LM392N Comparator IC DIP-8
The LM392N is a versatile monolithic integrated circuit that contains two independent building blocks: a high-gain operational amplifier and a precision voltage comparator. This combination provides two essential analog functions in a single 8-pin package, simplifying circuit design and reducing component count. Both circuits are specifically engineered to operate efficiently from a single power supply, making them highly practical for a wide range of applications.
A key characteristic of the LM392N is its ability to operate from a single power supply over a wide voltage range, from 3V to 32V, eliminating the need for dual positive and negative supplies in many designs. The input stages of both the op-amp and the comparator are designed to common-mode down to ground level. This allows the device to sense input signals at or near the ground potential, which is a significant advantage when interfacing with sensors or signals referenced to ground in a single-supply system.
The operational amplifier is internally frequency compensated for unity gain stability and offers a wide output voltage swing. The comparator features a low output saturation voltage, ensuring its output is compatible with various logic families, including TTL and CMOS, without requiring additional interface components. Furthermore, the device exhibits a low supply current drain that remains largely independent of the supply voltage, making it exceptionally suitable for battery-operated and other power-sensitive portable equipment.
Features:
- Combines an Op-Amp and a Voltage Comparator in One Package.
- Wide Single-Supply Voltage Range: 3V to 32V.
- Operates from Split (Dual) Supplies: ±1.5V to ±16V.
- Low Supply Current Drain (600 µA Typ) – Essentially Independent of Supply Voltage.
- Input Common-Mode Voltage Range Includes Ground.
- Low Input Bias Current: 50 nA.
- Low Input Offset Voltage: 2 mV.
- Op-Amp is Internally Frequency Compensated for Unity Gain.
- Comparator Output Compatible with TTL, DTL, ECL, MOS, and CMOS Logic.
- Pin-for-Pin Compatible with LM358 (Dual Op-Amp) and LM393 (Dual Comparator).
Specifications:
| Parameter | Specification |
|---|---|
| Function: | Op-Amp + Voltage Comparator |
| Number of Circuits: | 1 Op-Amp, 1 Comparator |
| Supply Voltage (Single): | 3V to 32V |
| Supply Current: | 0.5 mA to 1 mA (at V+ = 5V) |
| Input Offset Voltage (Max): | 5 mV |
| Input Bias Current (Max): | 250 nA |
| Op-Amp Gain Bandwidth: | 1 MHz |
| Comparator Response Time: | 300 ns |
| Output Saturation Voltage: | 250 mV (at 4 mA) |
| Input Common-Mode Range: | 0V to V+ – 1.5V |
| Package: | 8-Pin PDIP |
Connection Diagram:
Applications:
- Transducer Amplifier with Pulse Shaper.
- DC Gain Block with Level Detector.
- Voltage-Controlled Oscillator (VCO).
- Conventional Op-Amp Circuits.
- Conventional Voltage Comparator Circuits.
- Portable/Battery-Powered Equipment.
Package Contents:
- 1x LM392N Comparator IC DIP-8