LP111, LP211 and LP311 are low-power versions of the industry standard LM111, LM211, LM311. They take advantage of stable, high-value, ion-implanted resistors to perform the same function as the LM311 series, with a 30:1 reduction in power consumption but only a 6:1 slowdown in response time. They are well suited for battery-powered applications and all other applications where fast response times are not needed. They operate over a wide range of supply voltages, from ±18V down to a single 3-V supply with less than 300-µA current drain, but are still capable of driving a 25-mA load. If ordinary precautions are taken to minimize stray coupling from the output to either input or to the trim pins, the LP111, LP211, and LP311 are quite easy to apply free of oscillation. The LP111 is characterized for operation over the full military temperature range, from −55°C to +125°C, and is guaranteed to operate within specifications in this temperature range.
This document is a datasheet for the LP111, LP211, and LP311 low-power differential comparators with strobes. These devices are low-power versions of the industry-standard LM111, LM211, and LM311 series, designed for battery-powered applications where fast response times are not required. They utilize stable, high-value, ion-implanted resistors to achieve a 30:1 reduction in power consumption with only a 6:1 slowdown in response time compared to the LM series.
| Typical Power Consumption | 900 µW |
|---|---|
| Supply Voltage Range | ±15 V or Single 3 V |
| Output Drive Capability | 25 mA |
| Response Time | 1.2 µs |
| Input Offset Current (Typ) | 2 nA |
| Input Bias Current (Typ) | 15 nA |
| Common-Mode Input Range | -14.5 V to 13.5 V |
| LP111 Temperature Range | -55 °C to 125°C |
| LP211 Temperature Range | -25°C to 85°C |
| LP311 Temperature Range | 0 °C to 70°C |
| Input Offset Voltage (Typ) | 27.5 mV |
| Low-Level Output Voltage (LP111) | 0.1 V |
| Large Signal Differential Voltage Gain | 40 V/mV |
The response time is typically 1.2 µs.
Yes, they can operate from a single supply as low as 3 V.
The output drive capability is 25 mA.
Yes, they have the same pinout and are designed to be interchangeable.