AT-259 Voltage Variable Absorptive Attenuator 12 dB, DC - 2.0 GHz Functional Schematic Features • • • • • • • • Rev. V5 Attenuation: 12 dB at 1 GHz Low Intermodulation Products Low DC Power Consumption: 50 μW Single Voltage Control: 0 to -4 Volts Nanosecond Switching Speed Temperature Range: -40°C to +85°C SOT-143 Plastic Package Tape and Reel Packaging Available Description M/A-COM’s AT-259 is a GaAs MMIC voltage variable absorptive attenuator in a low cost SOT-143 4-Lead surface mount plastic package. The AT-259 is ideally suited for use where attenuation fine tuning, fast switching and very low power consumption are required. Typical applications include radio, cellular, GPS equipment and other automatic gain/level control circuits. The AT-259 is fabricated with a monolithic GaAs MMIC using a mature 1 micron process. The process features full chip passivation for increased performance and reliability. Ordering Information Pin No. Function Pin No. Function 1 Ground 3 RF2 2 VC 4 RF1 Absolute Maximum Ratings 3 1,2 Part Number Package AT-259 Bulk Packaging AT-259TR Forward Tape and Reel AT-259SMB Sample Board 1. Reference Application Note M513 for reel size information. 2. All sample boards include 5 loose parts. † Pin Configuration Parameter Absolute Maximum Input Power +21 dBm Control Voltage +5V, -8.5V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150°C 3. Exceeding any one or combination of these limits may cause permanent damage to this device. Reference Application Note M538 for lead-free solder reflow recommendations. Meets JEDEC moisture sensitivity level 1 requirements. 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. AT-259 Voltage Variable Absorptive Attenuator 12 dB, DC - 2.0 GHz Rev. V5 Electrical Specifications: TA = 25°C, Z0 = 50 Ω Test Conditions4 Frequency Units Min. Typ. Max. Insertion Loss — DC - 0.1 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz dB dB dB dB — — — — 2.9 3.0 3.2 3.4 3.1 3.2 3.5 3.8 Flatness (Peak to Peak) 5 dB Attenuation 10 dB Attenuation 15 dB Attenuation DC - 2.0 GHz DC - 2.0 GHz DC - 2.0 GHz dB dB dB — — — + 0.2 + 2.3 + 7.0 + 0.4 + 2.5 + 7.5 Output Impedance — — Ohms — 50 — VSWR — — Ratio — 2.1:1 — Trise, Tfall 10% to 90% RF, 90% to 10% RF — nS — 3 — Ton, Toff 50% Control to 90% RF, 50% Control to 10% RF — nS — 5 — Transients In Band — mV — 10 — Power Handling Linear Operation Absolute maximum Input Power — dBm dBm — — — — 13 21 IP2 Measured Relative to Input Power (For two-tone Input Power Up to +5 dBm) 0.05 GHz 0.5 - 2.0 GHz dBm dBm — — 34 47 — — IP3 Measured Relative to Input Power (For two-tone Input Power Up to +5 dBm) 0.05 GHz 0.5 - 2.0 GHz dBm dBm 18 18.5 315 365 — — Parameter 4. Control voltage: 0 to -4 volts @ 20 µA typical. 5. For levels above 6 dB attenuation. For levels below 6 dB, the minimum specification numbers apply. SOT-143† † Meets JEDEC moisture sensitivity level 1 requirements. 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. AT-259 Voltage Variable Absorptive Attenuator 12 dB, DC - 2.0 GHz Rev. V5 Typical Performance Curves Insertion Loss vs. Frequency Attenuation vs. Frequency 4 20 3 15 +25°C -40°C +85°C 2 5 10 15 10 5 1 0 0.0 0.5 1.0 1.5 2.0 0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) Frequency (GHz) VSWR vs. Frequency Attenuation vs. Control Voltage, F = 950 MHz 2.0 15 1.8 10 1.6 0 12 5 1.4 5 1.2 1.0 0.0 0.5 1.0 Frequency (GHz) 1.5 2.0 0 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 Control Voltage (V) Handling Procedures 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 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.