Features and Benefits

  • 12-Bit Resolution
  • Auto Shutdown to 1nA
  • Low Supply Current: 320µA
  • Guaranteed ±3/4LSB Max DNL
  • Single Supply 5V Operation (3V Versions Available: LTC1594L/LTC1598L)
  • Multiplexer:
    • 4-Channel MUX (LTC1594)
    • 8-Channel MUX (LTC1598)
  • Separate MUX Output and ADC Input Pins
  • MUX and ADC May Be Controlled Separately
  • Sampling Rate: 16.8ksps
  • I/O Compatible with QSPI, SPI, and MICROWIRE, etc.
  • Small Package:
    • 16-Pin Narrow SO (LTC1594)
    • 24-Pin SSOP (LTC1598)

Product Details

The LTC1594/LTC1598 are micropower, 12-bit sampling A/D converters that feature 4- and 8-channel multiplexers, respectively. They typically draw only 320µA of supply current when converting and automatically power down to a typical supply current of 1nA between conversions. The LTC1594 is available in a 16-pin SO package and the LTC1598 is packaged in a 24-pin SSOP. Both operate on a 5V supply. The 12-bit, switched-capacitor, successive approximation ADCs include a sample-and-hold.

On-chip serial ports allow efficient data transfer to a wide range of microprocessors and microcontrollers over three or four wires. This, coupled with micropower consumption, makes remote location possible and facilitates transmitting data through isolation barriers.

The circuit can be used in ratiometric applications or with an external reference. The high impedance analog inputs and the ability to operate with reduced spans (to 1.5V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages.


  • Pen Screen Digitizing
  • Battery-Operated Systems
  • Remote Data Acquisition
  • Isolated Data Acquisition
  • Battery Monitoring
  • Temperature Measurement

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)

Product Recommendations

LTC1598 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.

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The USA 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. sales office or 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.