AD4113

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4-/8-Channel, 125kSPS, 16-Bit, Sigma Delta ADC with ±10V Inputs, Open-Wire Detection

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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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概述

  • ±10V inputs, 4 differential or 8 single-ended
    • Absolute input pin voltage up to ±20V
    • Minimum 1MΩ impedance
  • Fully integrated solution
    • 16-bit ADC with integrated AFE
    • Fast and flexible output rate: 2.5SPS to 125,000SPS
    • Channel scan data rate 24.845kSPS/channel (40.25μs settling)
      • 14.4 noise free bits at 24.845kSPS per channel
      • 16 noise free bits at 4.994kSPS per channel
    • Simultaneous 50Hz and 60Hz rejection
    • On-chip, 2.5V reference and reference buffers
      • ±5ppm/°C drift (typical)
    • Internal clock oscillator
  • Power supplies
    • AVDD = 4.5V to 5.5V or ±2.5V
    • IOVDD = 2V to 5.5V
    • Total current consumption AVDD + IOVDD (IDD) = 10.8mA
    • Temperature range: −40°C to +105°C
    • 40-lead, 6mm × 6mm LFCSP
    • 3-wire or 4-wire serial digital interface
      • SPI, QSPI, MICROWIRE, and DSP-compatible
      • Schmitt trigger on SCLK

The AD4113 is a low power, low noise, 16-bit, Σ-Δ analog-to-digital converter (ADC) that integrates an analog front end (AFE) for four fully-differential or eight single-ended inputs.

The precision performance of the AD4113 is achieved by integrating the proprietary iPassives™ technology from Analog Devices, Inc. The AD4113 has high impedance (≥1MΩ) and can accommodate ±10V true bipolar voltage inputs at a maximum channel scan rate of 24.845kSPS (40.25μs) for fully settled data. The output data rates range from 2.5SPS to 125,000SPS.

The AD4113 also integrates key analog and digital signal conditioning blocks to configure eight individual setups for each analog input channel in use. As many as 16 channels can be enabled at any time, a channel being defined as any of the standard analog voltage input. The embedded 2.5V (5ppm/°C) band gap internal reference (with output reference buffer) reduces the external component count.

The digital filter allows flexible settings, which include simultaneous 50Hz and 60Hz rejection at a 27.27SPS output data rate. The user can select between the different filter settings depending on the demands of each channel in the application. The automatic channel sequencer enables the ADC to switch through each enabled channel.

The AD4113 operates with a single 5V power supply, which makes the device easy to use in galvanically isolated applications. The specified operating temperature range is −40°C to +105°C. The AD4113 is housed in a 40-lead, 6mm × 6mm LFCSP.

APPLICATIONS

  • Process control
    • PLC/DCS modules
    • Instrumentation and measurement
AD4113
4-/8-Channel, 125kSPS, 16-Bit, Sigma Delta ADC with ±10V Inputs, Open-Wire Detection
AD4113 Functional Block Diagram AD4113 Pin Configuration AD4113 Chip Illustration
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