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MAX9005 - 低功耗、高速、单电源运算放大器比较器电压基准IC


MAX9005 - 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


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.

  • 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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