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Analog Devices Inc. AD4854 1MSPS Data Acquisition System

Analog Devices AD4854 1MSPS Data Acquisition System is a 4-channel, 20-bit, 1MSPS data acquisition system (DAS) with differential inputs and a wide common-mode range. A 5V supply with flexible input buffer options powers the Analog Devices  AD4854. It features a low-drift internal reference and reference buffer. Each channel's SoftSpan range can be independently configured to match application signal swings, reducing the need for external signal conditioning. The AD4854 also uses Seamless High Dynamic Range (SHDR) technology to optimize input signal path gain for each sample, enhancing the dynamic range and minimizing noise without affecting linearity.

Features

  • Complete 20-bit data acquisition system
    • Simultaneous sampling of four internally buffered channels
    • 1MSPS per channel throughput
    • Differential, wide common-mode range inputs
    • ±75pA typical input leakage at +25°C
    • <300ns full-scale input step settling time
    • Integrated reference and reference buffer (4.096V)
    • Integrated supply decoupling capacitors
    • 57mW per channel at 1MSPS, power scales with throughput
  • Minimal external signal conditioning
  • Seamless high dynamic range
    • Per sample, per channel automatic gain ranging
    • Maintains ppm-level INL
  • 7.00mm × 7.00mm, 64-ball BGA full solution footprint
  • Per channel SoftSpan input ranges, bipolar or unipolar
    • ±40V, ±25V, ±20V, ±12.5V, ±10V, ±6.25V, ±5V, ±2.5V
    • 0V to 40V, 25V, 20V, 12.5V, 10V, 6.25V, 5V, 2.5V 
  • Rail-to-rail input overdrive tolerance
  • High performance
    • ±160μV typical (±40V range) INL
    • 97.2dB single-conversion typical (±40V range) SNR
    • 111.4dB single-conversion typical (±40V range) DR
    • -117dB typical (±40V range) THD
    • 120dB typical CMRR
  • Digital flexibility
    • SPI CMOS (0.9V to 5.25V) and LVDS serial input and output
    • Optional oversampling with 24-bit digital averaging
    • Optional offset, gain, and phase correction

Applications

  • Automatic test equipment
  • Avionics and aerospace
  • Instrumentation and control systems
  • Semiconductor manufacturing
  • Test and measurement

Functional Block Diagram

Block Diagram - Analog Devices Inc. AD4854 1MSPS Data Acquisition System

Related DAS

Analog Devices Inc. AD4853 1MSPS Data Acquisition System

4-channel, 16-bit, 1MSPS data acquisition system (DAS) with differential inputs.

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Published: 2025-01-07 | Updated: 2025-06-20