Features and Benefits

  • 2.2GHz –3dB Bandwidth
  • Fixed Gain of 2.5V/V (8dB)
  • –99dBc IMD3 at 70MHz (Equivalent OIP3 = 53.4dBm)
  • –61dBc IMD3 at 300MHz (Equivalent OIP3 = 34.8dBm)
  • 1nV/√Hz Internal Op Amp Noise
  • 7.6dB Noise Figure
  • Differential Inputs and Outputs
  • 400Ω Input Impedance
  • 2.85V to 3.5V Supply Voltage
  • 85mA Supply Current (255mW)
  • 1V to 1.6V Output Common Mode, Adjustable
  • DC- or AC-Coupled Operation
  • Max Differential Output Swing 4.8VP-P
  • Small 16-Lead 3mm × 3mm × 0.75mm QFN Package

Product Details

The LTC6400-8 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 LTC6400-8 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 8dB (2.5V/V).

The LTC6400-8 saves space and power compared to alternative solutions using IF gain blocks and transformers. The LTC6400-8 is packaged in a compact 16-lead 3mm × 3mm QFN package and operates over the –40°C to 85°C temperature range.


  • Differential ADC Driver
  • Differential Driver/Receiver
  • Single Ended to Differential Conversion
  • IF Sampling Receivers
  • SAW Filter Interfacing

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

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Sys-Parameter Models for Keysight Genesys

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LTC6400-8 Discussions

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Evaluation Boards Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.