AT-109 Voltage Variable Absorptive Attenuator 35 dB, 0.5 - 2.0 GHz Functional Schematic 2,3,4 Features • • • • • • • Rev. V5 Single Positive Voltage Control: 0 to +5 Volts 35 dB Attenuation Range at 0.9 GHz ± 2 dB Linearity from BSL Low DC Power Consumption Temperature Range: -40°C to +85°C SOIC-8 Plastic Package Tape and Reel Packaging Available 8 7 6 5 1 2 3 4 Description M/A-COM’s AT-109 is a GaAs MMIC voltage variable absorptive attenuator in a low-cost SOIC-8 lead surface mount plastic package. The AT-109 is more linear than the higher attenuation range AT108. The AT-109 is ideally suited for use where linear attenuation fine tuning and very low power consumption are required. Typical applications include radio, cellular, GPS equipment and automatic gain/level control circuits. The AT-109 is fabricated with a monolithic GaAs MMIC using a mature 1-micron process. The process features full chip passivation for increased performance and reliability. Ordering Information 1 Part Number Package AT-109 SOIC 8-Lead Plastic Package AT-109TR Forward Tape and Reel AT-109SMB Sample Test Board 1. Reference Application Note M513 for reel size information. 2. VCC = +5 VDC ± 0.5 VDC @ 50 µA maximum. 3. VC = 0 VDC to +5 VDC @ 50 µA maximum. 4. External DC blocking capacitors are required on all RF ports. Pin Configuration Pin No. Function Pin No. Function 1 Ground 5 VC 2 Ground 6 Ground 3 RF Port 7 RF Port 4 VCC 8 Ground Absolute Maximum Ratings 5,6 Parameter Absolute Maximum Input Power +21 dBm Supply Voltage VCC -1 V < VCC < +8 V Control Voltage VC -1 V < VC < VCC + 0.5 V Operating Temperature -40°C to +85°C Storage Temperature -65°C to +150°C 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. 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-109 Voltage Variable Absorptive Attenuator 35 dB, 0.5 - 2.0 GHz Rev. V5 Electrical Specifications 7: TA = 25°C, Z0 = 50 Ω Parameter Test Conditions Units Min. Typ. Max. Insertion Loss 0.5 - 1.0 GHz 1.0 - 2.0 GHz dB dB — — 2.5 3.2 2.7 3.5 Attenuation 0.5 - 1.0 GHz 1.0 - 2.0 GHz dB dB 35 30 — — — — Flatness (Peak to Peak) 0.5 - 1.0 GHz 1.0 - 2.0 GHz dB dB — — ± 0.5 ± 1.2 ± 0.8 ± 1.5 VSWR — Ratio — 2:1 — Trise, Tfall 10% to 90% RF, 90% to 10% RF µS — 25 — Ton, Toff 50% Control to 90% RF, 50% Control to 10% RF µS — 35 — Transients In-band mV — 12 — 7. The RF ports must be blocked outside of the package from ground or any other voltage. SOIC-8 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-109 Voltage Variable Absorptive Attenuator 35 dB, 0.5 - 2.0 GHz Rev. V5 Typical Performance Curves @ 25°C Attenuation vs. Control Voltage, F = 900, 1800 MHz 0 IP3 vs. Control Voltage 35 1800 MHz 900 MHz -10 400 MHz 900MHz 30 25 -20 20 -30 15 -40 10 5 4 3 2 1 0 5 4 Control Voltage (V) 3 2 1 0 Control Voltage (V) Attenuation vs. Temperature, Normalized to 25°C, F = 900 MHz Insertion Loss vs. Frequency 4 4 -40°C +85°C 3 3 2 1 2 0 1 -1 -2 0 0.5 1.0 1.5 5 2.0 4 3 2 1 0 Control Voltage (V) Frequency (GHz) Return Loss vs. Control Voltage, F = 900 MHz 0 1 dB Compression vs. Control Voltage, F = 900 MHz 25 -5 20 -10 -15 15 -20 10 -25 -30 5 -35 -40 0 5 3 4 3 2 Control Voltage (V) 1 0 5 4 3 2 1 0 Control Voltage (V) 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.