Single-Supply, Low-Power, Serial 8-Bit ADCs

Industry's Lowest-Power ADC Comes in SOT23

Please check latest availability status for a specific part variant.


The MAX1115/MAX1116 low-power, 8-bit, analog-to-digital converters (ADCs) feature an internal track/hold (T/H), voltage reference, VDD monitor, clock, and serial interface. The MAX1115 is specified from +2.7V to +5.5V, and the MAX1116 is specified from +4.5V to +5.5V. Both parts consume only 175µA at 100ksps.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1115) or +4.096V (MAX1116). The MAX1115/MAX1116 also feature AutoShutdown™ power-down mode which reduces power consumption to < 1µA when the device is not in use. The 3-wire serial interface directly connects to SPI™, QSPI™, and MICROWIRE™ devices without external logic. Conversions up to 100ksps are performed using an internal clock.

The MAX1115/MAX1116 are available in an 8-pin SOT23 package with a footprint that is just 30% of an 8-pin SO.
MAX1115, MAX1116: Typical Operating Circuit MAX1115, MAX1116: Typical Operating Circuit Enlarge+

Key Features

  • Single Supply
    • +2.7V to +3.6V (MAX1115)
    • +4.5V to +5.5V (MAX1116)
  • Input Voltage Range: 0 to VREF
  • Internal Track/Hold; 100kHz Sampling Rate
  • Internal Reference
    • +2.048V (MAX1115)
    • +4.096V (MAX1116)
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • Small 8-Pin SOT23 Package
  • Automatic Power-Down
  • Low Power
    • 175µA at 100ksps
    • 18µA at +3V and 10ksps
    • 1µA in Power-Down Mode


  • 4mA to 20mA Powered Remote Data Acquisition Systems
  • Battery-Powered Test Equipment
  • Low-Power, Handheld Portable Devices
  • Receive Signal Strength Indicators
  • System Diagnostics

See parametric specs for Precision ADCs (< 5Msps) (437)

Part NumberResolution
Input Chan.Conv. Rate
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
Unipolar VIN
ADCmaxnominalmaxSee Notes
MAX1115 81100SARSPIS.E. Only2.0482.04848-691
$1.06 @1k
MAX1116 4.0964.096

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX1117EVSYS: Evaluation System for the MAX1115, MAX1116, MAX1117, MAX1118, and MAX1119
Product Reliability Reports: MAX1115.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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