MAX9002 - 低功耗、高速、单电源运算放大器比较器电压基准IC

MAX9002是Maxim美信半导体公司的一款放大器产品，MAX9002是低功耗、高速、单电源运算放大器比较器电压基准IC，本站介绍了MAX9002的封装应用图解、特点和优点、功能等，并给出了与MAX9002相关的Maxim元器件型号供参考。

MAX9002 - 低功耗、高速、单电源运算放大器比较器电压基准IC - 放大器 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX9000 family features the combination of a high-speed operational amplifier, a 185ns comparator, and a precision 1.230V reference. These devices operate from a single +2.5V to +5.5V supply and draw less than 500µA of quiescent current. The MAX9001/MAX9004 feature a shutdown mode that reduces supply current to 2µA and puts the outputs into a high-impedance state, making them ideal for portable and battery-powered applications.

The amplifiers in the MAX9000/MAX9001/MAX9002 are unity-gain stable with a 1.25MHz gain-bandwidth product, while the amplifiers in the MAX9003/MAX9004/MAX9005 are stable for closed-loop gains of +10V/V or greater with an 8MHz gain-bandwidth product. The input common-mode voltage extends from 150mV below the negative supply to within 1.2V of the positive supply for the amplifier, and to within 1.1V for the comparator. The amplifier and comparator outputs can swing rail-to-rail and deliver up to ±2.5mA and ±4.0mA, respectively, to an external load while maintaining excellent DC accuracy. The unique design of the comparator output stage substantially reduces switching current during output transitions, virtually eliminating power-supply glitches.

The comparator's ±2mV of built-in hysteresis provides noise immunity and prevents oscillations even with a slow-moving input signal. The MAX9000/MAX9001/MAX9003/MAX9004 have an internal 1.230V ±1% precision reference with a low 8ppm/°C temperature coefficient that can sink or source up to 1mA. The amplifier and reference are stable with capacitive loads up to 250pF and 100nF, respectively. The comparator's inverting input is internally connected to the reference output in the MAX9000/MAX9003.

关键特性

以下关键特性由Maxim美信半导体提供：

Op Amp + Comparator + Reference in Space-Saving µMAX® Package

+2.5V to +5.5V Single-Supply Voltage Range

340µA Supply Current (MAX9002/MAX9005)

Unity-Gain Stable (GBW = 1.25MHz) and Decompensated (AV > 10V/V, GBW = 8MHz) Options

Op-Amp/Comparator Outputs Swing Rail-to-Rail

Ground-Sensing Inputs for Both Op Amp and Comparator

Op Amp Stable with Capacitive Loads up to 250pF

Internal ±2mV Comparator Hysteresis

Fast 185ns Propagation-Delay Comparator

No Phase Reversal for Overdriven Inputs (Both Op Amp and Comparator)

Internal 1.230V Precision Reference (MAX9000/MAX9001/MAX9003/MAX9004)

±1% Initial Accuracy

Low 8ppm/°C Temperature Drift

Sink or Source up to 1mA

Stable for Capacitive Loads up to 100nF

热门应用

红外接收器，用于远端控制

仪表、终端与条码读卡器

遥控钥匙

光电二极管前置放大器

传感器信号检测

单电源供电过零检测器

智能读卡器

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