Features and Benefits

  • 2.8Msps Conversion Rate
  • Low Power Dissipation: 14mW
  • 3V Single Supply Operation
  • 2.5V Internal Bandgap Reference can be Overdriven
  • 3-Wire Serial Interface
  • Sleep (10μW) Shutdown Mode
  • Nap (3mW) Shutdown Mode
  • 80dB Common Mode Rejection
  • ±1.25V Bipolar Input Range
  • Tiny 10-Lead MSE Package

Product Details

The LTC1403-1/LTC1403A-1 are 12-bit/14-bit, 2.8Msps serial ADCs with differential inputs. The devices draw only 4.7mA from a single 3V supply and come in a tiny 10-lead MSE package. A Sleep shutdown feature lowers power consumption to 10μW. The combination of speed, low power and tiny package makes the LTC1403-1/LTC1403A‑1 suitable for high speed, portable applications.

The 80dB common mode rejection allows users to eliminate ground loops and common mode noise by measuring signals differentially from the source.

The devices convert –1.25V to 1.25V bipolar inputs differentially. The absolute voltage swing for +AIN and –AIN extends from ground to the supply voltage.

The serial interface sends out the conversion results during the 16 clock cycles following CONV↑ for compatibility with standard serial interfaces. If two additional clock cycles for acquisition time are allowed after the data stream in between conversions, the full sampling rate of 2.8Msps can be achieved with a 50.4MHz clock.


  • Communications
  • Data Acquisition Systems
  • Uninterrupted Power Supplies
  • Multiphase Motor Control
  • Multiplexed Data Acquisition

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)

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.

Product Recommendations

LTC1403A-1 Companion Parts

Recommended µModule Isolator

Recommended ADCs

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

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.