LTC6409 - 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver


  • 10GHz Gain-Bandwidth Product
  • 88dB SFDR at 100MHz, 2VP-P
  • 1.1nV/√Hz Input Noise Density
  • Input Range Includes Ground
  • External Resistors Set Gain (Min 1V/V)
  • 3300V/μs Differential Slew Rate
  • 52mA Supply Current
  • 2.7V to 5.25V Supply Voltage Range
  • Fully Differential Input and Output
  • Adjustable Output Common Mode Voltage
  • Low Power Shutdown
  • Small 10-Lead 3mm × 2mm × 0.75mm QFN Package

Typical Application

LTC6409 Typical Application
LTC6409 Typical Application


The LTC6409 is a very high speed, low distortion, differential amplifier. Its input common mode range includes ground, so that a ground-referenced input signal can be DC-coupled, level-shifted, and converted to drive an ADC differentially.

The gain and feedback resistors are external, so that the exact gain and frequency response can be tailored to each application. For example, the amplifier could be externally compensated in a no-overshoot configuration, which is desired in certain time-domain applications.

The LTC6409 is stable in a differential gain of 1. This allows for a low output noise in applications where gain is not desired. It draws 52mA of supply current and has a hardware shutdown feature which reduces current consumption to 100μA.

The LTC6409 is available in a compact 3mm × 2mm 10‑pin leadless QFN package and operates over a –40°C to 125°C temperature range.


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


LTC6409 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC6409CUDB#PBF QFN 10 C $6.39 View
LTC6409CUDB#TRMPBF QFN 10 C $6.34 $4.55 View
LTC6409CUDB#TRPBF QFN 10 C $4.50 View
LTC6409HUDB#PBF QFN 10 H $7.96 View
LTC6409HUDB#TRMPBF QFN 10 H $7.91 $5.68 View
LTC6409HUDB#TRPBF QFN 10 H $5.63 View
LTC6409IUDB#PBF QFN 10 I $7.02 View
LTC6409IUDB#TRMPBF QFN 10 I $6.97 $5.00 View
LTC6409IUDB#TRPBF QFN 10 I $4.95 View
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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
DC1591A LTC6409 | 10GHz, 1nV/rt(Hz) Differential Amplifier/ADC Driver $150.00
DC1760A LTC2261-14 + LTC6409 ADC and Driver Combo Board,DC-100MHz, CMOS Outputs, req DC890 and DC1075 $200.00
DC1945A LTC2185 and LTC6409 Combo Board with differential inputs, req DC890, LVDS_XFMR and DC1075 $200.00
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Companion Boards

Part Number Description Price Documentation
DC1075A Clock Divider board $50.00
DC890B USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS) $300.00
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Click here to view our complete list of demo boards


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