OPA2187IDR - English Editing Encyclopedia Entry

Product Overview

Category

OPA2187IDR belongs to the category of operational amplifiers (op-amps).

Use

The OPA2187IDR op-amp is commonly used in various electronic circuits for amplification and signal conditioning purposes.

Characteristics

• High gain: The OPA2187IDR offers a high voltage gain, making it suitable for applications requiring precise amplification.
• Low noise: This op-amp has low input and output noise, ensuring accurate signal processing.
• Wide bandwidth: With a wide bandwidth range, the OPA2187IDR can handle high-frequency signals effectively.
• Low power consumption: It operates on low power supply voltages, making it energy-efficient.
• Rail-to-rail inputs and outputs: The op-amp supports input and output signals that span the entire supply voltage range.
• Stable operation: It provides stable performance even under varying load conditions.

Package and Quantity

The OPA2187IDR is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply voltage range: ±2.5V to ±18V
• Input offset voltage: 0.5mV (maximum)
• Input bias current: 1pA (typical)
• Gain bandwidth product: 10MHz (typical)
• Slew rate: 6V/µs (typical)
• Operating temperature range: -40°C to +125°C

Pin Configuration

The OPA2187IDR op-amp has eight pins arranged as follows:

```

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| | --| IN- VCC+ |-- --| IN+ VCC- |-- --| OUT NC |-- --| NC OUT |-- --| VEE IN+ |-- --| VCC- IN- |-- |___________| ```

Functional Features

• Differential inputs: The op-amp accepts differential input signals, allowing for precise amplification of the voltage difference between the two inputs.
• High output current: It can deliver a significant amount of current to drive various loads.
• Unity-gain stable: The OPA2187IDR remains stable even when configured for unity gain, ensuring reliable operation in different circuit configurations.
• Overload protection: It incorporates built-in protection mechanisms to prevent damage from excessive input or output voltages.

Advantages and Disadvantages

Advantages

• High gain and low noise enable accurate signal amplification.
• Wide bandwidth allows for effective handling of high-frequency signals.
• Low power consumption contributes to energy efficiency.
• Rail-to-rail inputs and outputs provide flexibility in signal range.
• Stable operation ensures consistent performance under varying conditions.

Disadvantages

• Limited supply voltage range compared to some other op-amps.
• Relatively lower slew rate may restrict its use in certain high-speed applications.

Working Principles

The OPA2187IDR operates based on the principles of differential amplification. It amplifies the voltage difference between its two input terminals, producing an amplified output signal. The internal circuitry of the op-amp utilizes transistors and feedback mechanisms to achieve the desired amplification characteristics.

Application Field Plans

The OPA2187IDR finds applications in various fields, including: 1. Audio amplification: It can be used in audio systems to amplify weak audio signals with high fidelity. 2. Sensor signal conditioning: The op-amp can process and amplify signals from sensors, such as temperature or pressure sensors, for further analysis. 3. Instrumentation and measurement: It is suitable for precision measurement applications that require accurate signal amplification. 4. Active filters: The OPA2187IDR can be used in active filter circuits to shape the frequency response of a system.

Alternative Models

Other op-amps that can be considered as alternatives to the OPA2187IDR include: - LM358 - TL072 - AD822

These models offer similar functionality and characteristics, providing options for different design requirements.

In conclusion, the OPA2187IDR is a versatile operational amplifier with high gain, low noise, and wide bandwidth. Its stable operation, rail-to-rail inputs/outputs, and low power consumption make it suitable for various applications in audio systems, sensor signal conditioning, instrumentation, and active filters.

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