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Analog Devices / Maxim Integrated MAX11254 Delta-Sigma Analog-to-Digital Converter

Analog Devices Inc. MAX11254 Delta-Sigma Analog-to-Digital Converter (ADC) is a 24-bit ADC that achieves exceptional performance while consuming very low power. With sample rates for this device up to 64ksps, it allows precision DC measurements. The MAX11254 communicates via an SPI serial interface and is available in a small (5mmx5mm) TQFN package. The MAX11254 offers a 6.2nV/√Hz 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 Maxim MAX11254 to interface directly with high-impedance sources without compromising the available dynamic range.

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, and 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

Applications

  • Analog I/O for programmable logic controllers
  • Battery-powered instrumentation
  • Pressure sensors
  • Weigh scales

Additional Resources

Published: 2015-06-10 | Updated: 2023-04-14