LT6411 - 650MHz Differential ADC Driver/Dual Selectable Gain Amplifier


  • 650MHz –3dB Small-Signal Bandwidth
  • 600MHz –3dB Large-Signal Bandwidth
  • High Slew Rate: 3300V/µs
  • Easily Configured for Single-Ended to Differential Conversion
  • 200MHz ±0.1dB Bandwidth
  • User Selectable Gain of +1, +2 and –1
  • No External Resistors Required
  • 46.5dBm Equivalent OIP3 at 30MHz When Driving an ADC
  • IM3 with 2VP-P Composite, Differential Output:
    –87dBc at 30MHz, –83dBc at 70MHz
  • –77dB SFDR at 30MHz, 2VP-P Differential Output
  • 6ns 0.1% Settling Time for 2V Step
  • Low Supply Current: 8mA per Ampifier
  • Differential Gain of 0.02%, Differential Phase of 0.01°
  • 50dB Channel Separation at 100MHz
  • Wide Supply Range: ±2.25V (4.5V) to ±6.3V (12.6V)
  • 3mm × 3mm 16-Pin QFN Package

Typical Application

LT6411 Typical Application
LT6411 Typical Application


The LT6411 is a dual amplifier with individually selectable gains of +1, +2 and –1. The amplifiers have excellent distortion performance for driving ADCs as well as excellent bandwidth and slew rate for video, data transmission and other high speed applications. Single-ended to differential conversion with a system gain of 2 is particularly straightforward by configuring one amplifier with a gain of +1 and the other amplifier with a gain of –1. The LT6411 can be used on split supplies as large as ±6V and on a single supply as low as 4.5V. Each amplifier draws only 8mA of quiescent current when enabled. When disabled, the output pins become high impedance and each amplifier draws less than 350µA. The LT6411 is manufactured on Linear Technology’s proprietary, low voltage, complimentary, bipolar process and is available in the ultra-compact, 3mm × 3mm, 16pin QFN package.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LT6411CUD#PBF 3x3 QFN-16 UD C 05-08-1691 Yes
LT6411CUD#TRPBF 3x3 QFN-16 UD C 05-08-1691 Yes
LT6411IUD#PBF 3x3 QFN-16 UD I 05-08-1691 Yes
LT6411IUD#TRPBF 3x3 QFN-16 UD I 05-08-1691 Yes

LT6411 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LT6411CUD#PBF 3x3 QFN-16 C $3.39 $2.39 Yes
LT6411CUD#TRPBF 3x3 QFN-16 C $2.45 Yes
LT6411IUD#PBF 3x3 QFN-16 I $3.90 $2.75 Yes
LT6411IUD#TRPBF 3x3 QFN-16 I $2.81 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1057A LT6411 driver and LTC2249 ADC combo board, Requires DC718 $200.00
DC1108A LT6411 650 MHz Different ADC Driver $50.00
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Companion Boards

Part Number Description Price Documentation
DC718C USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) $300.00
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Click here to view our complete list of demo boards


  • Differential ADC Driver
  • Single-Ended to Differential Conversion
  • Differential Video Line Driver

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