Analog Devices Inc. ADAQ7980/ADAQ7988 μModule® Data Acquisition System

Analog Devices Inc. ADAQ7980/ADAQ7988 μModule® Data Acquisition Systems are designed as 1MSPS/500kSPS 16-bit analog-to-digital converter (ADC) μModule data acquisition systems that combine four common signal processing and conditioning blocks in a system in package (SiP) design to support a wide range of applications. The devices include a high accuracy 16-bit SAR ADC, a high bandwidth, high input impedance ADC driver, a stable reference buffer, and an efficient power management block. A configurable ADC driver feedback loop enables gain and/or common-mode adjustments. The highly integrated design ensures that the ADAQ7980/ADAQ7988 μModule Data Acquisition Systems include the most important passive components in achieving specified device performance. As a result, the devices eliminate many design challenges associated with traditional signal chains with successive approximation register (SAR) ADCs.

Analog Devices Inc. ADAQ7980/ADAQ7988’s user interface is compatible with 1.8V, 2.5V, 3V, or 5V logic. Using the SPI-/QSPI-/MICROWIRE™-/DSP-compatible serial interface, designers can daisy-chain multiple devices on a single, 3-wire bus.

Features

  • μModule data acquisition system
    • On-board ADC driver and reference buffer
    • 50% PCB area savings
    • Includes critical passive components
    • SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
    • Daisy-chain multiple ADAQ7980/ADAQ7988 devices
    • Versatile supply configuration with 1.8V/2.5V/3V/5V logic interface
    • Pseudo-differential ADC input structure
  • High performance
    • 16-bit resolution with no missing codes
    • Throughput: 1MSPS (ADAQ7980) and 500kSPS (ADAQ7988)
    • INL: ±8ppm typical and 20ppm maximum
    • SNR: 91.5dB typical at 10kHz (unity gain)
    • THD: −105dB at 10kHz
    • Zero error: ±0.06mV typical (unity gain)
    • Zero error: ±0.06mV typical (unity gain)
    • Zero error temperature drift: 1.3μV/°C maximum
  • Low-power dissipation
    • 21mW typical at 1MSPS (ADAQ7980)
    • 16.5mW typical at 500kSPS (ADAQ7988)
    • Flexible power-down modes
    • Dynamic power scaling
  • Excellent ESD Ratings
    • 3500V human body model (HDM)
    • 1250V field-induced charged device model (FICDM)
  • Wide operating temperature range: −55°C to +125°C
  • Small, 24-lead, 5mm × 4mm LGA package

Applications

  • Automated test equipment (ATE)
  • Battery powered instrumentation
  • Communications
  • Data acquisition
  • Process control
  • Medical instrument

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Functional Block Diagrams

Gepubliceerd op: 2017-05-26 | Bijgewerkt op: 2022-04-14