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| Digital Attenuator, 15.5 dB, 5-Bit DC - 2 GHz Features q q AT-280 V 2.00 SO-16 q q q Attenuation: 0.5-dB Steps to 15.5 dB Temperature Stability: 0.15 dB from -40C to +85C Typical Ultra Low DC Power Consumption Low Intermodulation Products, IP3: 45 dBm Tape and Reel Packaging Available 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. 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. Ordering Information Part Number AT-280 PIN AT-280TR AT-280RTR assignment. Package SOIC 16-Lead Forward Tape & Reel* Reverse Tape & Reel* Electrical Specifications, TA = 25C Parameter Reference Insertion Loss Attenuation Accuracy2 VSWR Trise, Tfall Ton, Toff Transients One dB Compression IP2 (any state) Test Conditions2 * If specific reel size is required, consult factory for part number Unit dB dB dB dB Min. Typ. 1.1 1.3 1.5 1.8 Max 1.3 1.5 1.8 2.0 DC - 0.1 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 1.0 GHz DC - 2.0 GHz (0.20 dB + 3% of Atten. Setting in dB) dB (0.30 dB + 3% of Atten. Setting in dB) dB 1.5:1 nS nS mV dBm dBm dBm dBm dBm dBm 1.8:1 12 18 30 22 27 53 68 40 45 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In Band Input Power Input Power 0.05 GHz 0.5 - 2.0 GHz Measured Relative 0.05 GHz to Input Power 0.5 - 2.0 GHz (for two-tone input power up to +5 dBm) Measured Relative 0.05 GHz to Input Power 0.5 - 2.0 GHz (for two-tone input power up to +5 dBm) IP3 1. All measurements at 1 GHz in a 50 system, unless otherwise specified. 2. Attenuation accuracy specifications apply with negative bias control and low inductance grounding. Digital Attenuator, 15.5 dB, 5-Bit Absolute Maximum Ratings Parameter Max. Input Power 0.05 GHz 0.5 - 2.0 GHz Control Voltage Operating Temperature Storage Temperature 1 1 AT-280 V 2.00 Functional Schematic Absolute Maximum +27 dBm +34 dBm +5V, -8.5V -40C to +85C -65C to +150C 1.Operation of this device above any one of these parameters may cause permanent damage. Truth Table Control Inputs VC5 VC4 VC3 VC3 VC2 VC2 VC1 VC1 Attenuation (dB) 1 0 1 1 1 1 0 1 1 0 1 1 1 0 1 1 1 0 1 1 0 0 0 0 1 0 0 1 1 1 1 1 0 1 0 0 0 0 0 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 Reference 0.5 dB 1 dB 2 dB 4 dB 8 dB 15.5 dB 0 = VinLow = 0 V = 0 to -0.2 V @ 20 A maximum Typical Performance |
Price & Availability of AT-280
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