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| AT-230 Digital Attenuator, 28 dB, 3-Bit DC - 2.0 GHz Features * * * * * * * 4-dB Attenuation Steps to 28 dB High Accuracy Low DC Power Consumption: 50 W Low Intermodulation Product: +50 dBm IP3 Temperature Range: -40C to +85C SOIC-14 Plastic Package Tape and Reel Packaging Available Rev. V4 Functional Schematic RF1 14 GND 13 GND 12 GND 11 GND 10 GND 9 RF2 8 16 dB 8 dB 4 dB Description M/A-COM's AT-230 is a 3-bit, 4-dB step GaAs MMIC digital attenuator in a low cost SOIC 14-lead surface mount plastic package. The AT-230 is ideally suited for use where high accuracy, fast switching, very low power consumption and low intermodulation products are required. Typical applications include radio and cellular equipment, wireless LANs, GPS equipment and other Gain/Level Control circuits. The AT-230 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 5 6 7 VC1 VC1 VC2 VC2 VC3 VC3 GND Pin Configuration Pin No. 1 2 Function VC1 VC1 VC2 VC2 VC3 VC3 Ground Pin No. 8 9 10 11 12 13 14 Function RF2 Ground Ground Ground Ground Ground RF1 Ordering Information Part Number AT-230 AT-230TR 1 3 Package SOIC 14-Lead Plastic Package Forward Tape & Reel 4 5 6 7 1. Reference Application Note M513 for reel size information. Absolute Maximum Ratings 2 Parameter Input Power: 50 MHz 500-2000 MHz Control Voltage Operating Temperature Storing Temperature Absolute Maximum +27 dBm +34 dBm +5V, -8.5V -40C to +85C -65C to +150C 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-230 Digital Attenuator, 28 dB, 3-Bit DC - 2.0 GHz Electrical Specifications: TA = 25C, Z0 = 50 Parameter Reference Insertion Loss Rev. V4 Test Conditions DC-0.1 GHz DC-0.5 GHz DC-1.0 GHz DC-2.0 GHz DC-1.0 GHz DC-2.0 GHz Units dB dB dB dB Min -- -- -- -- Typ 1.2 1.5 1.6 1.8 Max 1.4 1.7 1.8 2.1 Attenuation Accuracy VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression (Input Power) (0.15 dB +3% of Atten Setting in dB) dB (0.30 dB +3% of Atten Setting in dB) dB Ratio -- -- -- -- -- -- -- -- 1.2:1 12 18 25 20 28 45 68 -- -- -- -- -- -- -- -- 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In Band 0.05 GHz 0.5-2.0 GHz 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 -- -- 40 50 -- -- SOIC-14 Truth Table Control Input VC3 VC3 VC2 VC2 VC1 VC1 1 0 1 1 0 0 1 0 0 1 1 1 0 1 0 0 0 1 0 1 1 1 1 0 0 0 0 0 1 1 Atten (dB) Reference 4 dB 8 dB 16 dB 28 dB 0 = VIN Low = 0 V to -0.2 V @ 20 A maximum. 1 = VIN High = -5 V @ 10 A typical to -8 V @ 200 A maximum. 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-230 Digital Attenuator, 28 dB, 3-Bit DC - 2.0 GHz Typical Performance Curves Insertion Loss 3.0 25 -40 +85 Rev. V4 Attenuation 30 2.5 25 2.0 20 1.5 15 1.0 10 0.5 5 0.0 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 2.0 Attenuation Accuracy 1.5 AttenDev 4 AttenDev8 AttenDev16 AttenDev28 1.8 1.0 Insertion Loss 4 dB Atten 8 dB Atten 16 dB Atten 0.5 1.6 0.0 1.4 -0.5 1.2 -1.0 1.0 0.0 -1.5 0.5 1.0 1.5 2.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) 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. |
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