MAX992
高速、微功耗、低电压、SOT23封装、满摆幅输入/输出比较器
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The MAX987/MAX988/MAX991/MAX992/MAX995/ MAX996 single/dual/quad micropower comparators feature low-voltage operation and rail-to-rail inputs and outputs. Their operating voltage ranges from +2.5V to +5.5V, making them ideal for both 3V and 5V systems. These comparators also operate with ±1.25V to ±2.75V dual supplies. They consume only 48µA per comparator while achieving a 120ns propagation delay.Input bias current is typically 1.0pA, and input offset voltage is typically 0.5mV. Internal hysteresis ensures clean output switching, even with slow-moving input signals.
The output stage's unique design limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX987/MAX991/MAX995 have a push-pull output stage that sinks as well as sources current. Large internal output drivers allow rail-to-rail output swing with loads up to 8mA. The MAX988/MAX992/MAX996 have an open-drain output stage that can be pulled beyond VCC to 6V (max) above VEE. These open-drain versions are ideal for level translators and bipolar to single-ended converters.
The single MAX987/MAX988 are available in tiny 5-pin SC70 packages, while the dual MAX991/MAX992 are available in ultra-small µMAX® package.
关键特性
- 120ns Propagation Delay
- 48µA Quiescent Supply Current
- +2.5V to +5.5V Single-Supply Operation
- Common-Mode Input Voltage Range Extends 250mV Beyond the Rails
- Push-Pull Output Stage Sinks and Sources 8mA Current (MAX987/MAX991/MAX995)
- Open-Drain Output Voltage Extends Beyond VCC (MAX988/MAX992/MAX996)
- Unique Output Stage Reduces Output Switching Current, Minimizing Overall Power Consumption
- 100µA Supply Current at 1MHz Switching Frequency
- No Phase Reversal for Overdriven Inputs
- Available in Space-Saving Packages:
- 5-Pin SC70 (MAX987/MAX988)
- 8-Pin µMAX (MAX991/MAX992)
应用
- 数字线接收器
- 地/电源检测
- IR接收器
- 电平转换器
- 移动通信
- 便携式电池供电系统
- 门限检测器
- 窗比较器
- 过零检测器
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