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LTC6400-20

Linear Technology
Part Number LTC6400-20
Manufacturer Linear Technology
Description Low Distortion Differential ADC Driver
Published Jul 30, 2007
Detailed Description www.DataSheet4U.com Electrical Specifications Subject to Change LTC6400-20 1.8GHz Low Noise, Low Distortion Differenti...
Datasheet PDF File LTC6400-20 PDF File

LTC6400-20
LTC6400-20

Overview
www.
DataSheet4U.
com 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 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 LTC6400-20 saves space and power compared to alternative solutions using IF gain blocks and transformers.
The LTC6400-20 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.
8GHz –3dB Bandwidth Fixed Gain of 10V/V (20dB) –94dBc IMD3 at 70MHz 51dBm OIP3 at 70MHz (37dBm at 300MHz) 1nV/√Hz Internal Op Amp Noise 2.
1nV/√Hz Total Input Noise 6.
2dB Noise Figure Differential Inputs and Outputs 200Ω Input Impedance 2.
85V to 3.
5V Supply Voltage 90mA Supply Current (270mW) 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 3.
3V 1.
25V OUTPUT IP3 (dBm) 0.
1μF 1000pF V+ 0.
1μF +IN 66.
5Ω 0.
1μF VOCM +OUT +OUTF LTC6400-20 –OUTF –OUT –IN – V ENABLE 20dB GAIN 10Ω AIN+ VCM LTC2208 10Ω AIN– LTC2208 ...


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