MIC841LBC5-TR

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Linear-Comparators

Comparators are simpler and faster than their counterparts, the analog-to-digital converters (ADCs). A typical application of a comparator is to compare an input voltage to a reference voltage and output a logic signal based on the result. The MIC841LBC5-TR is one such linear-comparator from Micrel Semiconductor. It is a low power, low total harmonic distortion, low-noise linear-comparator housed in an 8-lead SOT-23 package.

Features of the MIC841LBC5-TR

Some of the main features of the linear-comparator are:

• The input common-mode range is 1.8V to 8V
• Operating supply voltage range is 2.7V to 12V
• Operating temperature range is 40°C to +85°C
• Operating rate is up to 1MHz
• High Accuracy: 0.3%
• Low Current Consumption: 22µA
• Low Noise and Distortion

Application Fields

The MIC841LBC5-TR linear-comparator can be used in a variety of applications, and it is particularly suitable for the following:

• Signal Sampling and Detection
• Battery Charger Control
• Voltage Limiting
• High-Voltage Switching
• Data Conversion
• Analog Signal Decision

Working Principle

The MIC841LBC5-TR linear-comparator has two inputs - the signal input and the reference input. Both inputs are compared and the output signal will be either HIGH or LOW depending on the relative voltages at the two inputs. A signal HIGH will be output if the signal input is higher than the reference voltage, and a signal LOW will be output if the signal input is lower than the reference voltage.

The linear-comparator can be connected in various configurations. If the two inputs are connected to the same voltage source, the output will be stuck at either of the two possible values - high or low, depending on the polarity of the voltage applied to the inputs. Similarly, if the two inputs are connected to different voltage sources, the output will be HIGH if the signal input voltage is higher than the reference input voltage, and LOW if the signal input voltage is lower than the reference input voltage.

The linear-comparator can be used as a voltage detector or a voltage limit detector. If the signal input is connected to a voltage source, the comparator can be used to detect voltage levels above or below a reference voltage. If the signal input voltage is higher than the reference voltage, the output will be HIGH, and if the signal input voltage is lower than the reference voltage, the output will be LOW. This is useful for situations when a voltage limit needs to be detected.

The linear-comparator can also be used as a signal selector, if the signal input is connected to an analog signal source. If the signal source is an AC signal, the comparator can be used to select the portions of the signal that are lower or higher than a certain value. This can be useful for applications such as signal filtering and demodulation.

Conclusion

The MIC841LBC5-TR is a low power, low-noise linear-comparator which can be used in a variety of applications. It is best suited to applications such as signal sampling and detection, voltage limiting, signal selection, data conversion and analog signal decision. It is an ideal choice for applications where low power, low noise and high speed are important considerations and its 0.3% accuracy makes it a reliable choice.

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