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单、双、四路、1.2µA最大静态电流、单电源运算放大器

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主要特征

应用/用途

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主要特征

  • 1.2µA Max Quiescent Current per Amplifier
  • +2.5V to +10V Single-Supply Range
  • 500µV Max Offset Voltage (MAX406A/MAX409A)
  • < 0.1pA Typical Input Bias Current
  • Output Swings Rail-to-Rail
  • Input Voltage Range Includes Negative Rail

应用/用途

  • 电池供电系统
  • 无绳电话
  • 静电计放大器
  • 血糖表
  • GPS方案
  • 安全系统
  • IP摄像机
  • 医疗仪器
  • 面板表
  • pH计
  • 光电二极管前置放大器
  • 电表
  • 可编程逻辑控制器(PLC)

描述

The MAX406/MAX407/MAX409/MAX417–MAX419 are single, dual, and quad low-voltage, micropower, precision op amps designed for battery-operated systems. They feature a supply current of less than 1.2µA per amplifier that is relatively constant over the entire supply range, which represents a 15 to 20 times improvement over industry-standard micropower op amps. A unique output stage enables these op amps to operate at ultra-low supply current while maintaining linearity under loaded conditions. In addition, the output is capable of sourcing 1.8mA when powered by a 9V battery.

The common-mode input-voltage range extends from the negative rail to within 1.1V of the positive supply (for the singes, 1.2V for the duals and quads), and the output stage swings rail-to-rail. The entire family is designed to maintain good DC characteristics over the operating temperature range, minimizing the input referred errors.

The MAX406 is a single op amp with two modes of operation: compensated mode and decompensated mode. Floating BW (pin 8) or connecting it to V- internally compensates the amplifier. In this mode, the MAX406 is unity-gain stable with a 5V/ms typical slew rate and an 8kHz gain bandwidth. Connecting BW to V+ puts the MAX406 into decompensated mode with a 20V/ms typical slew rate and a 40kHz gain bandwidth (AVCL ≥ 2V/V).

The dual MAX407 and quad MAX418 are internally compensated to be unity-gain stable. The MAX409/MAX417/MAX419 single/dual/quad op amps feature 150kHz typical bandwidth, 75V/ms slew rate, and stability for gains of 10V/V or greater.

简化框图

MAX406、MAX407、MAX409、MAX417、MAX418、MAX419:典型工作电路 MAX406、MAX407、MAX409、MAX417、MAX418、MAX419:典型工作电路 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

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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