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STD Inverting comparator with hysteresis
License: Public Domain
Mode: Editors' pick
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Update time：
2021-02-26 17:57:12
Creation time：
2017-01-04 09:07:32
Description
An example of an inverting comparator with hysteresis using the LM319.
The trip levels, REF_HI and REF_LO, are set at +/-1V but due to the
x2 input attenuation, wWith respect to the input signal, the upper and
lower trip levels are at +/-2V.
A spreadsheet for the calculation of REF_HI and REF_LO for given resistor and supply values is attached.
See also:
AN4071: Introduction to comparators, their parameters and basic applications
http://www.st.com/resource/en/application_note/dm00050759.pdf
Section 4.2 External hysteresis.
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | SIN(0V 5V 1kHz) | V1 | 2P-5.0 | 1 |
| 2 | 5 | V2,V3 | 2P-5.0 | 2 |
| 3 | LM319EE | U1 | NONE | 1 |
| 4 | 1k | R6 | R0805 | 1 |
| 5 | 100k | R4,R5,R1,R2 | R0805 | 4 |
| 6 | 200k | R3 | R0805 | 1 |
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