OPA228PG4

Product Overview

Category: Operational Amplifier
Use: Signal amplification and conditioning
Characteristics: High precision, low noise, wide bandwidth
Package: DIP-8 (Dual Inline Package)
Essence: Integrated circuit for analog signal processing
Packaging/Quantity: Tube packaging, 50 units per tube

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: 0.5μV (max)
• Input Bias Current: 1pA (typ)
• Gain Bandwidth Product: 10MHz (typ)
• Slew Rate: 7V/μs (typ)
• Output Current: 40mA (typ)

Pin Configuration

The OPA228PG4 has a standard DIP-8 pin configuration:

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

Functional Features

• Low input offset voltage and bias current for high precision applications
• Wide bandwidth allows for accurate amplification of high-frequency signals
• Low noise performance ensures minimal interference in sensitive applications
• High output current capability enables driving of low impedance loads
• Stable operation over a wide range of supply voltages

Advantages and Disadvantages

Advantages: - High precision amplification - Low noise performance - Wide bandwidth - Versatile supply voltage range - Robust output current capability

Disadvantages: - Limited number of pins for additional functionality - Not suitable for applications requiring rail-to-rail input/output swing

Working Principles

The OPA228PG4 is an operational amplifier that amplifies and conditions analog signals. It operates based on the principles of differential amplification and feedback control. The input signal is amplified by a high-gain differential amplifier, and the output is adjusted to maintain a desired relationship with the input through negative feedback. This allows for precise control and manipulation of the input signal.

Detailed Application Field Plans

The OPA228PG4 is commonly used in various applications, including:

1. Precision measurement equipment: Due to its high precision and low noise characteristics, the OPA228PG4 is suitable for use in instruments such as multimeters, data acquisition systems, and sensor interfaces.
2. Audio amplification: The wide bandwidth and low distortion of the OPA228PG4 make it ideal for audio amplifiers, preamplifiers, and headphone amplifiers.
3. Industrial control systems: With its stable operation over a wide range of supply voltages, the OPA228PG4 can be employed in industrial control systems, motor control circuits, and power management applications.
4. Communication systems: The OPA228PG4's high gain bandwidth product and low noise performance make it suitable for use in communication systems, including wireless transceivers and base stations.

Detailed and Complete Alternative Models

• OPA227P: Similar specifications and pin configuration, but lower gain bandwidth product
• OPA2134PA: Higher gain bandwidth product and rail-to-rail input/output swing capability
• LT1677: Lower input offset voltage and bias current, but higher cost
• AD8628: Lower noise performance and higher slew rate, but different pin configuration

These alternative models offer different trade-offs in terms of performance, cost, and specific application requirements.

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