12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

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The MAX1220/MAX1257/MAX1258 is a highly integrated system monitoring and control solution which includes a 16-channel (MAX1257/MAX1258) or 8-ch (MAX1220) 12-bit Analog to Digital Converter (ADC), twelve 12-bit Digital to Analog Converters (DACs), an internal reference, an internal temp sensor, a 4-bit (MAX1220) or 12-bit (MAX1257/MAX1258) GPIO port, and a 25MHz SPI-/QSPI™-/MICROWIRE®- compatible serial interface.

The MAX1220 is available in a 36-pin TQFN package. The MAX1257/MAX1258 are available in 48-pin TQFN package. All devices are specified over the -40°C to +85°C temperature range.

MAX1220, MAX1257, MAX1258: Functional Diagram MAX1220, MAX1257, MAX1258: Functional Diagram Enlarge+

Key Features

  • Reduce Parts Count and Board Space with Fully Integrated System Monitor and Controller
    • Monitors 8 (MAX1220) or 16 Voltages (MAX1257/MAX1258) Using 12-Bit, 225ksps ADC
    • Controls 8 Output Voltage Level with 12-Bit, Octal, 2µs Settling DAC with Ultra-Low Glitch Energy (4n x VS)
    • Measures Temperature with Internal ±1°C Accurate Temperature Sensor
    • Options for Using Either Internal 2.5V (MAX1257) Reference, 4.096V (MAX1220/MAX1258) Reference or External Reference
    • Includes 4 (MAX1220) or 12 (MAX1257/1258) GPIOs
  • Lower Processor Requirements and Minimize Power Consumption and Heat Dissipation
    • On-Chip FIFO, Channel-Scan Mode and Data Averaging
    • Autoshutdown Between Conversions
    • Low-Power ADC
      • 2.5mA at 225ksps
      • 22µA at 1ksps
    • Low-Power DAC: 1.5mA
    • TQFN Package with Exposed Pad
  • Enable Maximum Dynamic Range with Availability of 2 Analog Power Supply Options: +2.7V to +3.6V (MAX1257) or +4.75V to +5.25V (MAX1220/MAX1258)


  • Base-Station Control Loops
  • Controls for Optical Components
  • Data Acquisition Systems
  • System Supervision and Control

See parametric specs for Precision ADCs (< 5Msps) (434)

Part NumberResolution
Input ChannelsConv. Rate
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
External VREF
External VREF
Unipolar VIN
Bipolar VIN
ADCmaxnominalminmaxmaxmaxSee Notes
MAX1220 128300SARSPIBoth4.09615.254.0962.04870-760.5
$14.55 @1k
$18.45 @1k
MAX1258 164.0965.254.0962.048
$15.23 @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.

MAX1258EVC16: Evaluation Kit/Evaluation System for the MAX1057, MAX1058, MAX1257, and MAX1258
MAX1258EVKIT: Evaluation Kit/Evaluation System for the MAX1057, MAX1058, MAX1257, and MAX1258
Product Reliability Reports: MAX1258.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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