LTC6421-20

      The LTC6421-20 is a dual high speed differential amplifier targeted at processing signals from DC to 140MHz. The part has been specifi cally designed to drive 12-, 14- and 16-bit ADCs with low noise and low distortion, but can also
be used as a general-purpose broadband gain block.The LTC6421-20 is easy to use, with minimal support circuitry required. The output common mode voltage
is set using an external pin, independent of the inputs,which eliminates the need for transformers or AC-coupling capacitors in many applications. The gain is internally fixed at 20dB (10V/V).
      Features of LTC6421-20:(1)Matched Gain ±0.1dB;(2)Matched Phase ±0.2° at 100MHz;(3)Channel Separation 80dB at 100MHz;(4)1.3GH-3dB Bandwidth,Fixed Gain of 10V/V (20dB);(5)IMD3=-76dBc at 100MHz, 2VP-P;(6)Equivalent OIP3=42dBm at 100MHz;(7)6.2dB Noise Figure;(8)Differential Inputs and Outputs;(9)Rail-to-Rail Output Swing;(10)40mA Supply Current (120mW) per Amplifier;(11)1V to 1.6V Output Common Mode Voltage,Adjustable;(12)DC- or AC-Coupled Operation;(13)20-Lead 3mm×4mm×0.75mm QFN Package.
      LTC6421-20 has it's own absolute maximum ratings:(1)Supply Voltage:3.6V;(2)Input Current:±10mA;(3)Operating Temperature Range:-40°C to 85°C;(4)Specifi ed Temperature Range:-40°C to 85°C;(5)Storage Temperature Range:-65°C to 150°C;(6)Maximum Junction Temperature:150°C;(7)Output Short-Circuit Duration:Indefi nite.
      The LTC6421-20 is easy to use, with minimal support circuitry required. The output common mode voltage is set using an external pin, independent of the inputs which eliminates the need for transformers or AC-coupling capacitors in many applications. The gain is internally fixed at 20dB (10V/V).