OPA1641AIDGKR

Product Overview

• Category: Operational Amplifier
• Use: Audio applications, precision measurement, and instrumentation
• Characteristics: Low noise, low distortion, high precision, wide bandwidth
• Package: 8-pin VSSOP package
• Essence: High-performance audio operational amplifier
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: 0.5μV (maximum)
• Input Bias Current: 1nA (maximum)
• Gain Bandwidth Product: 20MHz
• Slew Rate: 10V/μs
• Input Noise Voltage: 7nV/√Hz
• Total Harmonic Distortion: 0.00006% (typical)

Pin Configuration

The OPA1641AIDGKR has the following pin configuration:

```

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| | --| IN- OUT |-- --| IN+ V- |-- --| V+ NC |-- --| V- V+ |-- --| OUT IN+ |-- --| IN- IN- |-- --| GND V- |-- |___________| ```

Functional Features

• Low noise: The OPA1641AIDGKR offers a very low input noise voltage, making it suitable for high-fidelity audio applications.
• Low distortion: With a low total harmonic distortion, this operational amplifier ensures accurate signal reproduction.
• High precision: The input offset voltage and bias current are minimized, providing precise amplification.
• Wide bandwidth: The high gain bandwidth product allows for amplification of signals with frequencies up to 20MHz.

Advantages and Disadvantages

Advantages: - High-performance audio amplification - Low noise and distortion - Wide bandwidth for accurate signal reproduction - Suitable for precision measurement and instrumentation applications

Disadvantages: - Limited availability in the VSSOP package - Higher cost compared to standard operational amplifiers

Working Principles

The OPA1641AIDGKR is a voltage-feedback operational amplifier designed for high-performance audio applications. It utilizes a combination of low noise, low distortion, and high precision to accurately amplify audio signals. The input stage minimizes offset voltage and bias current, ensuring precise amplification. The wide bandwidth allows for faithful reproduction of audio signals with minimal distortion.

Detailed Application Field Plans

The OPA1641AIDGKR is commonly used in the following application fields:

1. Audio Amplification: The low noise and distortion characteristics make it ideal for high-fidelity audio amplification in professional audio equipment, such as preamplifiers and headphone amplifiers.
2. Precision Measurement: The high precision and low offset voltage make it suitable for use in precision measurement instruments, such as data acquisition systems and test equipment.
3. Instrumentation: The wide bandwidth and low distortion enable accurate signal conditioning in instrumentation applications, including signal generators and oscilloscopes.

Detailed and Complete Alternative Models

1. OPA1612AIDR: Similar to the OPA1641AIDGKR, this operational amplifier offers low noise and distortion characteristics but comes in a different package (8-pin SOIC).
2. OPA2134PA: This dual operational amplifier provides similar performance characteristics and is available in an 8-pin DIP package.
3. LT1115CN8: Another high-performance audio operational amplifier with low noise and distortion, available in an 8-pin PDIP package.

These alternative models can be considered based on specific requirements and availability.

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