OPA2228U/2K5

Basic Information Overview

• Category: Operational Amplifier (Op-Amp)
• Use: Signal amplification and conditioning in various electronic circuits
• Characteristics:
  • High gain and bandwidth
  • Low input offset voltage and current
  • Low noise and distortion
• Package: SOIC-8 (Small Outline Integrated Circuit)
• Essence: Precision operational amplifier
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: ±2.25V to ±18V
• Input Offset Voltage: 150µV (maximum)
• Input Bias Current: 1nA (maximum)
• Gain Bandwidth Product: 22MHz
• Slew Rate: 20V/µs
• Input Voltage Noise Density: 10nV/√Hz
• Output Current: 40mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The OPA2228U/2K5 has a standard SOIC-8 pin configuration:

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

Functional Features

• High precision and accuracy in signal amplification
• Wide operating voltage range allows for flexibility in various applications
• Low input offset voltage and current minimize errors in signal processing
• High gain and bandwidth enable the amplification of small signals with minimal distortion
• Low noise performance ensures clean and accurate signal reproduction
• Fast slew rate enables the amplifier to quickly respond to changes in input signals

Advantages and Disadvantages

Advantages

• High precision and accuracy
• Low noise and distortion
• Wide operating voltage range
• Fast response time

Disadvantages

• Relatively high power consumption compared to low-power op-amps
• Limited output current capability

Working Principles

The OPA2228U/2K5 is a precision operational amplifier that utilizes a differential input stage, followed by a gain stage and an output buffer. The differential input stage amplifies the voltage difference between the non-inverting (IN+) and inverting (IN-) inputs. The amplified signal then passes through the gain stage, which further amplifies the signal based on the chosen gain configuration. Finally, the output buffer provides a low impedance output to drive external loads.

Detailed Application Field Plans

The OPA2228U/2K5 is widely used in various applications that require high precision and low noise amplification. Some common application fields include:

1. Audio Amplification: The OPA2228U/2K5 is suitable for audio amplifiers, providing clean and accurate sound reproduction.
2. Instrumentation: It is commonly used in precision measurement instruments, such as multimeters and data acquisition systems, to ensure accurate signal conditioning.
3. Active Filters: The op-amp's high gain and bandwidth make it ideal for active filter circuits, allowing for precise frequency response shaping.
4. Sensor Signal Conditioning: The OPA2228U/2K5 can be used to amplify and condition signals from various sensors, such as temperature or pressure sensors, ensuring accurate measurements.

Detailed and Complete Alternative Models

• OPA2277U/2K5
• TL072CP
• AD8620ARZ
• LM358N
• MCP6002-I/P

These alternative models offer similar functionality and characteristics to the OPA2228U/2K5 and can be considered as replacements depending on specific requirements.

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