OPA684ID

series introduction

# OPA684ID Product Series Introduction

## 1. Overview
The OPA684ID is a high - performance operational amplifier product series that belongs to the realm of precision analog electronics. Renowned for its exceptional speed, accuracy, and versatility, it has found widespread applications in a diverse range of industries and electronic systems. This series is designed to meet the demanding requirements of modern analog signal processing, offering engineers a reliable and efficient solution for their circuit design needs.

## 2. Key Features

### 2.1 High - Speed Performance
- **Slew Rate**: The OPA684ID boasts an impressively high slew rate. Slew rate is a measure of how fast an op - amp can change its output voltage. With a high slew rate, it can handle rapid changes in input signals without significant distortion. This makes it ideal for applications such as high - speed data acquisition systems, where fast - rising or falling edges of signals need to be accurately reproduced at the output.
- **Gain - Bandwidth Product**: It has a large gain - bandwidth product. This parameter determines the frequency range over which the op - amp can provide a specified gain. A high gain - bandwidth product allows the OPA684ID to operate at high frequencies while maintaining a stable gain, enabling its use in wide - bandwidth amplifier circuits, such as radio frequency (RF) and video signal processing.

### 2.2 Precision and Accuracy
- **Low Offset Voltage**: Offset voltage is the voltage that exists at the output of an op - amp when the input voltages are equal. The OPA684ID has a very low offset voltage, which means that it can accurately amplify small input signals without introducing significant DC errors. This is crucial in applications like sensor signal conditioning, where small changes in the sensor output need to be precisely measured.
- **Low Input Bias Current**: Input bias current is the current that flows into the input terminals of the op - amp. A low input bias current reduces the loading effect on the input source, ensuring that the op - amp does not draw excessive current from the preceding circuit. This is beneficial in high - impedance input circuits, such as those used in medical instrumentation and precision measurement devices.

### 2.3 Versatility
- **Single - Supply and Dual - Supply Operation**: The OPA684ID can be operated from either a single - supply or a dual - supply voltage configuration. This flexibility allows it to be easily integrated into different types of electronic systems. For example, in battery - powered portable devices, single - supply operation can be used to conserve power, while in more complex systems that require both positive and negative power supplies, dual - supply operation can be employed.
- **Rail - to - Rail Output**: It features rail - to - rail output capability, which means that the output voltage can swing very close to the power supply rails. This maximizes the dynamic range of the output signal, allowing for efficient use of the available power supply voltage. It is particularly useful in applications where the full range of the power supply voltage needs to be utilized, such as in audio amplifiers and low - voltage analog - to - digital converters.

## 3. Package and Pin Configuration
The OPA684ID is typically available in a standard integrated circuit package, such as the SOIC (Small Outline Integrated Circuit) package. The pin configuration is designed to be user - friendly and compatible with common printed circuit board (PCB) design practices.
- **Input Pins**: It has two input pins, the inverting input (-) and the non - inverting input (+). These pins are used to apply the input signals to the op - amp.
- **Output Pin**: The output pin provides the amplified output signal. The output can be connected to the subsequent stages of the circuit, such as a load resistor or another amplifier.

Images for reference

8-SOIC

8-SOIC

SOT-23-6

Datasheets

• OPA684
• OPA684
• PDF 3

Partlist