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The LM111-N, LM211-N and LM311-N are voltage comparators that have input currents nearly a thousand times lower than devices like the LM106 or LM710. They are also designed to operate over a wider range of supply voltages: from standard ±15V op amp supplies down to the single 5V supply used for IC logic. Their output is compatible with RTL, DTL and TTL as well as MOS circuits. Further, they can drive lamps or relays, switching voltages up to 50V at currents as high as 50 mA.
Both the inputs and the outputs of the LM111-N, LM211-N or the LM311-N can be isolated from system ground, and the output can drive loads referred to ground, the positive supply or the negative supply. Offset balancing and strobe capability are provided and outputs can be wire OR'ed. Although slower than the LM106 and LM710 (200 ns response time vs 40 ns) the devices are also much less prone to spurious oscillations. The LM111-N has the same pin configuration as the LM106 and LM710.
The LM211-N is identical to the LM111-N, except that its performance is specified over a −25°C to +85°C temperature range instead of −55°C to +125°C. The LM311-N has a temperature range of 0°C to +70°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LM111/LM211/LM311 Voltage Comparator datasheet (Rev. E) | Mar 27, 2013 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | Mar 28, 2017 | |
| Application note | AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) | May 6, 2013 | ||
| Application note | AN-298 Isolation Techniques for Signal Conditioning (Rev. B) | May 6, 2013 | ||
| Application note | AN-288 System-Oriented DC-DC Conversion Techniques (Rev. B) | May 6, 2013 | ||
| Application note | Intro MF10 - Versatile Mono Active Filter Building Blk (Rev. C) | Apr 23, 2013 | ||
| Application note | AN-263 Sine Wave Generation Techniques (Rev. C) | Apr 22, 2013 | ||
| Application note | Circuit Techniques for Avoiding Oscillations in Comparator Applications | Oct 2, 2002 |
For additional terms or required resources, click any title below to view the detail page where available.
The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| PDIP (P) | 8 | Ultra Librarian |
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