ADR3425ARJZ
Precision 2.5V voltage reference ICs in compact SOT-23 packages
Manufacturer： analog-devices
series introduction
# ADR3425ARJZ Product Series Introduction
## 1. Overview
The ADR3425ARJZ is a part of a high - performance voltage reference product series offered by Analog Devices. Voltage references are crucial components in electronic circuits as they provide a stable and accurate voltage output, which is essential for the proper functioning of various analog and digital systems. The ADR3425ARJZ is specifically designed to meet the demanding requirements of applications that need precise voltage references with low noise and high temperature stability.
## 2. Key Features
### 2.1 High Accuracy
- The ADR3425ARJZ offers an initial output voltage accuracy of ±0.05%. This high level of accuracy ensures that the voltage provided by the reference is very close to the nominal value of 2.5V. For applications such as precision analog - to - digital converters (ADCs) and digital - to - analog converters (DACs), this accuracy is vital as it directly impacts the measurement and conversion precision.
- The tight tolerance helps in reducing errors in systems where accurate voltage levels are critical, such as in test and measurement equipment, industrial control systems, and medical devices.
### 2.2 Low Temperature Coefficient
- It has a low temperature coefficient of typically 10 ppm/°C. This means that the output voltage of the ADR3425ARJZ changes very little with variations in temperature. In real - world applications, temperature changes are inevitable, and a low temperature coefficient ensures that the voltage reference remains stable over a wide temperature range.
- For example, in automotive electronics, where the temperature can vary from extremely cold to very hot conditions, the ADR3425ARJZ can maintain its accuracy, providing reliable performance in engine control units, sensor interfaces, and other automotive systems.
### 2.3 Low Noise
- The device features low output noise, with a typical noise density of 10 μVp - p (0.1 Hz to 10 Hz). Low noise is essential in applications where small signals need to be accurately measured or processed.
- In audio systems, for instance, a low - noise voltage reference like the ADR3425ARJZ can help in reducing background noise and improving the overall audio quality. It is also beneficial in high - precision measurement instruments where noise can interfere with the accuracy of the measurements.
### 2.4 Low Power Consumption
- The ADR3425ARJZ has a low quiescent current of typically 60 μA. This low power consumption makes it suitable for battery - powered applications, such as portable medical devices, handheld test equipment, and wireless sensor nodes.
- By consuming less power, the device helps in extending the battery life of these applications, reducing the need for frequent battery replacements and improving the overall energy efficiency of the system.
### 2.5 Small Package Size
- It comes in a small SOT - 23 - 5 package. The compact size of the package is advantageous in applications where board space is limited, such as in mobile devices, wearables, and miniaturized industrial sensors.
- The small form factor allows for easy integration into densely populated printed circuit boards (PCBs), enabling designers to create more compact and lightweight electronic products.
## 3. Functional Block Diagram and Working Principle
The ADR3425ARJZ is based on a band - gap voltage reference architecture. The band - gap reference circuit generates a stable voltage that is relatively independent of temperature and power supply variations.
- **Input Stage**: The device takes in a power supply voltage within a specified range. It has built - in protection circuits to ensure proper operation and prevent damage from over - voltage or under - voltage conditions.
- **Band
Images for reference
505-SOT-23-6
SOT-23-6
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