+5V, 1Msps, 4 and 8-Channel, 8-Bit ADCs with 1µA Power-Down

Low-Power +5V 8-bit ADCs with Parallel Interface

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The MAX114/MAX118 are microprocessor-compatible, 8-bit, 4-channel and 8-channel analog-to-digital converters (ADCs). They operate from a single +5V supply and use a half-flash technique to achieve a 660ns conversion time (1Msps). A power-down (active-low PWRDN) pin reduces current consumption typically to 1µA. The devices return from power-down mode to normal operating mode in less than 200ns, allowing large supply-current reductions in Burst Mode® applications (in Burst Mode, the ADC wakes up from a low-power state at specified intervals to sample the analog input signals). Both converters include a track/hold, enabling the ADC to digitize fast analog signals.

Microprocessor (µP) interfaces are simplified because the ADC can appear as a memory location or I/O port without external interface logic. The data outputs use latched, three-state buffer circuitry for direct connection to an 8-bit parallel µP data bus or system input port. The MAX114/MAX118 input/reference configuration enables ratiometric operation.

The 4-channel MAX114 is available in a 24-pin DIP or SSOP. The 8-channel MAX118 is available in a 28-pin DIP or SSOP. For +3V applications, refer to the MAX113/MAX117 data sheet.
MAX114, MAX118: Functional Diagram MAX114, MAX118: Functional Diagram Enlarge+

Key Features

  • Single +5V Supply Operation
  • 4 (MAX114) or 8 (MAX118) Analog Input Channels
  • Low Power:
    • 40mW (operating mode)
    • 5µW (power-down mode)
  • Total Unadjusted Error <1LSB
  • Fast Conversion Time: 660ns per Channel
  • No External Clock Required
  • Internal Track/Hold
  • 1MHz Full-Power Bandwidth
  • Internally Connected 8th Channel Monitors Reference Voltage (MAX118)


  • Communication Systems
  • High-Speed DSP
  • Portable Equipment
  • Remote Data Acquisition

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

Part NumberResolution
Input Chan.Conv. Rate
ADC ArchitectureData BusDiff/S.E. InputExternal VREF
External VREF
Unipolar VIN
ADCmaxminmaxmaxSee Notes
MAX114 841000FlashµP/8S.E. Only05549-50
$5.05 @1k
MAX118 870
$5.21 @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.
Product Reliability Reports: MAX118.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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