OPA2172ID

Overview

Category: Integrated Circuit (IC)

Use: Operational Amplifier

Characteristics: - Low offset voltage - Low input bias current - High open-loop gain - Wide bandwidth - Rail-to-rail output swing - Low noise

Package: SOIC (Small Outline Integrated Circuit)

Essence: The OPA2172ID is a high-performance operational amplifier designed for precision applications.

Packaging/Quantity: The OPA2172ID is available in a standard SOIC package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: ±2.25V to ±18V
• Input Offset Voltage: 150µV (maximum)
• Input Bias Current: 1nA (maximum)
• Open-Loop Gain: 120dB (typical)
• Bandwidth: 8MHz (typical)
• Output Swing: Rail-to-Rail
• Noise: 10nV/√Hz (typical)

Pin Configuration

The OPA2172ID has a dual-channel configuration with eight pins. The pinout diagram is as follows:

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

Functional Features

1. Low Offset Voltage: The OPA2172ID exhibits low offset voltage, ensuring accurate amplification of small signals.

2. Low Input Bias Current: With low input bias current, the OPA2172ID minimizes the impact of input loading on the signal source.

3. High Open-Loop Gain: The high open-loop gain allows for precise amplification of weak signals.

4. Wide Bandwidth: The OPA2172ID offers a wide bandwidth, enabling it to handle high-frequency signals accurately.

5. Rail-to-Rail Output Swing: The rail-to-rail output swing capability allows the amplifier to provide maximum voltage range at the output.

6. Low Noise: The low noise characteristic ensures minimal interference and distortion in signal amplification.

Advantages

• High precision and accuracy
• Versatile for various applications
• Wide operating voltage range
• Low power consumption
• Stable performance over temperature variations

Disadvantages

• Relatively higher cost compared to some other operational amplifiers
• Limited availability in certain package options

Working Principles

The OPA2172ID is based on a differential input stage followed by a gain stage. It utilizes a combination of active and passive components to amplify the input signal while maintaining linearity and stability. The amplifier operates in a closed-loop configuration, where feedback is used to control the gain and overall performance.

Application Field Plans

The OPA2172ID is suitable for a wide range of applications, including but not limited to: - Precision instrumentation - Medical equipment - Audio amplification - Sensor signal conditioning - Data acquisition systems - Industrial control systems

Alternative Models

1. OPA211: Offers similar performance with enhanced precision and lower noise.
2. OPA2180: Provides higher bandwidth and faster response time.
3. OPA1612: Designed for audio applications with ultra-low distortion.

These alternative models can be considered based on specific requirements and desired performance characteristics.

In conclusion, the OPA2172ID is a high-performance operational amplifier that offers low offset voltage, low input bias current, high open-loop gain, wide bandwidth, rail-to-rail output swing, and low noise. Its versatile nature makes it suitable for various precision applications in different industries. While it may have a higher cost compared to some alternatives, its exceptional performance and stability justify the investment.