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| Voltage Variable Absorptive Attenuator, 40 dB DC - 2 GHz AT-339 V 2.00 Features q q q q q q q q SO-14 40 dB Voltage Variable Attenuation Low Intermodulation Products Very Low Power Consumption: 50 W Dual Voltage Control 0 to -4 Volts Nanosecond Switching Speed Temperature Range: -40C to +85C Low Cost SOIC14 Plastic Package Tape and Reel Packaging Available1 Description M/A-COM's AT-339 is a GaAs MMIC voltage variable absorptive attenuator in a low cost SOIC 14-lead surface mount plastic package. The AT-339 is ideally suited for use where attenuation fine tuning, fast switching and very low power consumption are required. Typical applications include radio, cellular, and GPS equipment and other Automatic Gain/Level Control circuits. The AT-339 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-339 PIN AT-339TR AT-339RTR Package SOIC 14-Lead Plastic Package Forward Tape & Reel Reverse Tape & Reel Electrical Specifications, TA = +25C Parameter Insertion Loss Test Conditions2 DC - 0.1 GHz DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz 20 dB Attenuation 30 dB Attenuation 40 dB Attenuation Unit dB dB dB dB dB dB dB nS nS mV dBm dBm dBm dBm dBm Min. Typ. 0.6 0.8 1.2 1.3 +/-0.5 +/-1.5 +/-5.0 1.5:1 18 35 20 5 39 49 30 38 Max 0.9 1.1 1.4 1.5 +/-0.8 +/-1.8 +/-5.5 Flatness (peak to peak) VSWR (Matched) Trise, Tfall Ton, Toff Transients One dB Compression IP2 IP3 DC - 2.0 GHz 10% to 90% RF, 90% to 10% RF 50% Control to 90% RF, 50% Control to 10% RF In Band Input Power (over atten. range) Measured Relative (over atten. range) to Input Power (for two-tone input power up to +5 dBm) Measured Relative (over atten. range) to Input Power (for two-tone input power up to +5 dBm) 0.05 GHz 0.5 - 2.0 GHz 0.05 GHz 0.5 - 2.0 GHz 1. Refer to "Tape and Reel Packaging"Section, or contact factory. 2. All measurements at 1 GHz in a 50 system, unless otherwise specified.The A and B control voltages vary 0 to -4 volts @ 20 A typ. This Material Copyrighted by Its Respective Manufacturer Voltage Variable Absorptive Attenuator, 40 dB Absolute Maximum Ratings Parameter Max. Input Power 50 MHz 500-2000 MHz Control Voltage Operating Temperature Storage Temperature Absolute Maximum1 +27 dBm +30 dBm +5 V, -8.5 V -40C to +85C -65C to +150C AT-339 V 2.00 Functional Schematic 1. Operation of this device above any one of these parameters may cause permanent damage Electrical Schematic Pin Configuration Pin No. 1 2 3 4 5 6 7 Description B GND GND RF1 GND GND A Pin No. 8 9 10 11 12 13 14 Description GND GND GND RF2 GND GND GND Typical Performance This Material Copyrighted by Its Respective Manufacturer |
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