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LT1815 Datasheet(PDF) 1 Page - Linear Technology |
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LT1815 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 16 page  LTC6400-14 1 640014fb FREQUENCY (MHz) 050 70 60 50 40 30 20 10 0 100 150 200 640020 TA01b 250 300 (NOTE 7) TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION 2.4GHz Low Noise, Low Distortion Differential ADC Driver for 300MHz IF The LTC®6400-14 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 LTC6400-14 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 many applications. The gain is internally fixed at 14dB (5V/V). The LTC6400-14 saves space and power compared to alternative solutions using IF gain blocks and transformers. The LTC6400-14 is packaged in a compact 16-lead 3mm × 3mm QFN package and operates over the – 40°C to 85°C temperature range. Equivalent Output IP3 vs Frequency n 2.4GHz –3dB Bandwidth n Fixed Gain of 5V/V (14dB) n –97dBc IMD3 at 70MHz (Equivalent OIP3 = 52.4dBm) n –66dBc IMD3 at 300MHz (Equivalent OIP3 = 36.9dBm) n 1.1nV/√Hz Internal Op Amp Noise n 2.5nV/√Hz Total Input Noise n 7.5dB Noise Figure n Differential Inputs and Outputs n 200 Ω Input Impedance n 2.85V to 3.5V Supply Voltage n 85mA Supply Current (255mW) n 1V to 1.6V Output Common Mode Voltage, Adjustable n DC- or AC-Coupled Operation n Max Differential Output Swing 4.8VP-P n Small 16-Lead 3mm × 3mm × 0.75mm QFN Package n Differential ADC Driver n Differential Driver/Receiver n Single Ended to Differential Conversion n IF Sampling Receivers n SAW Filter Interfacing R2 29Ω R1 68.5Ω C4 0.1μF C3 0.1μF 64014 TA01a LTC6400-14 LTC2208 RS1 15Ω C2 0.1μF VIN C1 1000pF 3.3V 3.3V RS2 15Ω RS3 10Ω RS4 10Ω R3 100Ω VOCM C5 0.1μF 1.25V CF2 33pF COILCRAFT 0603CS CF1 33pF L1 24nH CF3 33pF V+ –IN +IN +OUT –OUT V– AIN+ AIN– VCM VDD LTC2208 130Msps 16-Bit ADC Single-Ended to Differential ADC Driver L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. |
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