OPA211AID

Product Overview

Category: Integrated Circuit (IC)

Use: The OPA211AID is a precision operational amplifier designed for high-performance audio applications. It offers low noise, low distortion, and high output current capability, making it suitable for use in audio amplifiers, professional audio equipment, and high-fidelity audio systems.

Characteristics: - Low noise: The OPA211AID features a low input voltage noise density, ensuring minimal interference with the audio signal. - Low distortion: With a low total harmonic distortion (THD), the OPA211AID maintains the integrity of the audio signal. - High output current capability: The amplifier can deliver a significant amount of current to drive various loads, enabling it to power speakers and headphones effectively.

Package: The OPA211AID is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence: The OPA211AID is a high-performance operational amplifier specifically designed for audio applications, offering low noise, low distortion, and high output current capability.

Packaging/Quantity: The OPA211AID is typically sold in reels or tubes, with quantities varying based on the manufacturer's packaging standards.

Specifications

• Supply Voltage Range: ±2.5V to ±18V
• Input Offset Voltage: 0.25mV (maximum)
• Input Bias Current: 1nA (maximum)
• Gain Bandwidth Product: 20MHz
• Slew Rate: 13V/μs
• Output Current: 50mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The OPA211AID has the following pin configuration:

___________ OUT | 1 8 | V+ IN+ | 2 7 | NC IN- | 3 6 | V- NC | 4 5 | NC ‾‾‾‾‾‾‾‾‾‾‾‾‾

Functional Features

1. Low Noise: The OPA211AID's low input voltage noise density ensures minimal noise interference in audio applications, resulting in high-quality sound reproduction.
2. Low Distortion: With a low total harmonic distortion (THD), the OPA211AID maintains the fidelity of the audio signal, providing accurate and clear sound reproduction.
3. High Output Current Capability: The amplifier can deliver a significant amount of current, allowing it to drive various loads such as speakers and headphones effectively.
4. Wide Supply Voltage Range: The OPA211AID operates over a wide supply voltage range, making it compatible with different power sources and systems.
5. Stable Performance: The amplifier exhibits excellent stability, ensuring consistent performance even under varying operating conditions.

Advantages and Disadvantages

Advantages: - High-performance audio amplifier suitable for professional audio equipment and high-fidelity audio systems. - Low noise and distortion ensure accurate sound reproduction. - High output current capability allows for driving various loads effectively. - Wide supply voltage range provides flexibility in system design.

Disadvantages: - Limited pin configuration options may restrict certain circuit designs. - Higher cost compared to standard operational amplifiers due to its specialized audio performance.

Working Principles

The OPA211AID is based on a differential amplifier architecture, which amplifies the difference between the non-inverting (+) and inverting (-) input voltages. It utilizes advanced circuitry and precision components to achieve low noise, low distortion, and high output current capability. The amplifier's internal compensation ensures stability and reliable operation.

Application Field Plans

The OPA211AID is commonly used in the following audio applications:

1. Audio Amplifiers: The amplifier can be utilized in both professional and consumer audio amplifiers to achieve high-quality sound reproduction.
2. Professional Audio Equipment: The OPA211AID finds application in mixers, preamplifiers, equalizers, and other professional audio equipment where low noise and distortion are critical.
3. High-Fidelity Audio Systems: The amplifier is suitable for use in high-end audio systems, including home theater setups, stereo amplifiers, and audio receivers, to deliver exceptional audio performance.

Alternative Models

For those seeking alternative options, the following operational amplifiers can be considered:

1. OPA2134: This dual operational amplifier offers similar audio performance with low noise and distortion characteristics.
2. LM4562: Known for its high-fidelity audio performance, this operational amplifier is widely used in audio applications.
3. NE5532: A popular choice for audio amplification, this operational amplifier provides a good balance between performance and cost.

These alternative models offer comparable features and can be suitable replacements for the OPA