MC34074P Operational Amplifier

Updated: 2026-09-11

Overview

The MC34074P is a monolithic operational amplifier designed for general-purpose and precision applications. It combines low noise performance with high gain and bandwidth, making it ideal for analog signal processing. Manufactured using bipolar technology, it offers stable operation across a wide temperature range. Commonly available in PDIP (Plastic Dual In-line Package) and SOIC (Small Outline Integrated Circuit) packages, the MC34074P is widely used in industrial, automotive, and consumer electronics. Its robust design ensures reliability in demanding environments.

Structure and Working Principle

The MC34074P consists of a differential input stage, gain stage, and output stage. The input stage amplifies the voltage difference between its two inputs, while the gain stage provides high open-loop gain. The output stage delivers the amplified signal with low distortion. Internally, the op-amp includes frequency compensation to ensure stability. It operates on a single or dual power supply, typically ranging from ±3V to ±18V. The device's internal architecture minimizes offset voltage and bias current, enhancing accuracy.

Key Features

The MC34074P offers a slew rate of 13V/µs and a gain bandwidth product of 4.5MHz, enabling fast signal processing. Its low input bias current (30nA max) and offset voltage (2mV max) ensure precision in sensitive applications. Additional features include short-circuit protection and a wide operating temperature range (-40°C to +85°C). These characteristics make it suitable for use in harsh environments, such as automotive or industrial settings.

Application Areas

The MC34074P is commonly used in active filters, integrators, and voltage followers. Its low noise performance makes it ideal for audio amplifiers and medical instrumentation. In industrial systems, it serves in motor control and sensor signal conditioning. Other applications include analog-to-digital converters (ADCs), waveform generators, and power supply control circuits. Its versatility and reliability have made it a staple in electronic design for decades.

Maintenance and Precautions

To ensure longevity, avoid exposing the MC34074P to voltages beyond its rated limits. Proper PCB layout techniques, such as grounding and decoupling, are essential to minimize noise and oscillation. Heat dissipation should be considered in high-power applications. Using a heatsink or selecting a package with better thermal performance (e.g., SOIC) can prevent thermal shutdown or damage.

B2B Procurement Guide

When sourcing the MC34074P, verify the supplier's authenticity to avoid counterfeit components. Bulk purchases (e.g., reels or tubes) often reduce per-unit costs. Check lead times, as availability may vary. For custom requirements, consult manufacturers or authorized distributors for datasheets and application notes. Ensure compliance with RoHS or other regulatory standards if applicable.