Precision micropower shunt voltage reference with 0.1% accuracy
Manufacturer： ti
# LM4040A30ILP Product Series Introduction
## 1. Overview
The LM4040A30ILP belongs to a highly reliable and precision voltage reference product series. Voltage references are crucial components in electronic circuits as they provide a stable and accurate voltage level, which is essential for the proper functioning of various analog and digital systems. This particular series is designed to meet the demanding requirements of modern electronic applications, offering a combination of high precision, low power consumption, and excellent temperature stability.
## 2. Key Features
### 2.1 High Precision
- **Accurate Output Voltage**: The LM4040A30ILP is specifically calibrated to provide an output voltage of 3.0V with a high degree of accuracy. The initial tolerance is extremely low, typically within a tight range, ensuring that the actual output voltage closely matches the specified value. This high precision is vital in applications where even small voltage variations can lead to significant errors, such as in measurement instruments, data acquisition systems, and precision analog - to - digital converters (ADCs).
- **Low Temperature Coefficient**: Temperature changes can have a significant impact on the performance of voltage references. However, the LM4040A30ILP features a very low temperature coefficient. This means that the output voltage remains relatively stable over a wide temperature range. Whether the device is operating in a cold environment or a high - temperature industrial setting, the voltage output will not deviate significantly from its nominal value, providing consistent performance.
### 2.2 Low Power Consumption
- **Quiescent Current**: The series is designed with low power consumption in mind. The quiescent current, which is the current drawn by the device when it is in a standby or idle state, is very low. This makes the LM4040A30ILP an ideal choice for battery - powered applications, such as portable medical devices, handheld measurement tools, and wireless sensors. By consuming less power, the device helps to extend the battery life of these applications, reducing the frequency of battery replacements and improving overall system efficiency.
### 2.3 Small Package Size
- **Space - Saving Design**: The LM4040A30ILP comes in a small and compact package. This small form factor allows for easy integration into printed circuit boards (PCBs) with limited space. It is suitable for use in miniaturized electronic devices, such as smartwatches, earbuds, and other wearable electronics, where every square millimeter of PCB space is valuable. The small package also helps to reduce the overall size and weight of the final product.
### 2.4 Excellent Line and Load Regulation
- **Line Regulation**: Line regulation refers to the ability of the voltage reference to maintain a stable output voltage despite changes in the input voltage. The LM4040A30ILP has excellent line regulation characteristics, ensuring that the output voltage remains constant even when the input voltage fluctuates within a specified range. This is important in applications where the power supply voltage may vary, such as in automotive electronics or industrial power systems.
- **Load Regulation**: Load regulation is the ability of the device to maintain a stable output voltage when the load current changes. The LM4040A30ILP can handle a wide range of load currents while keeping the output voltage within the specified tolerance. This makes it suitable for applications with varying load requirements, such as power management circuits and audio amplifiers.
## 3. Applications
### 3.1 Measurement and Instrumentation
- **Multimeters and Oscilloscopes**: In measurement instruments like multimeters and oscilloscopes, accurate voltage references are essential for precise measurements. The high precision and stability of the LM4040A30ILP ensure that these instruments can provide accurate readings of voltage, current