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| Digital Attenuator, 28 dB, 3-Bit DC-2.0 GHz Features * * * * * * * 4-dB Attenuation Steps to 28 dB High Accuracy Low DC Power Consumption: 50 W Low Intermodulation Product: +50 dBm IP3 Temperature Range: -40C to +85C SOIC-14 Plastic Package Tape and Reel Packaging Available AT-230 V4 Functional Schematic RF1 14 GND 13 GND 12 GND 11 GND 10 GND 9 RF2 8 16 dB 8 dB 4 dB Description M/A-COM's AT-230 is a 3-bit, 4-dB step GaAs MMIC digital attenuator in a low cost SOIC 14lead 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. 1 2 3 4 5 6 7 VC1 VC1 VC2 VC2 VC3 VC3 GND Pin Configuration Pin No. 1 2 3 4 Function VC1 VC1 VC2 VC2 VC3 VC3 Ground Pin No. 8 9 10 11 12 13 14 Function RF2 Ground Ground Ground Ground Ground RF1 Ordering Information Part Number AT-230 AT-230TR Package SOIC 14-Lead Plastic Package Forward Tape & Reel 5 6 7 Absolute Maximum Ratings 1 Parameter Input Power: 50 MHz 500-2000 MHz Control Voltage Operating Temperature Storing Temperature Note: Reference Application Note M513 for reel size information. Absolute Maximum +27 dBm +34 dBm +5V, -8.5V -40C to +85C -65C to +150C 1. 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, 28 dB, 3-Bit DC-2.0 GHz Electrical Specifications: T A = 25C, Z0 = 50 Parameter Reference Insertion Loss AT-230 V4 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 Units dB dB dB dB Min -- -- -- -- Typ 1.2 1.5 1.6 1.8 Max 1.4 1.7 1.8 2.1 Attenuation Accuracy VSWR Trise, Tfall Ton, Toff Transients 1 dB Compression (Input Power) IP2 (0.15 dB +3% of Atten Setting in dB) dB (0.30 dB +3% of Atten Setting in dB) dB Ratio -- -- -- -- -- -- -- -- 1.2:1 12 18 25 20 28 45 68 -- -- -- -- -- -- -- -- 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In Band 0.05 GHz 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) nS nS mV dBm dBm dBm dBm IP3 dBm dBm -- -- 40 50 -- -- SOIC-14 Truth Table Control Input VC3 1 0 1 1 0 VC3 0 1 0 0 1 VC2 1 1 0 1 0 VC2 0 0 1 0 1 VC1 1 1 1 0 0 VC1 0 0 0 1 1 Atten (dB) Reference 4 dB 8 dB 16 dB 28 dB 0 = VIN Low = 0 V to -0.2 V @ 20 A maximum. 1 = VIN High = -5 V @ 10 A typical to -8 V @ 200 A 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, 28 dB, 3-Bit DC-2.0 GHz Typical Performance Curves Insertion Loss 3.0 25 -40 +85 AT-230 V4 Attenuation 30 2.5 25 2.0 20 1.5 15 1.0 10 0.5 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 2.0 1.5 Attenuation Accuracy 1.8 1.0 Insertion Loss 4 dB Atten 8 dB Atten 16 dB Atten AttenDev 4 AttenDev8 AttenDev16 AttenDev28 0.5 1.6 0.0 1.4 -0.5 1.2 -1.0 1.0 0.0 -1.5 0.5 1.0 1.5 2.0 0.0 0.5 1.0 1.5 2.0 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. |
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