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LTC6401-20

Linear Technology
Part Number LTC6401-20
Manufacturer Linear Technology
Description Low Distortion Differential ADC Driver
Published Jul 30, 2007
Detailed Description www.DataSheet4U.com Electrical Specifications Subject to Change LTC6401-20 1.3GHz Low Noise, Low Distortion Differenti...
Datasheet PDF File LTC6401-20 PDF File

LTC6401-20
LTC6401-20

Overview
www.
DataSheet4U.
com Electrical Specifications Subject to Change LTC6401-20 1.
3GHz Low Noise, Low Distortion Differential ADC Driver for 140MHz IF FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTION The LTC®6401-20 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 LTC6401-20 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).
The LTC6401-20 saves space and power compared to alternative solutions using IF gain blocks and transformers.
The LTC6401-20 is packaged in a compact 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.
3GHz –3dB Bandwidth Fixed Gain of 10V/V (20dB) 40.
8dBm OIP3 at 140MHz 0.
91nV/√⎯H⎯z Internal Op Amp Noise 2.
1nV/√⎯H⎯z Total Input Noise 6.
1dB Noise Figure Differential Inputs and Outputs 200Ω Input Impedance 2.
85V ~ 3.
5V Supply Voltage 50mA Supply Current (150mW) 1V to 1.
6V Output Common 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 3V 0.
1μF + 1000pF V+ 0.
1μF +IN 66.
5Ω 0.
1μF VOCM +OUT +OUTF LTC6401-20 –OUTF –OUT –IN V– ENABLE 20dB GAIN 10Ω AIN+ VCM LTC2208 10Ω AIN– LTC2208 130Msps 16-Bit ADC 640120 TA01a Output IP3 vs Frequency...


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