Features and Benefits

  • 5Msps Sample Rate
  • Low Power Dissipation: 115mW
  • Single 5V Supply or ±5V Supplies
  • 71.3dB S/(N + D) and 85dB SFDR at Nyquist
  • 100MHz Full-Power Bandwidth Sampling
  • Input PGA
  • Integral Nonlinearity Error <0.35LSB
  • Differential Nonlinearity <0.25LSB
  • ±2.048V, ±1.024V and ±0.512V Bipolar Input Range
  • Out-of-Range Indicator
  • True Differential Inputs with 75dB CMRR
  • Pin-Compatible 10Msps Version (LTC1420)
  • 28-Pin Narrow SSOP Package

Product Details

The LTC1405 is a 5Msps, 12-bit sampling A/D converter that draws only 115mW from either single 5V or dual ±5V supplies. This easy-to-use device includes a high dynamic range sample-and-hold, a precision reference and a PGA input circuit.

The LTC1405 has a flexible input circuit that allows full-scale input ranges of ±2.048V, ±1.024V and ±0.512V. The input common mode range is rail-to-rail and a common mode bias voltage is provided for single supply applications. The input PGA has a digitally selectable 1x or 2x gain.

Maximum DC specs include ±1LSB INL and ±1LSB DNL over temperature. Outstanding AC performance includes 71.3dB S/(N + D) and 85dB SFDR at the Nyquist input frequency of 2.5MHz.

The unique differential input sample-and-hold can acquire single-ended or differential input signals up to its 100MHz bandwidth. The 75dB common mode rejection allows users to eliminate ground loops and common mode noise by measuring signals differentially from the source. A separate output logic supply allows direct connection to 3V components.


  • Telecommunications
  • Digital Signal Processing
  • Multiplexed Data Acquisition Systems
  • High Speed Data Acquisition
  • Spectral Analysis
  • Imaging Systems

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)

Documentation & Resources

Software & Systems Requirements

Evaluation Software

LinearLab Tools

A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.


The PScope System is a USB-based product demonstration and data acquisition system for use with high performance ADCs and signal chain receiver family. PScope allows users to evaluate the SNR, SFDR, THD, as well as other key parameters, quickly and easily.

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.

PCN-PDN Information

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Evaluation Boards

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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.