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LTC6401-26

Linear Technology
Part Number LTC6401-26
Manufacturer Linear Technology
Description Low Distortion Differential ADC Driver
Published Jul 11, 2009
Detailed Description www.DataSheet4U.com LTC6401-26 1.6GHz Low Noise, Low Distortion Differential ADC Driver for DC-140MHz DESCRIPTION The L...
Datasheet PDF File LTC6401-26 PDF File

LTC6401-26
LTC6401-26

Overview
www.
DataSheet4U.
com LTC6401-26 1.
6GHz Low Noise, Low Distortion Differential ADC Driver for DC-140MHz DESCRIPTION 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 capacitors 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 transformers.
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.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 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 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 at 140MHz IF 3.
3V 3.
3V 60 50 0.
1μF 1000pF V+ 15Ω +IN 0.
1μF +OUT L1 24nH 33pF 10Ω 33pF AIN– 10Ω AIN+ VDD LTC2208 VCM 33pF OUTPUT IP3 (dBm) 40 30 20 10 0 0 640126 TA01a Equi...


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