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| Voltage Variable Absorptive Attenuator 12 dB, DC-2.0 GHz Features * * * * * * * * Attenuation: 12 dB at 1 GHz Low Intermodulation Products Low DC Power Consumption: 50 W Single Voltage Control: 0 to -4 Volts Nanosecond Switching Speed Temperature Range: -40C to +85C SOT-143 Plastic Package Tape and Reel Packaging Available AT-259 V4 Functional Schematic 4 3 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. 1 2 Pin Configuration Pin No. 1 2 Function Ground VC Pin No. 3 4 Function RF2 RF1 Ordering Information Part Number AT-259 AT-259TR Package SOT 4-Lead Plastic Package Forward Tape and Reel Absolute Maximum Ratings 1 Parameter Input Power Control Voltage Absolute Maximum +21 dBm +5V, -8.5V -40C to +85C -65C to +150C Note: Reference Application Note M513 for reel size information. Operating Temperature Storage Temperature 1. Exceeding any one or combination of these limits may cause permanent damage to this device. 1 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. Voltage Variable Absorptive Attenuator 12 dB, DC-2.0 GHz Electrical Specifications: TA = 25C, Z0 = 50 Parameter Insertion Loss AT-259 V4 Test Conditions2 -- Frequency DC - 0.1 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 2.0 GHz DC - 2.0 GHz DC - 2.0 GHz -- -- -- -- -- -- 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz Units dB dB dB dB dB dB dB Ohms Ratio nS nS mV dBm dBm dBm dBm dBm dBm Min -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 18 18.5 Typ 2.9 3.0 3.2 3.4 + 0.2 + 2.3 + 7.0 50 2.1:1 3 5 10 -- -- 34 47 313 363 Max 3.1 3.2 3.5 3.8 + 0.4 + 2.5 + 7.5 -- -- -- -- -- 13 21 -- -- -- -- Flatness (Peak to Peak) Output Impedance VSWR Trise, Tfall Ton, Toff Transients Power Handling IP2 IP3 5 dB Attenuation 10 dB Attenuation 15 dB Attenuation -- -- 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 Measured Relative to Input Power (For two-tone Input Power Up to +5 dBm) Measured Relative to Input Power (For two-tone Input Power Up to +5 dBm) 2. Control voltage: 0 to -4 volts @ 20 A typical. 3. For levels above 6 dB attenuation. For levels below 6 dB, the minimum specification numbers apply. SOT-143 2 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. Voltage Variable Absorptive Attenuator 12 dB, DC-2.0 GHz Typical Performance Curves Insertion Loss vs. Frequency 4 20 AT-259 V4 Attenuation vs. Frequency 3 15 5 10 15 2 +25C -40C +85C 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 15 Attenuation vs. Control Voltage, F = 950 MHz 1.8 10 1.6 0 12 5 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) 3 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. * North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. |
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