Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs

Industry's Lowest-Power ADC Comes in SOT23

Please check latest availability status for a specific part variant.


The MAX1117/MAX1118/MAX1119 low-power, 8-bit, dual-channel, analog-to-digital converters (ADCs) feature an internal track/hold (T/H) voltage reference (MAX1117/MAX1119), clock, and serial interface. The MAX1118 is specified from +2.7V to +5.5V and consumes only 135µA at 100ksps. The MAX1117 is specified from +2.7V to +3.6V, and the MAX1119 is specified from +4.5V to +5.5V, each consumes only 175µA at 100ksps.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1117) or +4.096V (MAX1119), or by an externally applied reference ranging from +1V to VDD (MAX1118). All devices feature an automatic shutdown mode that reduces supply current 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 MAX1117/MAX1118/MAX1119 are available in an 8-pin SOT23 package with a footprint that is only 11% of an 8-pin plastic DIP.
MAX1117, MAX1118, MAX1119: Typical Operating Circuit MAX1117, MAX1118, MAX1119: Typical Operating Circuit Enlarge+

Key Features

  • Single Supply
    • +2.7V to +3.6V (MAX1117)
    • +2.7V to +5.5V (MAX1118)
    • +4.5V to +5.5V (MAX1119)
  • Internal Track/Hold: 100kHz Sampling Rate
  • Internal Reference
    • +2.048V (MAX1117)
    • +4.096V (MAX1119)
  • Reference Input Range: 0 to VDD (MAX1118)
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • Small 8-Pin SOT23 Package
  • Automatic Power-Down
  • Analog Input Range: 0 to VREF
  • Low Power
    • 175µA at 100ksps (typ) (MAX1117/MAX1119)
    • 135µA at 100ksps (typ) (MAX1118)
    • 18µA at 10ksps (typ)
    • 1µA (typ) 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
  • Solar-Powered Remote Systems
  • System Diagnostics

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

Part NumberResolution
Input Chan.Conv. Rate
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
External VREF
External VREF
Unipolar VIN
ADCmaxnominalminmaxmaxSee Notes
MAX1117 82100SARSPIS.E. Only2.048--2.04848-691
$1.09 @1k
MAX1118 -15.55.548
$0.85 @1k
MAX1119 4.096--4.09649
$1.21 @1k

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
Request Reliability Report for: MAX1118 
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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