INA117KU
Single differential amplifiers in 8-pin SOIC for precision applications
Manufacturer： ti
series introduction
# INA117KU Product Series Introduction
## 1. Overview
The INA117KU is a high - performance instrumentation amplifier product series renowned for its precision, reliability, and versatility. Instrumentation amplifiers are crucial components in various electronic systems, especially those that require accurate amplification of small differential signals in the presence of large common - mode voltages. The INA117KU series is designed to meet the demanding requirements of a wide range of applications, from industrial measurement and control to medical instrumentation and data acquisition systems.
## 2. Key Features
### 2.1 High Precision
- **Low Offset Voltage**: The INA117KU features an extremely low input offset voltage. This characteristic is essential for applications where accurate measurement of small signals is required. A low offset voltage ensures that the output of the amplifier closely represents the input signal, minimizing errors in the measurement process. For example, in a strain - gauge measurement system, even a small offset voltage can lead to significant inaccuracies in the strain measurement, and the low offset of the INA117KU helps to maintain high measurement precision.
- **Low Drift**: It has a low temperature drift of the offset voltage. As the temperature changes, the offset voltage of the amplifier remains relatively stable. This is important in applications where the operating environment may experience temperature variations, such as industrial outdoor monitoring systems. The low drift ensures that the amplifier's performance remains consistent over a wide temperature range, typically from - 40°C to + 85°C.
### 2.2 High Common - Mode Rejection Ratio (CMRR)
- The INA117KU offers a high CMRR, which is a measure of the amplifier's ability to reject common - mode signals while amplifying differential signals. In many real - world applications, the input signals are often accompanied by large common - mode voltages, such as power - supply noise or electromagnetic interference. A high CMRR allows the INA117KU to effectively suppress these common - mode signals, ensuring that only the desired differential signal is amplified. For instance, in a bio - potential measurement system, where the electrodes pick up both the weak bio - signals (differential) and the power - line interference (common - mode), the high CMRR of the INA117KU helps to extract the bio - signals accurately.
### 2.3 Wide Bandwidth
- It has a relatively wide bandwidth, which enables it to handle high - frequency signals. This is beneficial in applications such as high - speed data acquisition systems or communication systems where the input signals may have a wide frequency spectrum. The wide bandwidth ensures that the amplifier can accurately amplify the signals without significant attenuation or distortion, allowing for the faithful reproduction of the input signals at the output.
### 2.4 Low Noise
- The INA117KU is designed to have low input noise. In applications where the input signals are very small, such as in sensor - based measurement systems, the noise of the amplifier can significantly affect the signal - to - noise ratio (SNR). The low noise of the INA117KU helps to maintain a high SNR, ensuring that the small input signals can be accurately detected and amplified.
## 3. Pin Configuration and Functionality
The INA117KU typically comes in a standard integrated - circuit package with a well - defined pin configuration.
- **Input Pins**: There are two input pins (differential inputs) that are used to connect the source of the differential signal. These pins are designed to accept small differential voltages and are protected against over - voltage conditions to ensure the reliability of the amplifier.
- **Output Pin**: The output pin provides the amplified differential signal. The output voltage is proportional to the input differential voltage, with the gain determined by external resistors.
- **Power
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8-SOIC
8-SOIC
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