OPA2889IDGSR
Dual low-power voltage feedback operational amplifiers in compact 10-pin VSSOP format
Manufacturer： ti
series introduction
# OPA2889IDGSR Product Series Introduction
## 1. Overview
The OPA2889IDGSR belongs to a high - performance operational amplifier product series. Operational amplifiers are fundamental building blocks in analog circuit design, and the OPA2889IDGSR offers a range of features that make it suitable for a wide variety of applications. This series is designed to meet the demanding requirements of modern electronic systems, providing excellent performance in terms of speed, accuracy, and power consumption.
## 2. Key Features
### 2.1 High - Speed Performance
- **Gain - Bandwidth Product**: The OPA2889IDGSR has a high gain - bandwidth product. This parameter determines the frequency range over which the amplifier can maintain a specified gain. A high gain - bandwidth product allows the amplifier to handle high - frequency signals effectively, making it suitable for applications such as high - speed data acquisition systems, communication circuits, and video processing. For example, in a high - speed data acquisition system, it can accurately amplify fast - changing input signals without significant distortion.
- **Slew Rate**: It features a high slew rate. The slew rate is the maximum rate of change of the output voltage of the amplifier. A high slew rate enables the amplifier to quickly respond to large - amplitude input signals. In applications like pulse amplification or in circuits dealing with fast - rising or falling edges, the high slew rate of the OPA2889IDGSR ensures that the output can follow the input signal accurately, reducing signal distortion.
### 2.2 Low - Noise Operation
- **Input Voltage Noise**: The amplifier has low input voltage noise. In sensitive applications such as sensor signal conditioning, low noise is crucial. For instance, when amplifying the weak signals from a biosensor or a high - precision temperature sensor, the low input voltage noise of the OPA2889IDGSR helps to preserve the integrity of the original signal. It minimizes the addition of unwanted noise to the signal, resulting in a more accurate measurement and better overall system performance.
- **Input Current Noise**: Similarly, the low input current noise is beneficial in applications where the input impedance is high. In circuits with high - impedance sensors or in precision measurement circuits, low input current noise reduces the noise contribution from the input current, improving the signal - to - noise ratio of the system.
### 2.3 Precision and Accuracy
- **Low Offset Voltage**: The OPA2889IDGSR has a low offset voltage. Offset voltage is the voltage that appears at the output of the amplifier when the input voltage is zero. A low offset voltage ensures that the amplifier provides accurate amplification, especially in applications where small - signal amplification is required. In precision measurement systems, such as in a digital multimeter or a strain - gauge amplifier, low offset voltage helps to reduce measurement errors and improve the overall accuracy of the system.
- **High Common - Mode Rejection Ratio (CMRR)**: It offers a high CMRR. CMRR is a measure of the amplifier's ability to reject common - mode signals (signals that appear equally on both input terminals). In applications where there is a significant amount of common - mode noise, such as in industrial control systems or in systems with long signal cables, a high CMRR ensures that only the differential input signal is amplified, while the common - mode noise is effectively suppressed.
### 2.4 Power Efficiency
- **Low Supply Current**: The amplifier operates with a relatively low supply current. This makes it suitable for battery - powered applications or for systems where power consumption is a critical factor. In portable devices such as handheld medical monitors or wireless sensor nodes, the low supply current of the OPA2889IDGSR helps to extend the battery life, reducing the need for frequent battery replacements
Images for reference
10-MSOP
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