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| AT-220 Digital Attenuator, 30 dB, 4-Bit DC - 2.0 GHz Features * * * * * * * Attenuation 2-dB Steps to 30 dB High Accuracy Low Intermodulation Product: +50 dBm IP3 Low DC Power Consumption: 50 W SOIC-16 Plastic Package Tape and Reel Packaging Available Temperature Stability +/-0.15 dB: -40C to +85C Rev. V5 Functional Schematic RF1 16 GND 15 GND 14 GND 13 GND GND 12 11 GND 10 RF2 9 16 dB 8 dB 4 dB 2 dB Description M/A-COM's AT-220 is a 4-bit, 2-dB step GaAs MMIC digital attenuator in a low cost SOIC 16-lead surface mount plastic package. The AT-220 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-220 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 8 VC1 VC1 VC2 VC2 VC3 VC3 VC4 VC4 Pin Configuration Pin No. 1 2 Function VC1 VC1 VC2 VC2 VC3 VC3 VC4 VC4 Pin No. 9 10 11 12 13 14 15 16 Function RF2 GND GND GND GND GND GND RF1 Ordering Information Part Number AT-220 PIN AT-220TR* 3 4 Package SOIC 16-Lead Plastic Package 1000 piece reel 5 6 7 8 * Reference Application Note M513 for reel size information. Absolute Maximum Ratings 1 Parameter Input Power: 50 MHz 500-2000 MHz Control Voltage Operating Temperature Storage Temperature Absolute Maximum +27 dBm +34 dBm -8.5 V VC 5V -40C to +85C -65C to +150C 1. 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-220 Digital Attenuator, 30 dB, 4-Bit DC - 2.0 GHz Electrical Specifications: TA = 25C, VC = 0 V / -5 V, Z0 = 50 Parameter Insertion Loss (reference state) Rev. V5 Test Conditions Frequency DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 1.0 GHz DC - 2.0 GHz Units dB dB dB Min -- -- -- Typ 1.5 1.6 1.8 Max 1.7 1.8 2.1 Attenuation Accuracy 2 VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression IP2 IP3 Control Current 2. 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In-Band Input Power 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) |VC| = 5 V (0.15 dB + 3% of Atten Setting in dB) dB (0.30 dB + 4% of Atten Setting in dB) dB Ratio -- -- -- -- -- -- -- -- -- -- -- 1.2:1 12 18 25 20 28 45 68 40 50 -- -- -- -- -- -- -- -- -- -- 100 -- -- -- 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz nS nS mV dBm dBm dBm dBm dBm dBm A Attenuation accuracy specifications apply with negative bias control and low inductance grounding. SOIC-16 Truth Table 3 Control Inputs VC4 1 0 1 1 1 0 VC4 0 1 0 0 0 1 VC3 1 1 0 1 1 0 VC3 0 0 1 0 0 1 VC2 1 1 1 0 1 0 VC2 0 0 0 1 0 1 VC1 1 1 1 1 0 0 VC1 0 0 0 0 1 1 Attenuation (dB) Reference State 2 dB 4 dB 8 dB 16 dB 30 dB 3. 0 = -0.2 V to 0 V, 1 = -8 V to -5 V. 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-220 Digital Attenuator, 30 dB, 4-Bit DC - 2.0 GHz Typical Performance Curves Insertion Loss 3 Rev. V5 Attenuation 0 -5 2 -10 -15 1 +25C -40C +85C -20 -25 0 0.0 -30 0.5 1.0 1.5 2.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) Frequency (GHz) VSWR 2.0 IL 2 dB 4 dB 8 dB 16 dB Attenuation Accuracy 1.5 AttenDev 2 AttenDev4 Attendev8 AttenDev16 AttenDev30 1.8 1.0 1.6 0.5 1.4 0.0 -0.5 1.2 -1.0 1.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) -1.5 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. |
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