24-Bit, 6-Channel, 16ksps, 6.2nV/√Hz PGA, Delta-Sigma ADC with I²C Interface

24-Bit Delta-Sigma ADC Offers 10x Less Power with Superior Noise Performance

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The MAX11259 is a 6-channel, 24-bit delta-sigma ADC that achieves exceptional performance while consuming very low power. Sample rates up to 16ksps allow precision DC measurements. The MAX11259 communicates via an I2C-compatible serial interface and is available in a small (3mm x 3mm) WLP package.

The MAX11259 offers a 6.2nV/ noise programmable gain amplifier (PGA) with gain settings from 1x to 128x. The integrated PGA provides isolation of the signal inputs from the switched capacitor sampling network. The PGA also enables the MAX11259 to interface directly with high-impedance sources without compromising available dynamic range.

The MAX11259 operates from a single 2.7V to 3.6V analog supply, or split ±1.8V analog supplies, allowing the analog input to be sampled below ground. The digital supply range is 1.7V to 2.0V or 2.0V to 3.6V, allowing communication with 1.8V, 2.5V, 3V, or 3.3V logic.
MAX11259: Functional Diagam MAX11259: Functional Diagram Enlarge+

Key Features

  • High Resolution for Industrial Applications that Require a Wide Dynamic Range
    • 133dB SNR at 50sps
    • 124dB SNR at 1000sps
  • Longer Battery Life for Portable Applications
    • 2.2mA Operating Mode Current
    • 1µA Sleep Current
  • Single or Split Analog Supplies Provide Input Voltage Range Flexibility
    • 2.7V to 3.6V (Single Supply) or ±1.8V (Split Supply)
  • Enables System Integration
    • Low Noise, 6.2nV/√Hz PGA with Gains of 1, 2, 4, 8, 16, 32, 64, 128
    • 6-Channel, Fully Differential Input
  • Enables On-Demand Device and System Gain and Offset Calibration
    • User-Programmable Offset and Gain Registers
  • Robust Performance in a Small Package
    • -40°C to +125°C Operating Temperature Range
    • WLP Package, 3mm x 3mm


  • Battery-Powered Instrumentation
  • Pressure Sensors
  • Wearable Electronics
  • Weigh Scales

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
Bipolar VIN
ADCmaxminmaxmaxmaxSee Notes
MAX11259 24616Sigma-DeltaI2CDiff. Only03.63.61.8133
$4.15 @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.

MAX11259PMB: Evaluation Kit for the MAX11259
USB2PMB2: Adapter Board for the Munich (USB2PMB2#)

Tools & Models

  • MAX11259 IBIS Model
  • Request Reliability Report for: MAX11259 
    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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