1. Products
  2. A/D Converters (ADC)
  3. Precision A/D Converters
  4. Multiplexed A/D Converters
  5. MAX1377


Features and Benefits

  • Dual, Simultaneous-Sampling, 12-Bit Successive Approximation Register (SAR) ADCs
  • 2 x 2 Mux Inputs or Two Differential Inputs
  • 1.25Msps Sampling Rate per ADC
  • Internal or External Reference
  • Excellent Dynamic Performance
    • 70dB SINAD (MAX1377)
    • 71dB SINAD (MAX1379/MAX1383)
    • 84dBc/SFDR
    • 1MHz Full-Linear Bandwidth
  • 2.7V to 3.6V Low-Power Operation (MAX1377)
    • 50mW (Normal Operation)
    • 6mW (Partial Power-Down)
    • 3µW (Full Power-Down)
  • 4.75V to 5.25V Low-Power Operation (MAX1379)
    • 90mW (Normal Operation)
    • 10mW (Partial Power-Down)
    • 5µW (Full Power-Down)
  • 4.75V to 5.25V Low-Power Operation (MAX1383)
    • 280mW (Normal Operation)
    • 2.5µW (Full Power-Down)
  • 20MHz, SPI-Compatible, 3-Wire Serial Interface User-Selectable Single (0.625Msps max) or Dual Outputs (1.25Msps max)
  • Input Range: ±10V (MAX1383), 0—VREF or ±VREF/2 (MAX1377/MAX1379)
  • Small 20-Pin TQFN Package

Product Details

The MAX1377/MAX1379/MAX1383 feature two simultaneous-sampling, low-power, 12-bit ADCs with serial interface and internal voltage reference. Fast sampling rate, low power dissipation, and excellent dynamic performance make the MAX1377/MAX1379/MAX1383 ideal for industrial process control, motor control, and RF applications.

Conversion results are available through a SPI™-/QSPI™-/MICROWIRE™-/DSP-compatible interface with independent serial digital outputs for each channel. The serial outputs allow twice as much data to be transferred at the given clock rate. The conversion results for both ADCs can also be output on a single digital output for microcontrollers (µCs) and DSPs with only a single serial input available.

The MAX1377 operates from a 2.7V to 3.6V analog supply and the MAX1379/MAX1383 operate from a 4.75V to 5.25V analog supply. A separate 1.8V to AVDD digital supply allows interfacing to low voltage logic without the use of level translators.

Two power-down modes, partial and full, allow the MAX1377/MAX1379 and MAX1383 (full power-down only) to save power between conversions. Partial power-down mode reduces the supply current to 2mA while leaving the reference enabled for quick power-up. Full powerdown mode reduces the supply current to 1µA.

The MAX1377/MAX1379 inputs accept voltages between zero and the reference voltage or ±VREF/2. The MAX1383 offers an input voltage range of ±10V, which is ideal for industrial and motor-control applications. The input to each of the ADCs supports either a true-differential input or two single-ended inputs.

The MAX1377/MAX1379/MAX1383 are available in a 20-pin TQFN package, and are specified for the automotive (-40°C to +125°C) temperature range.


  • Bill Validation
  • Communications
  • Data Acquisition
  • Motor Control
  • Portable Instruments

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Product Recommendations

MAX1377 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX1377ATP+ Material Declaration Reliability Data 20-LFCSP-5X5X0.75
MAX1377ATP+T Material Declaration Reliability Data 20-LFCSP-5X5X0.75
Wafer Fabrication Data MAX1377 Reliability Data

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Evaluation Boards

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.