AD8137

低成本、低功耗差分ADC驱动器
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产品详情

AD8137是一款低成本差分驱动器,提供轨到轨输出,非常适合在要求低功耗和低成本的系统中驱动模数转换器(ADC)。 它应用简便,内部共模反馈架构允许通过在一个引脚上施加电压来控制输出共模电压。 内部反馈环路也可提供内在平衡的输出,并能抑制偶数阶谐波失真产物。 利用AD8137很容易实现完全差分和单端至差分增益配置。 由四个电阻组成的外部反馈网络决定放大器的闭环增益。 省电特性对关键的低功耗应用很有利。

AD8137采用ADI公司专有的第二代XFCB工艺制造,可实现高性能和极低的功耗水平。

AD8137提供8引脚小型SOIC封装和3 mm x 3 mm LFCSP封装。 该器件的额定工作范围为−40°C至+125°C扩展工业温度范围。

应用
  • ADC驱动器
  • 便携式仪器仪表
  • 电池供电应用
  • 单端转差分转换器
  • 差分有源滤波器
  • 视频放大器
  • 电平转换器

产品生命周期

checked 量产

该产品系列中至少有一个型号已量产并可供采购。该产品适合用于新设计,但也可能有更新的替代产品。

替代器件

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产品详情

这些评估板设计用来帮助用户评估AD8137。评估板为裸板,板上未焊接任何器件或放大器。这些器件必须另外购买,详见下表或产品页面。用户也可以申请免费样片。利用未搭载器件的评估板,用户可以快速定制各种运算放大器电路并进行原型开发,从而最大程度地降低风险,并缩短产品上市时间。

“用户指南”包含构建电路板所需的全部文档,包括原理图、装配图和材料清单。

EVAL-FMCMOTCON2 电路图

产品详情

The AD-FMCMOTCON2-EBZ is a complete high performance servo system on an FPGA Mezzanine Card (FMC) board, the purpose of which is to provide a complete motor drive system demonstrating efficient and high dynamic control of three phase PMSM and induction motors up to 48V and 20A.

Two motors can be driven at the same time, each motor having its separate power supply. The system incorporates high quality power sources; reliable power, control, and feedback signals isolation; accurate measurement of motor current & voltage signals; high speed interfaces for control signals to allow fast controller response; industrial Ethernet high speed interfaces; single ended Hall, differential Hall, encoder and resolver interfaces; digital position sensors interface; flexible control with a FPGA/SoC interface.

The kit consists of two boards: a controller board and a drive board. An optional AD-DYNO2-EBZ dynamometer can also be purchased through Avnet and is intended to be an extension of the drive system.

Controller Board

  • Digital board for interfacing with the low and high voltage drive boards
  • Compatible with all Xilinx FPGA platforms with FMC LPC or HPC connectors
  • FMC signals voltage adaptation interface for seamless operation on all FMC voltage levels
  • Fully isolated digital control and feedback signals
  • Isolated Xilinx XADC interface
  • 2 x Gbit Ethernet PHYs for high speed industrial communication, with 3rd party EtherCAT support
  • Single ended Hall, Differential Hall, Encoder, Resolver interfaces
  • Digital sensors interfaces
    • EnDat
    • BISS Interface

Drive Board

  • Drives motors up to 48V @ 20A
  • Drives 2 motors simultaneously
  • High frequency drive stage implemented with ADI isolated gate drivers
  • Supported motor types
    BLDC
    PMSM
    Brushed DC
    Stepper (bipolar / unipolar)
  • Integrated over current protection
  • Reverse voltage protection
  • Current and Voltage measurement using isolated ADCs
  • BEMF zero cross detection for sensorless control of PMSM or BLDC motors
  • Separate voltage supplies for the 2 motors so that the motors don't influence each other

Dynamometer System with Embedded Control

  • Two BLDC motors connected by a rigid couple in a dyno setup, which can be used to test real-time motor control performance.
  • One BLDC motor acts as an electronically adjustable load and is driven by the embedded control system. This motor can be directly connected to the FMC motor drive to get complex / active loads. The load can be driven also by the AD-FMCMOTCON2-EBZ to implement dynamic load profiles.
  • The other BLDC motor is driven by the FMC motor drive.
  • Measurement and display of load motor current
  • Measurement and display of load motor speed
  • External control using Analog Discovery and MathWorks Instrumentation Control Toolbox

Software:

Example reference designs showing how to use the platform with Xilinx® FPGAs or SoCs and high performance control algorithms from Mathworks® are provided together with the hardware. Information on the FMC board, and how to use it, the design package that surrounds it, and the software which can make it work, can be found by clicking the software link.

文档

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SPICE模型

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AD8137 材料声明
PCN-PDN信息 质量和可靠性 原理图符号和PCB封装

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购买评估板 所示报价为单片价格
所示报价为单片价格。所列的美国报价单仅供预算参考,指美元报价(每片美国离岸价),如有修改恕不另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。