MAX1117:Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs

Industry's Lowest-Power ADC Comes in SOT23

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.

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
MAX1117, MAX1118, MAX1119: Typical Operating Circuit
MAX1117, MAX1118, MAX1119: Typical Operating Circuit
Applications/Uses
  • 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
DataSheet
titleDownload file
MAX1117-MAX1119 Data SheetMAX1117-MAX1119.pdf
Parametrics
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxSee Notes
MAX111782100SARSPIS.E. Only2.048--2.04848-691SOT/8$1.04 @1k
MAX1118-15.55.548SOT/8$0.81 @1k
MAX11194.096--4.09649SOT/8$1.04 @1k
Design kits & evaluation modules
Related Products
  • MAX1394:1.5V to 3.6V, 416ksps, 1-Channel True-Differential/2-Channel Single-Ended, 8-Bit, SAR ADCs
  • MAX1117:Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs
  • MAX1115:Single-Supply, Low-Power, Serial 8-Bit ADCs
  • MAX1116:Single-Supply, Low-Power, Serial 8-Bit ADCs
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1117EKAActiveSOT,;8 pin;9 mm²-40°C to +85°CNo
MAX1117EKA+ActiveSOT,;8 pin;9 mm²-40°C to +85°CLead Free
MAX1117EKA+TActiveSOT,;8 pin;9 mm²-40°C to +85°CLead Free
MAX1117EKA-TActiveSOT,;8 pin;9 mm²-40°C to +85°CNo
MAX1117-MAX1119.pdf MAX1119
Bench Characterization of ADCs Using a Low-Cost PC-Based Data-Acquisition Board MAX6341
MAX1117-MAX1119.pdf MAX1119