Overview

Features and Benefits

  • Fully Differential Input and Output
  • Low Noise: 1.5nV/√Hz RTI
  • Very Low Distortion:
    • LTC6404-1 (2VP-P , 10MHz): –91dBc
    • LTC6404-2 (2VP-P , 10MHz): –96dBc
    • LTC6404-4 (2VP-P , 10MHz): –101dBc
  • Closed-Loop –3dB Bandwidth: 600MHz
  • Slew Rate: 1200V/μs (LTC6404-4)
  • Adjustable Output Common Mode Voltage
  • Rail-to-Rail Output Swing
  • Input Range Extends to Ground
  • Large Output Current: 85mA (Typ)
  • DC Voltage Offset < 2mV (Max)
  • Low Power Shutdown
  • Tiny 3mm × 3mm × 0.75mm 16-Pin QFN Package

Product Details

The LTC6404 is a family of AC precision, very low noise, low distortion, fully differential input/output amplifiers optimized for 3V, single supply operation.

The LTC6404-1 is unity-gain stable. The LTC6404-2 is designed for closed-loop gains greater than or equal to 2V/V. The LTC6404-4 is designed for closed-loop gains greater than or equal to 4V/V. The LTC6404 closed-loop bandwidth extends from DC to 600MHz. In addition to the normal unfiltered outputs (OUT+ and OUT), the LTC6404 has a built-in 88.5MHz differential single-pole lowpass filter and an additional pair of filtered outputs (OUTF+, OUTF). An input referred voltage noise of 1.5nV/√Hz make the LTC6404 able to drive state-of-the-art 16-/18-bit ADCs while operating on the same supply voltage, saving system cost and power. The LTC6404 is characterized, and maintains its performance for supplies as low as 2.7V and can operate on supplies up to 5.25V. It draws only 27.3mA, and has a hardware shutdown feature which reduces cur- rent consumption to 250μA.

The LTC6404 family is available in a compact 3mm × 3mm 16-pin leadless QFN package and operates over a –40°C to 125°C temperature range.

Applications

  • Differential Input A/D Converter Driver
  • Single-Ended to Differential Conversion/Amplification
  • Common Mode Level Translation
  • Low Voltage, Low Noise, Signal Processing

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 (7)

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

LTspice

Models for the following parts are available in LTspice:

LTC6404-1
LTC6404-2
LTC6404-4

Product Recommendations

LTC6404 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Evaluation Boards Pricing displayed is based on 1-piece.
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.