LTC6400-20 Datasheet | Linear Technology

.. Electrical Specifications Subject to Change LTC6400-20 1.8GHz Low Noise, Low Distortion Differential ADC Driver for 300MHz IF Features - - - - - - - - - - - - DESCRIPTION The LTC®6400-20 is a high-speed differential amplifier targeted at processing signals from DC to 300MHz. The part has been specifically 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 mon 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 20d B (10V/V). The LTC6400-20 saves space and power pared to alternative solutions using IF gain blocks and transformers. The LTC6400-20 is packaged in a pact 16-lead 3mm × 3mm QFN package and operates over the - 40°C to 85°C temperature range. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. - - - 1.8GHz - 3d B Bandwidth Fixed Gain of 10V/V (20d B) - 94d Bc IMD3 at 70MHz 51d Bm OIP3 at 70MHz (37d Bm at 300MHz) 1n V/√Hz Internal Op Amp Noise 2.1n V/√Hz Total Input Noise 6.2d B Noise Figure Differential Inputs and Outputs 200Ω Input Impedance 2.85V to 3.5V Supply Voltage 90m A Supply Current (270m W) 1V to 1.6V Output mon Mode Voltage, Adjustable DC- or AC-Coupled Operation Max Differential Output Swing 4.4VP-P Small 16-Lead 3mm × 3mm × 0.75mm QFN Package APPLICATIONS - - - - - Differential ADC Driver Differential Driver/Receiver Single Ended to Differential Conversion IF Sampling Receivers SAW Filter Interfacing TYPICAL APPLICATION Single-Ended to Differential ADC Driver 3.3V 1.25V OUTPUT IP3 (d Bm) 0.1μF 1000p F V+ 0.1μF +IN 66.5Ω 0.1μF VOCM +OUT +OUTF LTC6400-20 - OUTF - OUT - IN - V ENABLE 20d B GAIN 10Ω AIN+ VCM LTC2208 10Ω AIN-...