OPA228UA

Product Overview

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

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: 0.5µV (maximum)
• Input Bias Current: 1pA (maximum)
• Gain Bandwidth Product: 10MHz
• Slew Rate: 20V/µs
• Output Current: 40mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The OPA228UA is an SOIC-8 package with the following pin configuration:

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

Functional Features

• Low input offset voltage and bias current for high precision applications
• Wide bandwidth allows for accurate signal amplification across a range of frequencies
• High output current capability enables driving of low impedance loads
• Rail-to-rail input and output operation for maximum dynamic range
• Low noise performance ensures minimal interference in sensitive applications

Advantages and Disadvantages

Advantages: - High precision amplification - Wide operating temperature range - Low noise performance - Rail-to-rail input and output operation

Disadvantages: - Limited output current compared to some other models - Higher cost compared to standard operational amplifiers

Working Principles

The OPA228UA is a precision operational amplifier designed for signal amplification and conditioning. It operates by amplifying the difference between the voltages applied to its non-inverting and inverting inputs. The input offset voltage and bias current are minimized to ensure accurate amplification of small signals. The wide bandwidth allows for precise amplification across a range of frequencies, while the high output current capability enables driving of low impedance loads.

Detailed Application Field Plans

The OPA228UA is suitable for various applications that require high precision amplification and conditioning of signals. Some potential application fields include:

1. Medical Devices: Used in medical instrumentation for accurate measurement and monitoring of vital signs.
2. Audio Equipment: Provides high fidelity amplification for audio signals in professional audio systems and consumer electronics.
3. Test and Measurement: Enables precise signal conditioning and measurement in laboratory equipment and data acquisition systems.
4. Industrial Automation: Used in control systems to amplify and condition sensor signals for accurate process control.
5. Communication Systems: Provides amplification and filtering of signals in wireless communication systems and base stations.

Detailed and Complete Alternative Models

1. OPA227UA: Similar to OPA228UA with lower gain bandwidth product but lower cost.
2. OPA2172AIDR: Dual operational amplifier with similar characteristics and rail-to-rail operation.
3. LT1677CS8#PBF: Precision operational amplifier with low noise performance and wide supply voltage range.

(Note: This list is not exhaustive and there are several other alternative models available in the market.)

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