LM211QD Voltage Comparator Overview

LM211QD symbolLM211QD footprintLM211QD 3D Model

• Fast Response Time: 165 ns

• Strobe Capability

• Maximum Input Bias Current: 300 nA

• Maximum Input Offset Current: 70 nA

• Can Operate From Single 5-V Supply

• Available in Q-Temp Automotive

– High-Reliability Automotive Applications

– Configuration Control and Print Support

– Qualification to Automotive Standards

• On Products Compliant to MIL-PRF-38535, All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters.

LMx11 Feature Description

LMx11 consists of a PNP input stage to sense voltages near VCC–. It also contains balance and strobe pins forexternal offset adjustment or trimming.

The input stage is followed by a very high gain stage for the very fast response after a voltage difference on the input pins has been sensed.

This is then followed by the output stage that consists of an open collector NPN (pulldown or low-side) transistor.

Unlike most open-drain comparators, this NPN output stage has an isolated emitter from VCC–, allowing this device to set the VOL output value for collector output.

The characteristics of this high-gain LM211QD comparator circuit from Texas Instruments allow it to compare input voltages or currents. It has an open collector/emitter output. Its typical dual supply voltage is ±3|±5|±9|±12 V, with a minimum of ±1.75 V and maximum of ±15 V. This comparator has a minimum operating temperature of -40 °C and a maximum of 125 °C. This device uses one or two power supplies. This device is made with bipolar technology. It has a single channel per chip. 

The output levels are compatible with most TTL and MOS circuits. The LM111, LM211, and LM311 devices comparators are capable of driving lamps or relays and switching voltages up to 50 V at 50 mA. All inputs and outputs can be isolated from the system ground. The outputs can drive loads referenced to ground, VCC+ or VCC−. Offset balancing and strobe capabilities are available, and the outputs can be wire-OR connected. If the strobe is low, the output is in the off state, regardless of the differential input.

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Download datasheets and manufacturer documentation for Texas Instruments LM211QD.