24-Bit, 6-Channel, 64ksps, 6.2nV/√Hz PGA, Delta-Sigma ADC with SPI Interface

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

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The MAX11254 is a 6-channel, 24-bit delta-sigma ADC that achieves exceptional performance while consuming very low power. Sample rates up to 64ksps allow precision DC measurements. The MAX11254 communicates via a SPI serial interface and is available in a small (5mm x 5mm) TQFN package.

The MAX11254 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 MAX11254 to interface directly with high-impedance sources without compromising available dynamic range.

The MAX11254 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.

Design Solution: Automotive Touch-Screen Sensing: It’s All About Your ADC ›

MAX11254: Functional Diagram MAX11254: 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
    • TQFN Package, 5mm x 5mm
  • AEC-Q100 Qualified, Refer to Ordering Information for List of /V Parts


  • Analog I/O for Programmable Logic Controllers
  • Automotive
  • Battery-Powered Instrumentation
  • Pressure Sensors
  • 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
MAX11254 24664Sigma-Delta
Diff. Only03.63.61.8133
$5.20 @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.

MAX11253EVKIT: Evaluation Kit for the MAX11253 and MAX11254
MAX11254EVKIT: Evaluation Kit for the MAX11253 and MAX11254
Product Reliability Reports: MAX11254.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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