XTR105UG4
4-20mA current transmitters with sensor excitation and linearization
Manufacturer： ti
series introduction
# XTR105UG4 Product Series Introduction
## 1. Overview
The XTR105UG4 product series is a remarkable offering in the field of industrial and instrumentation electronics. It is a precision current transmitter integrated circuit that plays a crucial role in converting various input signals into a standardized 4 - 20 mA current output. This standard current loop is widely used in industrial control systems, process automation, and sensor interfacing due to its immunity to electrical noise, long - distance transmission capabilities, and ease of signal conditioning.
## 2. Key Features
### 2.1 High Precision
- The XTR105UG4 is designed with high - precision components, ensuring accurate conversion of input signals to the 4 - 20 mA output. It has a low offset error and excellent linearity, which means that the output current is a highly accurate representation of the input signal. This precision is essential in applications where accurate measurement and control are required, such as in chemical process control or environmental monitoring.
- The device offers a high - resolution conversion, allowing it to detect small changes in the input signal and translate them into corresponding changes in the output current. This makes it suitable for applications that demand fine - grained control and monitoring.
### 2.2 Wide Input Range
- It can accept a wide range of input signals, including voltage signals from different types of sensors. This flexibility allows it to interface with various sensors such as thermocouples, strain gauges, and pressure sensors. The ability to handle different input signals makes the XTR105UG4 a versatile solution for a variety of industrial applications.
- The input range can be adjusted through external resistors, providing users with the flexibility to customize the device according to their specific application requirements.
### 2.3 Low Power Consumption
- In today's energy - conscious world, the XTR105UG4 stands out with its low power consumption. This is particularly important in battery - powered applications or in systems where power efficiency is a key concern. The low power design helps to extend the battery life in portable devices and reduces the overall energy consumption in industrial installations.
- The device operates in a low - power mode without sacrificing its performance, ensuring that it can provide accurate and reliable operation while minimizing power usage.
### 2.4 Robustness and Reliability
- The XTR105UG4 is built to withstand harsh industrial environments. It has a high level of electromagnetic interference (EMI) immunity, which means that it can operate reliably in the presence of electrical noise from motors, power supplies, and other industrial equipment.
- The device is also designed to be resistant to temperature variations, humidity, and mechanical vibrations. This makes it suitable for use in outdoor applications, as well as in industrial plants where the operating conditions can be challenging.
## 3. Functional Block Diagram and Working Principle
### 3.1 Block Diagram
The XTR105UG4 consists of several key functional blocks, including an input amplifier, a voltage - to - current converter, and an output current regulator. The input amplifier is responsible for amplifying the input signal to a suitable level for further processing. The voltage - to - current converter then converts the amplified voltage signal into a current signal. Finally, the output current regulator ensures that the output current is stable and within the 4 - 20 mA range.
### 3.2 Working Principle
When an input signal is applied to the XTR105UG4, it is first amplified by the input amplifier. The gain of the amplifier can be adjusted using external resistors. The amplified voltage signal is then fed into the voltage - to - current converter, which uses a precision resistor to convert the voltage into a current. The output current is regulated by the output current regulator, which ensures that the current
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