MAX4291
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
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Maxim Confidential
MyMaxim 订阅说明
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™).
关键特性
- 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
- 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
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