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MAX11254

MAX11254

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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Overview

Description

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

Applications/Uses

  • Analog I/O for Programmable Logic Controllers
  • Automotive
  • Battery-Powered Instrumentation
  • Pressure Sensors
  • Weigh Scales

Parametric Specs

Part NumberResolution
(bits)		Input Chan.Conv. Rate
(ksps)		ADC ArchitectureData BusDiff/S.E. InputExternal VREF
(V)		External VREF
(V)		Unipolar VIN
(V)		Bipolar VIN
(±V)		SNR
(dB)		Package/PinsBudgetary
Price
ADCmaxminmaxmaxmaxSee Notes
MAX11254 24664Sigma-Delta
Microwire
QSPI
SPI
Diff. Only03.63.61.8133
TQFN/32
$4.95 @1k
See All Precision ADCs (< 5Msps) (444)
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.

Design Resources


MAX11253EVKIT: Evaluation Kit for the MAX11253 and MAX11254
MAX11254EVKIT: Evaluation Kit for the MAX11253 and MAX11254

Technical Documents

App Note 6425 The Basics of Using the MAX11254/MAX11259 24-Bit ADCs with Integrated PGA for Sensor-Rich Applications
App Note 6262 RTD Measurement System Design Essentials
App Note 6184 Using the MAX11254EVKIT as a Building Block Platform for Industrial Applications

Quality and Environmental Data

Product Reliability Reports: MAX11254.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX11254 IBIS Model

    • CAD Symbols and Footprints

  • MAX11254ATJ+
  • MAX11254ATJ+T
  • MAX11254ATJ/V+
  • MAX11254ATJ/V+T
    •

    Quality And Environmental

    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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.

    Quality Management System >
    Environmental Management System >

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    Related Resources

    Related Products

    Tools & Models

    Technical Docs

    Design Guides

    PDF Title
    Analog Signal Chain

    Reference Designs

    Events


    Belle Isle 2020
    05/29/2020 - 05/31/2020, Detroit, MI
    2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

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