AT-230 Digital Attenuator, 28 dB, 3-Bit DC - 2.0 GHz Functional Schematic Features • • • • • • • Rev. V4 4-dB Attenuation Steps to 28 dB High Accuracy Low DC Power Consumption: 50 µW Low Intermodulation Product: +50 dBm IP3 Temperature Range: -40°C to +85°C SOIC-14 Plastic Package Tape and Reel Packaging Available RF1 GND GND GND 14 13 12 11 16 dB GND GND RF2 9 8 10 4 dB 8 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. Ordering Information 1 Part Number Package AT-230 SOIC 14-Lead Plastic Package AT-230TR Forward Tape & Reel 1 2 3 4 5 6 7 VC1 VC1 VC2 VC2 VC3 VC3 GND Pin Configuration Pin No. Function Pin No. Function 1 VC1 8 RF2 2 VC1 9 Ground 3 VC2 10 Ground 4 VC2 11 Ground 5 VC3 12 Ground 6 VC3 13 Ground 7 Ground 14 RF1 1. Reference Application Note M513 for reel size information. Absolute Maximum Ratings 2 Parameter Absolute Maximum Input Power: 50 MHz 500-2000 MHz +27 dBm +34 dBm Control Voltage +5V, -8.5V Operating Temperature -40°C to +85°C Storing Temperature -65°C to +150°C 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 Rev. V4 Electrical Specifications: TA = 25°C, Z0 = 50 Ω Parameter Test Conditions Units Min Typ Max Reference Insertion Loss DC-0.1 GHz DC-0.5 GHz DC-1.0 GHz DC-2.0 GHz dB dB dB dB — — — — 1.2 1.5 1.6 1.8 1.4 1.7 1.8 2.1 Attenuation Accuracy DC-1.0 GHz DC-2.0 GHz ± (0.15 dB +3% of Atten Setting in dB) dB ± (0.30 dB +3% of Atten Setting in dB) dB VSWR Trise, Tfall 10% to 90% RF, 90% to 10% RF Ratio — 1.2:1 — nS — 12 — Ton, Toff 50% Control to 90% RF, 50% Control to 10% RF nS — 18 — Transients In Band mV — 25 — 1 dB Compression (Input Power) 0.05 GHz 0.5-2.0 GHz dBm dBm — — 20 28 — — IP2 0.05 GHz 0.5-2.0 GHz Measured Relative to Input Power (for two-tone input power up to +5 dBm) dBm dBm — — 45 68 — — IP3 0.05 GHz 0.5-2.0 GHz Measured Relative to Input Power (for two-tone input power up to +5 dBm) dBm dBm — — 40 50 — — SOIC-14 Truth Table Control Input VC3 VC3 VC2 VC2 VC1 VC1 Atten (dB) 1 0 1 0 1 0 Reference 0 1 1 0 1 0 4 dB 1 0 0 1 1 0 8 dB 1 0 1 0 0 1 16 dB 0 1 0 1 0 1 28 dB 0 = VIN Low = 0 V to –0.2 V @ 20 µA maximum. 1 = VIN High = -5 V @ 10 µA typical to –8 V @ 200 µA 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 Rev. V4 Typical Performance Curves Insertion Loss Attenuation 30 3.0 25 -40 +85 2.5 25 20 2.0 15 1.5 10 1.0 5 0.5 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 Attenuation Accuracy 2.0 1.5 AttenDev 4 AttenDev8 AttenDev16 AttenDev28 1.0 1.8 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 0.0 -1.0 -1.5 0.5 1.0 Frequency (GHz) 1.5 2.0 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.