AD4082

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20-Bit, 10 MSPS, Low Noise, Low Power SAR ADC

Low Noise, Low Power, Fast Precision SAR ADC

数据手册 (Rev. 0) 产品选型表
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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

  • 20-bit resolution, no missing codes
  • Throughput: 10MSPS, 135ns conversion latency
  • Noise spectral density: 17.56nV/√Hz,−161.6dBFS/Hz
  • Low 1/f, low frequency noise (0.1Hz to 10Hz): 174nV rms
  • Low power: 58.6mW typical at 10MSPS
  • INL: ±3ppm (typ), ±6ppm (max)
  • Dynamic range: 94.7dBFS
  • SNR/THD
    • 94.4dB (typ)/−114.5dB (typ) at fIN = 1kHz
    • 93.8dB (typ)/−103dB (typ) at fIN = 1MHz
  • Easy Drive
    • 6V p-p differential input range
    • Continuous signal acquisition
    • Linearized, 5μA/MSPS input current
  • Integrated, low-drift reference buffer and decoupling
  • Integrated VCM generation
  • Digital features and data interface
    • Conversion result FIFO, 16K sample depth
    • Digital averaging filter with up to 210 decimation
  • SPI configuration
  • Configurable data interface
    • Single lane, DDR, serial LVDS, 200Mbps per lane
    • Dual lane, DDR, serial LVDS, 100Mbps per lane
    • Single/quad lane SPI data interface
  • Package
    • 49-ball, 5mm × 5mm CSP_BGA, 0.65mm pitch
    • Integrated supply decoupling capacitors
  • Operating temperature range: −40°C to +85°C

The AD4082 is a high speed, low noise, low distortion, 20-bit, Easy Drive, successive approximation register (SAR) analog-to-digital converter (ADC). Maintaining high performance (signal-to-noise and distortion (SINAD) ratio > 92dBFS) at signal frequencies in excess of 1MHz enables the AD4082 to service a wide variety of precision, wide bandwidth data acquisition applications. Simplification of the input anti-alias filter design can be accomplished by applying oversampling along with the integrated digital filtering and decimation to reduce noise and lower the output data rate for applications that do not require the lowest latency of the AD4082.

The AD4082 Easy Drive features reduce both signal chain complexity and power consumption while enabling greater channel density and flexibility in companion component selection. The product input structure was designed to minimize any input dependent signal currents, therefore reducing any converter induced settling artifacts. The continuous acquisition architecture allows settling across the entire conversion cycle, easing ADC driver settling and bandwidth requirements as compared to other high-speed data converters.

The AD4082 includes several elements that simplify data converter integration: a low drift reference buffer, low dropout (LDO) regulators to generate ADC core and digital interface supply rails, and a 16K result data first-in first out (FIFO) that can greatly reduce the load on the digital host. Additionally, critical supply and reference decoupling capacitors are integrated in the package to ensure optimum performance, simplify printed circuit board (PCB) layout, and reduce the overall solution footprint.

APPLICATIONS

  • Digital imaging
  • Cell analysis
  • Spectroscopy
  • Automated test equipment
  • High speed data acquisition
  • Digital control loops, hardware in the loop
  • Power quality analysis
  • Source measurement units
  • Electron and X-ray microscopy
  • Radar level measurement
  • Nondestructive test
AD4082
20-Bit, 10 MSPS, Low Noise, Low Power SAR ADC
AD4082 Functional Bock Diagram AD4082 Pin Configuration AD4082 Chip Illustration
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评估套件

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EVAL-AD4080-FMC

Evaluating the AD4080/AD4081/AD4082 20-Bit, 40/20 MSPS, Differential SAR ADC

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特性和优点

  • 适用于 AD4080 的功能完备的评估板
  • 分析|控制|评估（ACE）软件插件可用于设备配置、数据捕获和性能评估
  • 灵活模拟前端
  • 电源解决方案和精度参考
  • 板载时钟产生电路，可通过 ACE 软件控制采样频率
  • 兼容 FMC

产品详情

EVAL-AD4080-FMCZ 旨在演示 AD4080 性能并提供对 ACE 软件环境中有限的 AD4080 功能的访问。EVAL-AD4080-FMCZ 评估套件支持以下 AD4080 功能：

  • 低压数字信号（LVDS）数据输出接口
  • 通过串行外设接口（SPI）配置模数转换器（ADC）
  • 内部或外部生成 1.1 V 稳压电源轨
  • 采样率介于 1.25 MSPS 和 40 MSPS 之间

EVAL-AD4080-FMCZ 评估板设计用于通过现场可编程门阵列（FPGA）夹层卡（FMC）连接器与 Digilent ZedBoard 一起使用。ZedBoard 使用 Xilinx Zynq7000 片上系统（SoC），该系统运行 Analog Devices, Inc.、Kuiper Linux 和 LIBIIO，这些软件包含在评估板套件提供的 SD 卡上，以方便与 EVAL-AD4080-FMCZ 的通信，从而实现 ADC 配置和数据捕获。ZedBoard 还提供与主机 PC 和 ACE 软件插件的通信链路。
EVAL-AD4080-FMC
Evaluating the AD4080/AD4081/AD4082 20-Bit, 40/20 MSPS, Differential SAR ADC
EVAL-AD4080-FMCZ Angle View EVAL-AD4080-FMCZ Bottom View

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