回到顶部

超小型、+1.8V、微功耗、满摆幅输入/输出运算放大器

1.8V运算放大器,具有120dB开环增益,能够以0.017%的THD+N驱动2kΩ负载

产品详情

The MAX4291/MAX4292/MAX4294 family of micropower operational amplifiers operates from a 1.8V to 5.5V single supply or ±0.9V to ±2.75V dual supplies and has Rail-to-Rail input/output capabilities. These amplifiers provide a 500kHz gain-bandwidth product and 120dB open-loop voltage gain while using only 100µA of supply current per amplifier. The combination of low input offset voltage (±200µV) and high open-loop gain makes them ideal for low-power/low-voltage, high-precision portable applications.

The MAX4291/MAX4292/MAX4294 have an input common-mode range that extends to each supply rail, and their outputs swing to within 46mV of the rails with a 2kΩ load. Although the minimum operating voltage is specified at 1.8V, these devices typically operate down to 1.5V. The combination of ultra-low-voltage operation, rail-to-rail inputs/output, and low-power consumption makes these devices ideal for any portable/two-cell battery-powered system.

The single MAX4291 is offered in an ultra-small 5-pin SC70 package. The dual MAX4292 is offered in a space-saving 8-bump, 1.5mm x 1.5mm footprint, ultra chip-scale package (UCSP™).

主要特征

  • Ultra-Low Voltage Operation—Guaranteed Down to 1.8V
  • 100µA Supply Current per Amplifier
  • 500kHz Gain-Bandwidth Product
  • 120dB Open-Loop Voltage Gain (RL = 100kΩ)
  • 0.017% Total Harmonic Distortion Plus Noise (THD + N) at 1kHz
  • Rail-to-Rail Input Common-Mode Range
  • Rail-to-Rail Output Drives 2kΩ Load
  • No Phase Reversal for Overdriven Inputs
  • Unity-Gain Stable for Capacitive Loads up to 100pF
  • 200µV Input Offset Voltage (MAX4292/MAX4294)
  • Single in Small 5-Pin SC70
  • Available in Ultra-Small Packages:
    • 5-Pin SC70 (MAX4291)
    • 8-Bump UCSP (MAX4292)

应用/用途

  • 2节电池供电系统
  • 汽车传感器
  • 基站/无线基础架构
  • 电池供电应用
  • 蜂窝电话
  • 计算机:台式机、工作站和服务器
  • 计算机:主板
  • 计算机:笔记本电脑
  • 数字测量/张力计量
  • GPS方案
  • MP3坞站:中级
  • 便携式电子设备
  • 可编程逻辑控制器(PLC)
  • 传感器放大器
  • 机顶盒
  • 应变仪
Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 0.5
Input IBIAS (nA) (max) 55
VOS (µV) (max) 2500
VSUPPLY (Total) (V) (min) 1.8
VSUPPLY (Total) (V) (max) 5.5
# Amplifiers 4
Rail to Rail Input/Output
Package/Pins SOIC (N)/14
TSSOP/14
Budgetary
Price (See Notes)
$2.31 @1k
查看更多

简化框图

MAX4291、MAX4292、MAX4294:引脚配置 MAX4291、MAX4292、MAX4294:引脚配置 Zoom icon

技术文档

设计与质量

单击下面的标题以查看详情页面

/cn/design/design-tools/ee-sim.html?

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心

参量

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 0.5
Input IBIAS (nA) (max) 55
VOS (µV) (max) 2500
VSUPPLY (Total) (V) (min) 1.8
VSUPPLY (Total) (V) (max) 5.5
# Amplifiers 4
Rail to Rail Input/Output
Package/Pins SOIC (N)/14
TSSOP/14
Budgetary
Price (See Notes)
$2.31 @1k

主要特征

  • Ultra-Low Voltage Operation—Guaranteed Down to 1.8V
  • 100µA Supply Current per Amplifier
  • 500kHz Gain-Bandwidth Product
  • 120dB Open-Loop Voltage Gain (RL = 100kΩ)
  • 0.017% Total Harmonic Distortion Plus Noise (THD + N) at 1kHz
  • Rail-to-Rail Input Common-Mode Range
  • Rail-to-Rail Output Drives 2kΩ Load
  • No Phase Reversal for Overdriven Inputs
  • Unity-Gain Stable for Capacitive Loads up to 100pF
  • 200µV Input Offset Voltage (MAX4292/MAX4294)
  • Single in Small 5-Pin SC70
  • Available in Ultra-Small Packages:
    • 5-Pin SC70 (MAX4291)
    • 8-Bump UCSP (MAX4292)

应用/用途

  • 2节电池供电系统
  • 汽车传感器
  • 基站/无线基础架构
  • 电池供电应用
  • 蜂窝电话
  • 计算机:台式机、工作站和服务器
  • 计算机:主板
  • 计算机:笔记本电脑
  • 数字测量/张力计量
  • GPS方案
  • MP3坞站:中级
  • 便携式电子设备
  • 可编程逻辑控制器(PLC)
  • 传感器放大器
  • 机顶盒
  • 应变仪

描述

The MAX4291/MAX4292/MAX4294 family of micropower operational amplifiers operates from a 1.8V to 5.5V single supply or ±0.9V to ±2.75V dual supplies and has Rail-to-Rail input/output capabilities. These amplifiers provide a 500kHz gain-bandwidth product and 120dB open-loop voltage gain while using only 100µA of supply current per amplifier. The combination of low input offset voltage (±200µV) and high open-loop gain makes them ideal for low-power/low-voltage, high-precision portable applications.

The MAX4291/MAX4292/MAX4294 have an input common-mode range that extends to each supply rail, and their outputs swing to within 46mV of the rails with a 2kΩ load. Although the minimum operating voltage is specified at 1.8V, these devices typically operate down to 1.5V. The combination of ultra-low-voltage operation, rail-to-rail inputs/output, and low-power consumption makes these devices ideal for any portable/two-cell battery-powered system.

The single MAX4291 is offered in an ultra-small 5-pin SC70 package. The dual MAX4292 is offered in a space-saving 8-bump, 1.5mm x 1.5mm footprint, ultra chip-scale package (UCSP™).

简化框图

MAX4291、MAX4292、MAX4294:引脚配置 MAX4291、MAX4292、MAX4294:引脚配置 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心