AT-104

AT-104 is a kind of 5-bit GaAs digital attenuator.There are some features as follows.First is attenuation 1 dB steps to 31 dB.The second is TTL control interface.Then is fast switching speed,20 ns TYP.The last one is phase balance,+2/-4 degrees TYP.

What comes next is about the guaranteed specifications of AT-104(from -55 to +85).The frequency range is from 20 to 2000 MHz.The norminal attenuation is 1 dB Steps to 31 dB.The maximum attenuation accuracy is ±0.35 dB at 20 to 2000 MHz;The maximum attenuation accuracy is ±0.30 dB at 20 to 1000 MHz;The maximum attenuation accuracy is ±0.30 dB at 20 to 500 MHz.The maximum VSWR is 1.6:1 dB at 20 to 2000 MHz;The maximum VSWR is 1.6:1 at 20 to 1000 MHz;The maximum VSWR is 1.6:1 dB at 20 to 500 MHz.The maximum reference insertion loss is 8.5 dB at 20 to 2000 MHz;The maximum reference insertion loss is 8.0 dB at 20 to 1000 MHz;The maximum reference insertion loss is 7.5 dB at 20 to 500 MHz.

The following is about the operating characteristics of AT-104.The norminal impedance is 50 Ohms.The typical phase balance is +2/-12 Degrees at 2000 MHz;The typical phase balance is +2/-7 Degrees at 1000 MHz;The typical phase balance is +2/-4 Degrees at 500 MHz;The typical phase balance is ±2.0 Degrees at 100 MHz.The typical switching time (50% control to 90/10% RF) is 20 nS.The typical switching transients (unfiltered) is 350 mV.The typical input power for 1 dB compression is +27 dBm at 500 to 2000 MHz and is +20 dBm at 20 to 50 MHz.The maximum bias power is +5 Vdc @ 5 mA and is -12 Vdc @ 8 mA.