LM1815
- 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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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.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | LM1815 Adaptive Variable Reluctance Sensor Amplifier 数据表 (Rev. F) | 2013年 3月 27日 |
设计和开发
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封装 | 引脚 | 下载 |
---|---|---|
PDIP (NFF) | 14 | 查看选项 |
SOIC (D) | 14 | 查看选项 |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点
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