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17µA最大静态电流、双/四路、单电源、精密运算放大器

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主要特征

  • 17µA Max Supply Current (MAX478A/MAX479A)
  • 70µV Max Offset Voltage (MAX478A)
  • Single-Supply Operation:
    • Input Voltage Range Includes Ground
    • Output Swings to Ground While Sinking Current
    • No Pull-Down Resistors Required
  • Dual Op Amp in 8-Pin DIP/SO Package (MAX478)
  • Quad Op Amp in 14-Pin DIP/SO Package (MAX479)
  • 250pA Max Input Offset Current (MAX478A/MAX479A)
  • 0.5µV/°C Offset-Voltage Drift
  • Output Sources and Sinks 5mA Load Current

应用/用途

  • 电池或太阳能电池供电便携式仪表系统
  • 电池或太阳能电池供电远端传感器放大系统
  • 电池或太阳能电池供电卫星系统
  • 微功耗滤波器
  • 微功耗采样与保持
  • 单节Li+电池供电系统
  • 热电偶放大器

描述

The MAX478 and MAX479 are dual and quad micro-power, precision op amps available in 8-pin and 14-pin DIP and small-outline packages, respectively. Both devices feature an extremely low, 17µA max supply current per op amp, 70µV max offset voltage, 2.2µV/°C max offset voltage drift (0.5µV/°C typ), and 250pA max input offset current.

The MAX478 and MAX479 operate from a single supply. The input voltage range includes ground, and the output swings to within a few millivolts of ground, which eliminates pull-down resistors and saves power.

Both devices are optimized for single 3V and 5V supply operation, with guaranteed specifications at each supply voltage. Specifications for ±15V operation are also provided.

简化框图

MAX478、MAX479:典型工作电路 MAX478、MAX479:典型工作电路 Zoom icon

Technical Docs

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