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Analog Devices / Maxim Integrated MAX11270 24-Bit Delta-Sigma ADC

Analog Devices MAX11270 24-Bit Delta-Sigma Analog-to-Digital Converter (ADC) is a 24-bit delta-sigma ADC that achieves excellent 130dB SNR while dissipating an ultra-low 10mW. Sample rates up to 64ksps allow both precision DC and AC measurements. Integral nonlinearity is guaranteed to 4ppm maximum. The THD is -122dB. The Analog Devices MAX11270 offers a 6.5nV/ noise programmable gain amplifier with gain settings between 1x to 128x. Optional buffers are also included to isolate the signal inputs from the switched capacitor sampling network. This allows the device to be used with high-impedance sources without compromising the available dynamic range.

Features

  • High resolution for instrumentation
  • Applications that require a wide dynamic range:
    • 130dB SNR at 1.9sps
    • 112dB SNR at 1000sps
    • 20.4-Bit Noise-Free Resolution at 1.9sps
    • 17.4-Bit Noise-Free Resolution at 1000sps
  • Longer battery life for portable applications:
  • 2.4mA operating mode current
  • 4.4mA PGA low-noise mode current
  • 1µA sleep current
  • High accuracy for DC measurements
    • 1ppm INL (typ), 4ppm (max)
  • Single or split analog supplies provide input voltage range flexibility
    • 2.7V to 3.6V (Single Supply) or ±1.8V (Split Supplies)
  • Flexible high-performance filter architecture simplifies design
    • Programmable SINC filter
  • Enables system integration
    • Low-noise PGA with gains of 1, 2, 4, 8, 16, 32, 64, and 128
    • Signal buffer optional
    • 3 general-purpose I/Os
  • Enables integrated part and system calibration for gain and offset
  • Robust 24-Pin TSSOP packaging

This Analog Devices MAX11270 24-Bit Delta-Sigma ADC communicates via an SPI-compatible serial interface and is available in a small 24-pin TSSOP package.

Applications

  • ATE
  • High-precision portable sensors
  • Medical equipment
  • Scientific instrumentation

Development Tools

Analog Devices / Maxim Integrated MAX11270EVKIT ADC Evaluation Kit

Demonstrates the MAX1127X family of 24-bit, 64ksps delta-sigma ADCs with integrated PGA. 

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Typical Application Circuit

Application Circuit Diagram - Analog Devices / Maxim Integrated MAX11270 24-Bit Delta-Sigma ADC

Block Diagram

Block Diagram - Analog Devices / Maxim Integrated MAX11270 24-Bit Delta-Sigma ADC
Publicado: 2016-10-05 | Actualizado: 2023-04-21