AT-635

Voltage Variable Absorptive Attenuator 35 dB, DC - 2.0 GHz Features • • • • • • • 35 dB Voltage Variable Attenuation at 1 GHz Single Voltage Control: 0 to -4 Volts Low DC Power Consumption Nanosecond Switching Speed Temperature Range: -40°C to +85°C SOIC-14 Plastic Package Tape and Reel Packaging Available AT-635 V6 Functional Schematic 14 13 12 11 10 9 8 Description M/A-COM’s AT-635 is a GaAs MMIC voltage variable absorptive attenuator in a low cost SOIC 14-lead surface mount plastic package. The AT-635 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-635 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 Pin Configuration Pin No. 1 2 3 4 5 6 Function VC Ground Ground Ground Ground Ground Ground Pin No. 8 9 10 11 12 13 14 Function RF2 Ground Ground Ground Ground Ground RF1 Ordering Information Part Number AT-635 AT-635TR 7 Package SOIC 14-Lead Plastic Package Tape and Reel Absolute Maximum Ratings 1,2 Parameter Input Power Control Voltage Operating Temperature Storing Temperature Note: Reference Application Note M513 for reel size information. Absolute Maximum +21 dBm -8.5 V < VC < +5 V -40°C to +85°C -65°C to +150°C 1. Exceeding any one or combination of these limits may cause permanent damage to this device. 2. M/A-COM does not recommend sustained operation near these survivability limits. 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 35 dB, DC - 2.0 GHz Electrical Specifications: TA = 25°C, Z0 = 50 Ω Parameter Insertion Loss AT-635 V6 Test Conditions3 DC - 0.5 GHz 0.5 - 1.0 GHz 1.0 - 2.0 GHz 10 dB Attenuation – DC - 2.0 GHz 20 dB Attenuation – DC - 2.0 GHz 30 dB Attenuation – DC - 2.0 GHz Units dB dB dB dB dB dB Ratio Min. — — — — — — — — — — — — — — Typ. 6.7 7.2 7.5 + 1.0 + 1.2 + 1.2 2.0:1 2 4 30 — — 34 47 Max. 7.0 7.4 7.8 + 1.3 + 1.5 + 1.5 — — — — 13 21 — — Flatness (Peak to Peak) VSWR Trise, Tfall Ton, Toff Transients Power Handling IP2 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 IP3 dBm dBm 18 18.5 31 4 36 4 — — 3. Control voltage: 0 to -4 volts @ 20 µA typical. 4. For levels above 6 dB attenuation. For levels below 6 dB, the minimum specification numbers apply. SOIC-14 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. 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 35 dB, DC - 2.0 GHz Typical Performance Curves Insertion Loss vs. Frequency 12 +25°C -40°C +85°C AT-635 V6 Attenuation vs. Control Voltage, F = 1 GHz 40 10 30 8 6 20 4 10 2 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 Frequency (GHz) Control Voltage (V) Attenuation vs. Frequency 50 VSWR vs. Frequency 3.5 Insertion Loss 5 dB Atten 10 dB Atten 35 dB Atten 40 3.0 30 2.5 20 2.0 10 1.5 0 0.0 1.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) Frequency (GHz) 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.