OPA2228UA

Overview

Category: Operational Amplifier
Use: Signal amplification and conditioning
Characteristics: High precision, low noise, wide bandwidth
Package: SOIC-8
Essence: Monolithic operational amplifier
Packaging/Quantity: Tube of 50 units

Specifications

• Supply Voltage: ±2.5V to ±18V
• Input Offset Voltage: 0.25mV (max)
• Input Bias Current: 1nA (typ)
• Input Noise Voltage: 7nV/√Hz (typ)
• Gain Bandwidth Product: 22MHz (typ)
• Slew Rate: 20V/µs (typ)
• Output Current: 40mA (typ)

Pin Configuration

The OPA2228UA has a standard pin configuration as follows:

```

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

Functional Features

• High precision: The OPA2228UA offers excellent accuracy and stability in signal amplification applications.
• Low noise: With a low input noise voltage, it ensures minimal interference and distortion in the amplified signal.
• Wide bandwidth: The operational amplifier provides a broad frequency response, making it suitable for various applications.
• High output current: Capable of delivering high output currents, enabling it to drive complex loads.

Advantages and Disadvantages

Advantages: - High precision and accuracy - Low noise performance - Wide bandwidth for versatile applications - Robust output current capability

Disadvantages: - Relatively higher power consumption compared to some low-power operational amplifiers - Limited availability in certain regions

Working Principles

The OPA2228UA is a monolithic operational amplifier designed for signal amplification and conditioning. It utilizes a combination of internal circuitry, including differential input stages, gain stages, and output stages, to achieve high precision and performance. The amplifier operates by amplifying the voltage difference between its two input terminals, providing an amplified output signal that faithfully represents the input.

Detailed Application Field Plans

The OPA2228UA finds applications in various fields, including:

1. Audio Amplification: It can be used in audio systems to amplify weak signals from microphones or musical instruments.
2. Sensor Signal Conditioning: The amplifier can process and amplify signals from sensors such as temperature, pressure, or light sensors.
3. Instrumentation Systems: It is suitable for precision measurement and data acquisition systems where accurate signal amplification is required.
4. Active Filters: The OPA2228UA can be used in active filter circuits to shape and condition specific frequency ranges.

Detailed and Complete Alternative Models

1. OPA2277: Similar specifications and features, available in DIP-8 package.
2. LT1677: Low noise operational amplifier with comparable performance, available in SOIC-8 package.
3. AD8628: Precision operational amplifier with low offset voltage, available in MSOP-8 package.

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

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