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18-Bit, 1.6Msps, Low-Power, Fully Differential SAR ADC

Fast and Low-Power 18-Bit SAR ADC

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主要特征

应用/用途

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主要特征

  • High DC/AC Accuracy Provides Better Measurement Quality
    • 18-Bit Resolution with No Missing Codes
    • ±2 LSB INL and ±0.5 LSB DNL Maximum at 18 Bits
    • 98.0dB SNR and 97.8dB SINAD at fIN = 10kHz
    • -123dB THD at fIN = 10kHz
  • High Sampling Rate SAR Architecture Enables Fast Settling and Acquisition
    • 1.6Msps Throughput with No Pipeline Delay
  • Integration Simplifies Design
    • Integrated Reference Buffers, VREF = 2.5V to 3.6V
    • ±VREF Unipolar Differential Analog Input Range
  • Scalable Ultra-Low Power Supply Reduces Power Consumption
    • 9mW at 1.6Msps
  • Flexible Low-Voltage Supplies Save Cost
    • 1.8V Analog and Digital Core Supply
    • 1.5V to 3.6V Digital Interface Supply
    • 3.3V REFVDD Reference Buffer Supply
  • Flexible, Industry-Standard Serial Interface and Small Package Reduce Size
    • SPI-/QSPI-/MICROWIRE®/DSP-Compatible
    • 20-Pin, 4mm x 4mm, TQFN Package

应用/用途

  • 自动测试设备
  • 电池供电设备
  • 数据采集系统
  • 医疗仪表
  • 过程控制与工业自动化
  • 电信
  • 测试与测量

描述

The MAX11903 is an 18-bit, 1.6Msps, single-channel, fully differential SAR ADC with internal reference buffers. The MAX11903 provides excellent static and dynamic performance with best-in-class power consumption that directly scales with throughput. The device has a unipolar differential ±VREF input range. Supplies include a 3.3V supply for the reference buffers, a 1.8V analog supply, a 1.8V digital supply, and a 1.5V to 3.6V digital interface supply.

This ADC achieves 98dB SNR and -123dB THD, guarantees 18-bit resolution with no-missing codes and 2 LSB INL (max).

The MAX11903 communicates data using a SPI-compatible serial interface. The MAX11903 is offered in a 20-pin, 4mm x 4mm, TQFN package and is specified over the -40°C to +85°C operating temperature range.

简化框图

MAX11903: Application Diagram MAX11903: Application Diagram Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心