LTC6400-20

` 1.8GHz-3dB Bandwidt
` Fixed Gain of 10V/V (20dB)
` -94dBc IM<sub>3</sub>at 70MHz (Equivalent OIP3 = 51dBm)
` -65dBc IM₃ at 300MHz (Equivalent OIP3 = 36.5dBm)
` 1nVHz Internal Op Amp Nois
` 2.1nVHz Total Input Nois
` 6.2dB Noise Figure
` Differential Inputs and Outputs
` 200 Input Impedance
` 2.85V to 3.5V Supply Voltage
` 90mA Supply Current (270mW)
` 1V to 1.6V Output Common Mode Voltage, Adjustable
` DC- or AC-Coupled Operation
` Max Differential Output Swing 4.4V_p-p
` Small 16-Lead 3mm*3mm*0.75mm QFN Package

The LTC^® 6400-20 is a high-speed differential ampli ertargeted at processing signals from DC to 300MHz. The part has been speci 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 LTC6400-20 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 ca-pacitors in any applications. The gain is internally  xed at 20dB (10V/V).

The LTC6400-20 saves space and power compared to alternative solutions using IF gain blocks and transform-ers. The LTC6400-20 is packaged in a compact 16-lead3mm* 3mm QFN package and operates over the -40 to 85mperature range