The TL082CD is a high-performance JFET-input operational amplifier manufactured by onsemi, part of the TL08x family of operational amplifiers. This device is widely recognized for its versatility and reliability in various applications, including audio processing, signal conditioning, and instrumentation. The TL082CD is particularly valued for its low noise, high input impedance, and fast response characteristics.

## Key Features

1. JFET Input Stage: The TL082CD features a JFET input stage, which provides exceptionally high input impedance (typically 10^12 ohms) and low input bias current. This makes it ideal for interfacing with high-impedance sources, ensuring minimal loading on the signal source.

2. Low Noise Performance: The amplifier is designed to minimize noise, with a typical voltage noise density of 15 nV/√Hz at 1 kHz. This low noise characteristic is crucial for applications requiring high fidelity, such as audio and precision measurement systems.

3. Wide Gain-Bandwidth Product: The TL082CD has a gain-bandwidth product of approximately 3 MHz, allowing it to effectively handle a wide range of frequencies. This feature is essential for applications that require high-speed signal processing.

4. High Slew Rate: With a slew rate of 13 V/µs, the TL082CD can respond quickly to rapid changes in input signals, making it suitable for fast signal applications, including pulse and square wave signals.

5. Low Total Harmonic Distortion (THD): The amplifier exhibits low distortion characteristics, with a typical THD of 0.01% at 1 kHz. This low distortion is critical for maintaining signal integrity in audio and other sensitive applications.

6. Single-Supply Operation: The TL082CD can operate on a single power supply, which simplifies circuit design and reduces the number of components required. This feature is particularly advantageous in battery-powered and portable applications.

## Specifications

- Supply Voltage (V+ to V-): ±3V to ±18V
- Input Voltage Range: Common-mode input voltage range extends from V- to V+ - 2V
- Input Impedance: Typically 10^12 ohms (differential)
- Output Impedance: Typically 75 ohms
- Open-Loop Voltage Gain: 100 dB (typical)
- Gain-Bandwidth Product: 3 MHz (typical)
- Slew Rate: 13 V/µs (typical)
- Total Harmonic Distortion (THD): 0.01% (typical at 1 kHz)
- Power Consumption: 1.2 mA per amplifier (typical)
- Temperature Range: -40°C to +85°C

## Applications

The TL082CD is suitable for a variety of applications, including:

- Audio Processing: Commonly used in audio amplifiers, mixers, and equalizers due to its low noise and distortion characteristics, ensuring high-quality sound reproduction.
- Signal Conditioning: Ideal for sensor signal conditioning in industrial applications, where high input impedance is required to avoid loading effects.
- Active Filters: Frequently used in active filter designs, such as low-pass, high-pass, and band-pass filters, due to its wide bandwidth and low distortion.
- Data Acquisition Systems: Utilized in data acquisition systems where precision and accuracy are paramount, ensuring reliable signal processing.

## Package Information

The TL082CD is available in various package types, including:

- DIP-8: Dual In-line Package, suitable for through-hole mounting.
- SOIC-8: Small Outline Integrated Circuit, suitable for surface mounting.

## Conclusion

The onsemi TL082CD operational amplifier is a versatile and reliable component that offers excellent performance for a wide range of applications. Its combination of low noise, high input impedance, and fast response time makes it a popular choice among engineers and designers in the fields of audio, instrumentation, and signal processing. Whether used in consumer electronics or industrial systems, the TL082CD continues to be a go-to solution for high-performance amplification needs. Its robust specifications and features ensure that it meets the demands of modern electronic applications effectively.