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MAX4078：微功耗、SOT23封装、满摆幅、固定增益、放大和开环运算放大器

固定增益放大器，提高精度、节省空间

The MAX4074–MAX4078 GainAmp™ op amp family combines low-cost rail-to-rail op amps with precision internal gain-setting resistors. Factory-trimmed on-chip resistors decrease design size, cost, and layout, and provide 0.1% gain accuracy. Fixed inverting gains from -0.25V/V to -100V/V or noninverting gains from +1.25V/V to +101V/V are available. These devices operate from a single +2.5V to +5.5V supply and consume just 34µA. GainAmp amplifiers are optimally compensated for each gain version, achieving gain bandwidth (GBW) products up to 4MHz (AV = +25V/V to +101V/V). High-voltage fault protection withstands ±17V at either input without damage or excessive current draw (MAX4074/MAX4075 only). Two versions are available in this amplifier family. The MAX4076/MAX4077/MAX4078 are single/dual/quad open-loop, unity-gain-stable op amps, and the MAX4074/MAX4075 are single/dual fixed-gain op amps. The input common-mode voltage range of the open-loop amplifiers extends from 150mV below the negative supply to within 1.2V of the positive supply. The outputs can swing rail-to-rail and drive a 1kΩ load while maintaining excellent DC accuracy (MAX4074/MAX4075 only). The amplifiers are stable for capacitive loads up to 100pF. For space-critical operations, the MAX4074/MAX4076 are available in space-saving SOT23-5 packages.

关键特性 Internal Gain-Setting Resistors in SOT23 Packages (MAX4074/MAX4076) 0.1% Gain Accuracy (RF/RG) (MAX4074/MAX4075) 54 Standard Gains Available (MAX4074/MAX4075) Open-Loop, Unity-Gain-Stable Op Amps (MAX4076/MAX4077/MAX4078) Rail-to-Rail Outputs Drive 1kΩ Load +2.5V to +5.5V Single Supply 34µA Supply Current Up to 4MHz GBW Product Fault-Protected Inputs Withstand ±17V 200pA (max) Input Bias Current Stable with Capacitive Loads up to 100pF with No Isolation Resistor

MAX4074、MAX4075、MAX4076、MAX4077、MAX4078：典型工作电路 应用 蜂窝手机 无绳电话 数码相机(DIGICAM) 血糖表 GPS方案 红外接收器，用于远端控制 仪表、终端与条码读卡器 IP摄像机 遥控钥匙 低端电流检测放大器 MP3和便携式媒体播放器 光电二极管前置放大器 便携式电池供电设备 智能读卡器

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