AT-264 Digital Attenuator, 4-Bit, Single Control 30 dB, 0.5 - 2.0 GHz Functional Schematic 2,3 Features • • • • Rev. V7 Positive Single Control 2-dB Attenuation Steps to 30 dB Low DC Power Consumption TSSOP-16 Plastic Package Vs 16 15 14 13 12 1 11 10 9 Description M/A-COM’s AT-264 is a 4-bit, 2-dB step GaAs MMIC digital attenuator in a low cost TSSOP-16 surface mount plastic package. The AT-264 is ideally suited for use where high accuracy, very low power consumption and low intermodulation products are required. Typical applications include radio, cellular, wireless LANs, GPS equipment and other gain/level control circuits. The AT-264 is fabricated using a mature 1 micron GaAs MESFET process. The process features full chip passivation for increased performance and reliability. 16 1 8 2 3 4 4 5 2 6 7 8 2. Blocking caps are required on all RF ports (39 pF used for data measurements). 3. Vs = +5 ± 0.2 VDC must be applied at RF1 or RF2 using a 10 KΩ or greater pull-up resistor. Pin Configuration Ordering Information1 Pin No. Function Pin No. Function Part Number Package 1 Ground 9 RF2 AT-264-PIN Bulk Packaging 2 Ground 10 Ground AT-264TR 1000 piece reel 3 VC1 11 Ground 4 VC2 12 Ground 5 VC3 13 Ground 6 VC4 14 Ground 7 Ground 15 Ground 8 Ground 16 RF1 1. Reference Application Note M513 for reel size information. 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-264 Digital Attenuator, 4-Bit, Single Control 30 dB, 0.5 - 2.0 GHz Rev. V7 Electrical Specifications4: TA = 25°C, Z0 = 50 Ω, VS = 5 V Parameter Test Conditions Units Min. Typ. Max. Reference Insertion Loss 0.5 - 1.0 GHz 0.5 - 2.0 GHz dB dB — — 2.0 2.2 2.4 2.6 Attenuation Accuracy 0.5 - 1.0 GHz 0.5 - 2.0 GHz VSWR 1.0 - 1.5 GHz 0.5 - 2.0 GHz Ratio Ratio — — 1.5:1 1.9:1 — — Trise, Tfall 10% to 90% RF, 90% to 10% RF ns — 200 — Ton, Toff 50% Control to 90% RF,50% Control to 10% RF ns — 200 — Transients In Band mV — 75 — 1 dB Compression Input Power, 0.5 GHz Input Power, 0.9 GHz dBm dBm — — 25 25 — — IP2 0.5 GHz 0.5 - 2.0 GHz Measured Relative to Input (for two-tone Input Power up to +5 dBm) dBm dBm — — 65 71 — — IP3 0.5 GHz 0.5 - 2.0 GHz Measured Relative to Input (for two-tone Input Power up to +5 dBm) dBm dBm — — 43 47 — — IC ⏐Vc⏐ = 5 V µA — — 10 IVS — µA — — 20 ± (0.15 dB + 5% of attenuation setting in dB) dB ± (0.3 dB + 5% of attenuation setting in dB) dB 4. External DC blocking capacitors are required on all RF ports. Loss varies at 0.003 dB/°C. Absolute Maximum Ratings 5,6 Truth Table7 Parameter Absolute Maximum Input Power 50 MHz 500 - 2000 MHz 1 1 1 1 Reference Insertion Loss +27 dBm +34 dBm 1 1 1 0 2 Control Voltage -0.5 V < VC < 8.5 V 1 1 0 1 4 Operating Temperature -40°C to +85°C 1 0 1 1 8 Storage Temperature -65°C to +150°C 0 1 1 1 16 0 0 0 0 30 5. Exceeding any one or combination of these limits may cause permanent damage to this device. 6. M/A-COM does not recommend sustained operation near these survivability limits. VC1 VC2 VC3 VC4 Attenuation (dB) 7. 0 = 0 ± 0.2 V, 1 = +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-264 Digital Attenuator, 4-Bit, Single Control 30 dB, 0.5 - 2.0 GHz Rev. V7 Typical Performance Curves VSWR Insertion Loss 2.0 3.5 -40°C +25°C +85°C 3.0 IL 2 dB 4 dB 8 dB 16 dB 30 dB 1.8 1.6 2.5 1.4 2.0 1.5 0.5 1.2 1.0 1.5 2.0 2.5 3.0 1.0 0.5 1.0 Attenuation 2.5 3.0 2.5 3.0 1.5 30 20 2.0 Attenuation Accuracy 35 25 1.5 Frequency (GHz) Frequency (GHz) 1.0 2 dB 4 dB 8 dB 16 dB 30 dB 0.5 0.0 15 -0.5 10 -1.0 5 0 0.5 2 dB 4 dB 8 dB 16 dB 30 dB -1.5 1.0 1.5 2.0 Frequency (GHz) 2.5 3.0 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. AT-264 Digital Attenuator, 4-Bit, Single Control 30 dB, 0.5 - 2.0 GHz Rev. V7 TSSOP-16 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. 4 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.