## Technical Overview of ADR280ARTZ-R22 The **ADR280ARTZ-R2** is a high-performance, precision voltage reference manufactured by **Analog Devices**. It is specifically designed for low-voltage systems that require high accuracy and low power consumption. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the ADR280 component: | Feature | Specification | | :--- | :--- | | **Output Voltage ($V_{out}$)** | 1.2 V | | **Input Voltage Range** | 2.4 V to 15 V | | **Initial Accuracy** | ±5.0 mV (Max) | | **Temperature Coefficient** | 40 ppm/°C | | **Quiescent Current** | 10 $\mu$A (Max) | | **Output Noise** | 12 $\mu$V p-p (0.1 Hz to 10 Hz) | | **Package Type** | SOT-23-3 | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Core Functional Components The internal architecture of the ADR280 focuses on stability and efficiency: * **Bandgap Reference Core:** Uses a specialized circuit to provide a stable 1.2V output regardless of temperature fluctuations. * **Low-Dropout (LDO) Regulator Logic:** Allows the device to operate with a very small difference between the input and output voltage (low headroom). * **Power-Down/Sleep Capability:** Designed for battery-powered applications where minimizing current draw is critical. --- ### 3. Pin Configuration (SOT-23) | Pin Number | Symbol | Function | | :--- | :--- | :--- | | 1 | **$V_{in}$** | Input Supply Voltage | | 2 | **$V_{out}$** | Reference Output Voltage (1.2V) | | 3 | **GND** | Ground | --- ### 4. Application Areas Due to its 1.2V output and ultra-low power consumption, it is commonly used in: * **Precision Data Acquisition:** Providing a reference for ADCs (Analog-to-Digital Converters). * **Battery Management:** Monitoring voltage levels in portable electronics. * **Industrial Process Control:** Used in loop-powered 4-20mA transmitters. * **Handheld Instruments:** Where space and power are limited. --- ### 5. Part Number Breakdown: `ADR280ARTZ-R2` * **ADR280:** The base model series (1.2V Bandgap Reference). * **A:** Accuracy grade (Standard). * **RT:** Package designator for SOT-23. * **Z:** RoHS compliant / Lead-free. * **R2:** Packaging format (usually refers to the 7-inch reel size/quantity).