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LM1815MX/NOPB 自适应可变磁阻传感器放大器

时间:2022-10-31 10:39发布企业:深圳市浩睿泽电子科技有限公司
联系人:罗先生电话:19854773352Q Q:

质量信息

评分Catalog
RoHS
REACH
引脚镀层/焊球材料SN
MSL 等级/回流焊峰值温度Level-1-260C-UNLIM
14-pin (D) package image

封装信息

封装 | 引脚
工作温度范围 (°C)-40 to 125
包装数量 | 包装

LM1815 的特性

  • Adaptive Hysteresis
  • Single Supply Operation
  • Ground Referenced Input
  • True Zero Crossing Timing Reference
  • Operates from 2V to 12V Supply Voltage
  • Handles Inputs from 100 mVP-P to over 120VP-P with External Resistor
  • CMOS Compatible Logic

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LM1815 的说明

The LM1815 is an adaptive sense amplifier and default gating circuit for motor control applications. The sense amplifier provides a one-shot pulse output whose leading edge coincides with the negative-going zero crossing of a ground referenced input signal such as from a variable reluctance magnetic pick-up coil.

In normal operation, this timing reference signal is processed (delayed) externally and returned to the LM1815. A Logic input is then able to select either the timing reference or the processed signal for transmission to the output driver stage.

The adaptive sense amplifier operates with a positive-going threshold which is derived by peak detecting the incoming signal and dividing this down. Thus the input hysteresis varies with input signal amplitude. This enables the circuit to sense in situations where the high speed noise is greater than the low speed signal amplitude. Minimum input signal is 150mVP-P.