AT-280

Digital Attenuator, 15.5 dB, 5-Bit DC-2.0 GHz Features • • • • • • 0.5 dB Attenuation Steps to 15.5 dB Ultra Low DC Power Consumption Low Intermodulation Product: +45 dBm IP3 SOIC-16 Plastic Package Tape and Reel Packaging Available Temperature Stability: +/-0.15 dB from -40°C to +85°C AT-280 V5 Functional Schematic 16 15 14 13 12 11 10 9 8 dB 4 dB 2 dB 1 dB 0.5 dB Description M/A-COM’s AT-280 is a 5-bit, 0.5-dB step GaAs MMIC digital attenuator in a low cost SOIC 16-lead surface mount plastic package. The AT-280 is ideally suited for use where high accuracy, fast switching, very low power consumption and low intermodulation products are required at a low cost. 1 2 3 4 5 6 7 8 Typical applications include radio and cellular equipment, wireless LANS, GPS equipment and other gain/level control circuits. The AT-280 is fabricated with a monolithic GaAs MMIC using a mature 1-micron process. The process features full chip passivation for increased performance and reliability. Pin Configuration Pin No. 1 2 3 4 5 Function VC1 VC1 VC2 VC2 VC3 VC3 VC4 VC5 Pin No. 9 10 11 12 13 14 15 16 Function RF2 Ground Ground Ground Ground Ground Ground RF1 Ordering Information Part Number AT-280 AT-280TR AT-280SMB 1 6 Package 7 8 SOIC 16–Lead Forward Tape and Reel Sample Test Board (Includes 5 Samples) Absolute Maximum Ratings 2 Parameter Input Power: 0.05 GHz 0.5 - 2.0 GHz Control Voltage Operating Temperature Storage Temperature Absolute Maximum +27 dBm +34 dBm -8.5 V < VC < +5 V -40°C to +85°C -65°C to +150°C 1. Reference Application Note M513 for reel size information. 2. Exceeding any one or combination of these limits may cause permanent damage to this device. 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. Digital Attenuator, 15.5 dB, 5-Bit DC-2.0 GHz Electrical Specifications: TA = 25°C, Z0 = 50 Ω Parameter Reference Insertion Loss AT-280 V5 Test Conditions DC—0.1 GHz DC—0.5 GHz DC—1.0 GHz DC—2.0 GHz DC—1.0 GHz DC—2.0 GHz (Any state) 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In Band Input Power, 0.05 GHz Input Power, 0.5 - 2.0 GHz 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) Units dB dB dB dB Min — — — — Typ 1.1 1.3 1.5 1.8 Max 1.3 1.5 1.8 2.0 Attenuation Accuracy 3 VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression IP2 ± (0.20 dB +3% of Attenuation Setting in dB) dB ± (0.30 dB +3% of Attenuation Setting in dB) dB Ratio nS nS mV dBm dBm dBm dBm 1.5:1 — — — — — — — 1.8:1 12 18 30 22 27 53 68 — — — — — — — — IP3 dBm dBm — — 40 45 — — 3. Attenuation acccuracy specifications apply with negative bias control and low inductance grounding. SOIC-16 Truth Table 4,5 Control Inputs VC5 1 0 1 1 1 1 0 VC4 1 1 0 1 1 1 0 VC3 1 1 1 0 1 1 0 VC3 0 0 0 1 0 0 1 VC2 1 1 1 1 0 1 0 VC2 0 0 0 0 1 0 1 VC1 1 1 1 1 1 0 0 VC1 0 0 0 0 0 1 1 Atten. (dB) Reference 0.5 dB 1 dB 2 dB 4 dB 8 dB 15.5 dB 4. 0 = Vin Low = 0 V = 0 to –0.2 V @ 20 µA maximum 5. 1 = Vin High = -5 V at 20 µA to -8 V at 20 µA maximum 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. Digital Attenuator, 15.5 dB, 5-Bit DC-2.0 GHz Typical Performance Curves Insertion Loss 3.0 AT-280 V5 Attenuation Accuracy 0.3 0.5 dB Atten 1 dB Atten 2 dB Atten 4 dB Atten 8 dB Atten 15.5 dB Atten 2.5 +25°C -40°C +85°C 0.2 2.0 0.1 1.5 0.0 1.0 -0.1 0.5 -0.2 0.0 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) -0.3 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) VSWR 1.5 IL 1 dB 2 dB 4 dB 8 dB 16 dB 1.4 1.3 1.2 1.1 1.0 0.0 0.5 1.0 1.5 2.0 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.