0.200 x 0.100) 0.004 x 0.004 (0.100 x 0.100) 0.045 x 0.039 x 0.010 (1.14 x 0.99 x 0.25) Absolute Maximum Ratings 1,2 Parameter Input Power 500 MHz - 2 GHz Control Voltage Operating Temperature Storage Temperature DIE Size Absolute Maximum +34 dBm -8.5 VDC +175C -65C to +175C 1. Exceeding any one or combination of these limits may cause permanent damage to this device. 2. M/A-COM does not recommend sustained operation near these survivability limits. 1 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MADA2030G 5-Bit GaAs Digital Attenuator DC- 2.0 GHz Electrical Specifications: TA = 25C, Z0 = 50 Parameter Reference Insertion Loss Attenuation Accuracy VSWR (Worst Case) Rev. V3 Test Conditions DC - 1.0 GHz DC - 2.0 GHz DC - 2.0 GHz DC - 2.0 GHz (For any bit or combinations of bits per unit) 500 MHz 1.0 GHz 2.0 GHz 50% Control to 90% RF, 50% Control to 10% RF Unfiltered Transients 100 MHz Above 500 MHz for two-tone input power up to +5 dBm 100 MHz Above 500 MHz for two-tone input power up to +5 dBm 100 MHz Above 500 MHz VIN Low, 0 to -0.2 V VIN Hi, -5 V VIN Hi, -8 V Units dB dB Min. -- -- Typ. -- -- Max. 1.9 2.3 (0.3 dB 3% of attenuation setting in dB) dB Ratio nS mV dBm dBm dBm dBm dBm dBm A A A -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +1 / -2 +2 / -3 +4 / -6 3 7 24 27 45 68 40 45 -- 75 -- 1.6:1 -- -- -- -- -- -- -- -- -- -- -- 5 -- 250 Phase Balance Switching Characteristics Input Power for 1 dB Compression IP2 IP3 Control Voltages (Complementary Logic) Truth Table3 VC1 VC2 VC3 VC3 VC4 VC4 VC5 VC5 1 0 1 1 1 1 0 1 1 0 1 1 1 0 1 1 1 0 1 1 0 0 0 0 1 0 0 1 1 1 1 1 0 1 0 0 0 0 0 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 Handling Procedures Attenuation Setting Reference 0.5 dB 1 dB 2 dB 4 dB 8 dB 15.5 dB Please observe the following precautions to avoid damage: Static Sensitivity Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electricity. Proper ESD control techniques should be used when handling these devices. 3. 0 = VIN Low, 0 to -0.2 V, 1 = VIN Hi, -5 V to -8 V Schematic 2 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MADA2030G 5-Bit GaAs Digital Attenuator DC- 2.0 GHz Typical Performance Curves Attenuation 20 Rev. V3 Insertion Loss 2.0 +25C +85C -55C 1.8 15 0.5 dB Bit 1 dB Bit 2 dB Bit 4 dB Bit 8 dB Bit 15.5 dB Bit 1.6 10 1.4 5 1.2 0 0.0 0.5 1.0 1.5 2.0 1.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) Frequency (GHz) Worst Case VSWR 1.8 1.6 1.4 1.2 +25C +85C -55C 1.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) 3 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MADA2030G 5-Bit GaAs Digital Attenuator DC- 2.0 GHz Handling Procedures Permanent damage to the MADA2030G may occur if the following precautions are not adhered to: Cleanliness - The MADA2030G should be handled in a clean environment. DO NOT attempt to clean after the MADA2030G is installed. B. Static Sensitivity - All die handling equipment and personnel should be DC grounded. C. Transients - Avoid instrument and power supply transients while bias is applied to the MADA2030G. Use shielded signal and bias cables to minimize inductive pick-up. D. Bias - Apply voltage to either complementary control ports only when the other is grounded. Neither port should be allowed to "float". E. General Handling - It is recommended that the MADA2030G chip be handled along the long side of the die with a sharp pair of bent tweezers. DO NOT touch the surface of the chip with fingers or tweezers. A. Rev. V3 Wire Bonding Ball or wedge bond with 1.0 mil diameter pure gold wire. Thermosonic wire bonding with a nominal stage temperature of 150C and a ball bonding force of 40 to 50 grams or wedge bonding force of 18 to 22 grams is recommended. Ultrasonic energy and time should be adjusted to the minimum levels to achieve reliable wirebonds. B. Wirebonds should be started on the chip and terminated on the package. GND bonds should be as short as possible; at least three and no more than four bond wires from ground pads to package are recommended. A. Mounting The MADA2030G is back-metallized with Pd/Ni/Au (100/1,000/10,000A) metallization. It can be die-mounted using Au/Sn eutectic preforms or a thermally conductive epoxy. The package surface should be clean and flat before attachment. Eutectic Die Attach: A. An 80/20 Au/Sn preform is recommended with a work surface temperature of approximately 255C and a tool temperature of 265C. When hot 90/10 nitrogen/hydrogen gas is applied, tool tip temperature should be approximately 290C. B. DO NOT expose the MADA2030G to a temperature greater than 320C for more than 20 seconds. No more than 3 seconds of scrubbing should be required for attachment. Epoxy Die Attach: B Apply a minimum amount of epoxy and place the MADA2030G into position. A thin epoxy fillet should be visible around the perimeter of the die. C Cure epoxy per manufacturer's recommended schedule. D Electrically conductive epoxy may be used but is not required. 4 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. |
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