Features and Benefits

  • 12-Bit Resolution
  • 500ksps Sampling Rate
  • Low Noise: SINAD = 73.3dB
  • Guaranteed No Missing Codes
  • Single 5V Supply
  • Auto-Shutdown Scales Supply Current with Sample Rate
  • Low Power:
    • 17.5mW at 500ksps
    • 0.9mW Nap Mode
    • 35µW Sleep Mode
  • Internal Reference
  • Internal 8-Channel Multiplexer
  • Internal Conversion Clock
  • SPI/MICROWIRE Compatible Serial Interface
  • Unipolar or Bipolar Input Ranges (Software Selectable)
  • Separate Output Supply OVDD (2.7V to 5.25V)
  • 24-Pin 4mm × 4mm QFN Package

Product Details

The LTC2308 is a low noise, 500ksps, 8-channel, 12-bit ADC with an SPI/MICROWIRE compatible serial interface. This ADC includes an internal reference and a fully differential sample-and-hold circuit to reduce common-mode noise. The internal conversion clock allows the external serial output data clock (SCK) to operate at any frequency up to 40MHz.

The LTC2308 operates from a single 5V supply and draws just 3.5mA at a sample rate of 500ksps. The auto-shutdown feature reduces the supply current to 200µA at a sample rate of 1ksps.

The LTC2308 is packaged in a small 24-pin 4mm × 4mm QFN. The internal 2.5V reference and 8-channel multiplexer further reduce PCB board space requirements.

The low power consumption and small size make the LTC2308 ideal for battery operated and portable applications, while the 4-wire SPI compatible serial interface makes this ADC a good match for isolated or remote data acquisition systems.


  • High Speed Data Acquisition
  • Industrial Process Control
  • Motor Control
  • Accelerometer Measurements
  • Battery Operated Instruments
  • Isolated and/or Remote 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.

Tools & Simulations


Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino


Reference Designs (2)

Product Recommendations

LTC2308 Companion Parts

Recommended µModule Isolator

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

Sample & Buy

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Buy Now Pricing

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List Pricing

(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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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.