Voltage Variable Absorptive Attenuator DC - 2 GHz AT-250 V 2.00 SO-8 Features ● ● ● ● ● ● ● ● 12 dB Voltage Variable Attenuation Low Intermodulation Products Low DC Power Consumption: 50 µW Single Voltage Control 0 to -4 Volts Nanosecond Switching Speed Temperature Range: -40˚C to +85˚C Low Cost SOIC 8 Plastic Package Tape and Reel Packaging Available1 Description M/A-COM’s AT-250 is a GaAs MMIC voltage variable absorptive attenuator in a low cost SOIC 8-lead surface mount plastic package. The AT-250 is ideally suited for use where attenuation fine tuning, fast switching and very low power consumption are required. Typical applications include radio, cellular, GPS equipment and other Automatic Gain/Level Control circuits. The AT-250 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-250 PIN AT-250TR AT-250RTR Package SOIC 8-Lead Plastic Package Forward Tape & Reel Reverse Tape & Reel Electrical Specifications, TA = +25°C Parameter Insertion Loss Flatness (Peak to Peak) VSWR Trise, Tfall Ton, Toff Transients Power Handling IP2 IP3 Test Conditions2 DC – 0.1 GHz DC – 0.5 GHz DC – 1.0 GHz DC – 2.0 GHz DC – 0.1 GHz DC – 0.5 GHz DC – 1.0 GHz DC – 2.0 GHz 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In Band Linear Operation Absolute Max Input Power 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) Unit dB dB dB dB dB dB dB dB Min. nS nS mV dBm dBm Typ. 2.9 3.0 3.2 3.4 +/– 0.1 +/– 0.2 +/– 0.5 +/– 1.2 2.1:1 3 5 10 13 21 dBm 28 40 34 47 dBm dBm 18 18.5 31(3) 36(3) 1. Refer to “Tape and Reel Packaging”Section, or contact factory. 2.All measurements at 1 GHz in a 50Ω system, unless otherwise specified.A control voltage 0 to -4 volts @ 20 µA typ. 3. For levels above 6 dB attenuation. For levels below 6 dB, the minimum specification numbers apply. Max 3.1 3.2 3.5 3.8 +/– 0.3 +/– 0.4 +/– 0.8 +/– 1.5 Voltage Variable Absorptive Attenuator Absolute Maximum Ratings1 Parameter Max. Input Power Control Voltage Operating Temperature Storage Temperature AT-250 V 2.00 Functional Schematic Absolute Maximum +21 dBm +5 V, -8.5 V -40°C to +85°C -65°C to +150°C 1.Operation of this device above any one of these parameters may cause permanent damage. Typical Performance Pin Configuration Pin No. 1 2 3 4 5 6 7 8 Description RF1 GND GND A GND GND GND RF2