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LM393ADR

TILM393ADR

Texas Instruments
Analog Comparators Dual Diff A Grade A 595-LM393AD A 595-LM A 595-LM393AD
NRND25,271 in stock
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Overview

The LM393ADR is a dual independent precision voltage comparator featuring a high-accuracy differential input stage. This A-grade variant offers tighter offset voltage specifications than the standard LM393, making it suitable for sensitive analog threshold detection. It is designed to operate from a single power supply over a wide range of voltages or from split supplies.

Why Choose This Part

The LM393ADR features an open-collector output that allows for easy level shifting and wired-OR logic configurations. Its low input bias current and low offset voltage improve accuracy in high-impedance sensing applications. The wide common-mode input range includes ground, facilitating single-supply operation in 3.3V and 5V systems.

Applications

Limit Comparators
Monitoring sensor voltages against fixed reference levels to trigger system interrupts or alarms.
Zero-Crossing Detectors
Identifying the point where an AC signal crosses the ground reference for timing or phase control.
Oscillators
Generating square wave signals in low-frequency timing circuits using simple RC feedback networks.
Battery Voltage Monitors
Detecting undervoltage or overvoltage conditions in portable electronics and power management units.

Getting Started

To use the LM393ADR, connect the open-collector output to your logic supply voltage via a pull-up resistor, typically 1k to 10k ohms. Ensure the input signals remain within the common-mode range, which extends to ground even when powered by a single supply. For rapid prototyping, use an SOIC-8 to DIP adapter board to interface with standard breadboards.

Also Consider

LM393DR TITexas Instruments - This is the standard grade version for cost-sensitive applications where higher input offset voltage is acceptable.
LM2903DR TITexas Instruments - Designed for automotive and industrial environments with a wider rated operating temperature range.

Categories

Analog ICs > Comparators