Extract from the document. Instead of FETs, the circuit used bipolartransistors with current gains of so that offset voltage and drift are not degraded. A powerconsumption of 1 mW at low voltage is also featured. A number of novel circuits that make use. PDF , 1. The circuits discussed herein are illustrative of the versatilityof the integrated operational amplifier and provide a guide to a number of useful applications.
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The differential input voltage range can be equal to that of power supply voltage. The default input offset voltage is very low which is of magnitude 2mV. Generally, op-amps can perform mathematical operations. Consider, an motor running with a variable load.
As the load increases the current increases which in turn increases the temperature of the motor. So, our job is to shut down the system if the temperature increases beyond rated. This is the place where op amp operates as a positive comparator. Here a thermistor does the job whose resistance varies with temperature. If the temperature is to be monitored at three or four positions of the motor then LM can be used in below configuration.
An orientation example for two temperature sensing RT1 and RT2,. Above is the supply configuration for both single and dual supply connections. Subscribe to stay updated with industry's latest Electronics components and news. LM Explanation with example Consider, an motor running with a variable load. Below will be a simple circuit connection to sense temperature and control a system. Component Datasheet. Tags Op amp. Get Our Weekly Newsletter!
LM3900 AMPLIFIERS. Datasheet pdf. Equivalent
Quad Single Supply Operational Amplifiers , Inc