Features and Benefits

  • 12-Bit Resolution on 3V Supply
  • Low Supply Current: 160µA Typ
  • Auto Shutdown to 1nA
  • Guaranteed ±3/4LSB Max DNL
  • Guaranteed 2.7V Operation
    (5V Versions Available: LTC1594/LTC1598)
  • Multiplexer:
    • 4-Channel MUX (LTC1594L)
    • 8-Channel MUX (LTC1598L)
  • Separate MUX Output and ADC Input Pins
  • MUX and ADC May Be Controlled Separately
  • Sampling Rate: 10.5ksps
  • I/O Compatible with QSPI, SPI and MICROWIRE, etc.
  • Small Package:
    • 16-Pin Narrow SO (LTC1594L)
    • 24-Pin SSOP (LTC1598L)

Product Details

The LTC1594L/LTC1598L are 3V micropower, 12-bit sampling A/D converters that feature 4- and 8-channel multiplexers, respectively. They typically draw only 160µA of supply current when converting and automatically power down to a typical supply current of 1nA between conversions. The LTC1594L is available in a 16-pin SO package and the LTC1598L is packaged in a 24-pin SSOP. Both operate on a 3V 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.

Product Recommendations

LTC1598L 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

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