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| AT-250 Voltage Variable Absorptive Attenuator 12 dB, DC - 2.0 GHz Features * * * * * * * * 12 dB Voltage Variable Attenuation Low Intermodulation Products Low DC Power Consumption: 50 W Single Voltage Control: 0 to -4 Volts Nanosecond Switching Speed Temperature Range: -40C to +85C SOIC-8 Plastic Package Tape and Reel Packaging Available Rev. V4 Functional Schematic RF2 8 GND 7 GND 6 GND 5 Description M/A-COM's AT-250 is a GaAs MMIC voltage variable absorptive attenuator in a low cost SOIC 8lead surface mount plastic package. The AT-250 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-250 is fabricated with a monolithic GaAs MMIC using a mature 1-micron process. The process features full chip passivation for increased performance and reliability. 1 2 3 4 RF1 GND GND VC Pin Configuration Pin No. 1 2 Function RF1 Ground Ground VC Pin No. 5 6 7 8 Function Ground Ground Ground RF2 Ordering Information 1 Part Number AT-250 AT-250TR 3 4 Package SOIC 8-Lead Plastic Package Forward Tape and Reel Absolute Maximum Ratings 2 Parameter Input Power Control Voltage Operating Temperature Storing Temperature Absolute Maximum +21 dBm +5V, -8.5V -40C to +85C -65C to +150C 1. Reference Application Note M513 for reel size information. 2. Exceeding any one or combination of these limits may cause permanent damage to this device. 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-250 Voltage Variable Absorptive Attenuator 12 dB, DC - 2.0 GHz Electrical Specifications: TA = 25C, Z0 = 50 Parameter Test Conditions3 DC - 0.1 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 0.1 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz Rev. V4 Units dB dB dB dB dB dB dB dB Ratio Min -- -- -- -- -- -- -- -- -- -- -- -- -- -- 28 40 Typ 2.9 3.0 3.2 3.4 + 0.1 + 0.2 + 0.5 + 1.2 2.1:1 3 5 10 13 21 34 47 Max 3.1 3.2 3.5 3.8 + 0.3 + 0.4 + 0.8 + 1.5 -- -- -- -- -- -- -- -- Insertion Loss Flatness (Peak to Peak) VSWR Trise, Tfall Ton, Toff Transients Power Handling 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In Band Linear Operation Absolute Maximum Input Power 0.05 GHz 0.5 - 2.0 GHz Measured Relative to Input Power (For two-tone Input Power Up to +5 dBm) 0.05 GHz 0.5 - 2.0 GHz Measured Relative to Input Power (For two-tone Input Power Up to +5 dBm) nS nS mV dBm dBm dBm dBm IP2 IP3 dBm dBm 18 18.5 313 363 -- -- 3. Control voltage: 0 to -4 volts @ 20 A typical. 4. For levels above 6 dB attenuation. For levels below 6 dB, the minimum specification numbers apply. SOIC-8 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-250 Voltage Variable Absorptive Attenuator 12 dB, DC - 2.0 GHz Typical Performance Curves Insertion Loss vs. Frequency 4 Rev. V4 Attenuation vs. Frequency 20 Atten5 Atten10 Atten15 3 +25C -40C +85C 15 2 10 1 5 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 2.0 Attenuation vs. Control Voltage, F = 950 MHz 15 1.8 10 1.6 0 dB 12 dB 5 dB 1.4 5 1.2 1.0 0.0 0.5 1.0 1.5 2.0 0 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 Frequency (GHz) Control Voltage (V) Phase vs. Control Voltage, F = 950 MHz 30 20 10 0 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 3 Control Voltage (V) 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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