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LTC6401IUD-26-PBF Datasheet(PDF) 1 Page - Linear Technology |
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LTC6401IUD-26-PBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page LTC6401-26 1 640126f FREQUENCY (MHz) 0 0 10 20 30 40 50 60 50 100 150 200 640126 TA01b NO RL RL = 200Ω DIFFERENTIAL INPUT (NOTE 7) TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION 1.6GHz Low Noise, Low Distortion Differential ADC Driver for DC-140MHz The LTC®6401-26 is a high-speed differential amplifier targeted at processing signals from DC to 140MHz. 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 LTC6401-26 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 of transformers or AC-coupling ca- pacitors in many applications. The gain is internally fixed at 26dB (20V/V). The LTC6401-26 saves space and power compared to alternative solutions using IF gain blocks and transform- ers. The LTC6401-26 is packaged in a compact 16-lead 3mm × 3mm QFN package and operates over the –40°C to 85°C temperature range. Equivalent OIP3 vs Frequency ■ 1.6GHz –3dB Bandwidth ■ Fixed Gain of 20V/V (26dB) ■ –85dBc IMD3 at 70MHz (Equivalent OIP3 = 46.5dBm) ■ –72dBc IMD3 at 140MHz (Equivalent OIP3 = 40dBm) ■ 1nV/√⎯H⎯z Internal Op Amp Noise ■ 1.5nV/√⎯H⎯z Total Input Referred Noise ■ 6.8dB Noise Figure ■ Differential Inputs and Outputs ■ 50Ω Input Impedance ■ 2.85V to 3.5V Supply Voltage ■ 45mA Supply Current (135mW) ■ 1V to 1.6V Output Common Mode, Adjustable ■ DC- or AC-Coupled Operation ■ Max Differential Output Swing 4.7VP-P ■ Small 16-Lead 3mm × 3mm × 0.75mm QFN Package ■ Differential ADC Driver ■ Differential Driver/Receiver ■ Single Ended to Differential Conversion ■ IF Sampling Receivers ■ SAW Filter Interfacing , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Single-Ended to Differential ADC Driver at 140MHz IF 37.4 Ω 150 Ω 0.1 μF 0.1 μF 640126 TA01a LTC6401-26 LTC2208 LTC2208 130Msps 16-BIT ADC 15 Ω 0.1 μF VIN 1000pF 3.3V 3.3V 15 Ω 10 Ω 10 Ω 100 Ω VOCM 0.1 μF 1.25V 33pF COILCRAFT 0603CS 33pF L1 24nH 33pF V+ –IN VOCM +IN +OUT –OUT V– AIN+ AIN– VCM VDD LTC6401-26 |
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