(Hong Kong)
Product Summary
The LM1815 is an adaptive sense amplifier and default gating circuit for motor control applications. The LM1815 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. Applications of the LM1815 are (1)position sensing with notched wheels; (2)zero crossing switch; (3)motor speed control; (4)tachometer; (5)engine testing.
Parametrics
LM1815 absolute maximum ratings: (1)Storage Temperature Range: -65°Cto a150°C; (2)Junction Temperature: 125°C; (3)Input Current : 30 mA; (4)Lead Temperature (Soldering, 10 sec.): 260°C; (5)Supply Voltage: 12V; (6)Power Dissipation: 1250 mW; (7)Operating Temperature Range: -40°Cto 125°C.
Features
LM1815 features: (1)Adaptive hysteresis; (2)Single supply operation; (3)Ground referenced input; (4)True zero crossing timing reference; (5)Operates from 2V to 12V supply voltage; (6)Handles inputs from 100 mV to over 120V with external resistor; (7)CMOS compatible logic.
Diagrams
| Image | Part No | Mfg | Description |  |
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 LM1815N/NOPB |
National Semiconductor (TI) |
Special Purpose Amplifiers |
Data Sheet |
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LM1815N |
National Semiconductor (TI) |
Special Purpose Amplifiers |
Data Sheet |
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LM1815MX/NOPB |
National Semiconductor (TI) |
Special Purpose Amplifiers |
Data Sheet |
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LM1815M/NOPB |
National Semiconductor (TI) |
Special Purpose Amplifiers ADAPTIVE VARIABLE RELUCTANCE SENSR AMP |
Data Sheet |
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LM1815M |
National Semiconductor (TI) |
Special Purpose Amplifiers |
Data Sheet |
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LM1815 |
Other |
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Data Sheet |
Negotiable |
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LM1815MX |
National Semiconductor (TI) |
Special Purpose Amplifiers |
Data Sheet |
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