## ADR525BKS-R2: Electronic Component Overview The **ADR525BKS-R2** is a high-precision, shunt-mode voltage reference manufactured by **Analog Devices**. It is designed for applications requiring high stability and low power consumption in a compact footprint. --- ### 1. Key Technical Specifications The table below highlights the primary electrical characteristics of the ADR525 series: | Parameter | Specification | | :--- | :--- | | **Output Voltage ($V_{out}$)** | 2.500 V | | **Initial Accuracy** | ±5.0 mV (0.2%) | | **Temperature Coefficient** | 40 ppm/°C | | **Operating Current Range** | 50 µA to 15 mA | | **Output Noise (0.1 Hz to 10 Hz)** | 18 µV p-p | | **Package Type** | SC70-3 (KS-3) | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Core Functional Features * **Shunt Topology:** Operates like a Zener diode but with much higher precision. It maintains a constant 2.5V across its terminals by varying the current it draws. * **Low Power Consumption:** With a minimum operating current of only **50 µA**, it is ideal for battery-powered or portable electronics. * **No Output Capacitor Required:** The device is stable without an external output capacitor, saving board space and reducing bill-of-materials (BOM) costs. * **High Current Handling:** Despite its small size, it can sink up to 15 mA, making it versatile for various load conditions. --- ### 3. Pin Configuration (SC70-3) The device comes in a 3-pin surface-mount package: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | **V+** | Positive terminal (Output/Feedback) | | 2 | **NC / V-** | Negative terminal (Ground) | | 3 | **NC** | No internal connection | --- ### 4. Application Use Cases The ADR525BKS-R2 is commonly integrated into the following systems: 1. **Precision Data Converters:** Used as a reference voltage for 12-bit or 14-bit ADCs and DACs. 2. **Portable Instrumentation:** Due to the low 50 µA minimum current, it extends battery life in handheld meters. 3. **Industrial Process Control:** Provides a stable voltage baseline for sensors and transmitters. 4. **Power Supplies:** Acts as a reference for linear regulators and switching power supplies. --- ### 5. Simple Implementation Example To use this shunt reference, an external resistor ($R_{S}$) must be placed between the supply voltage ($V_{S}$) and the device to limit the current. ```python # Formula to calculate the required series resistor (Rs): # Rs = (Vin_min - Vout) / (I_load_max + I_shunt_min) Vin_min = 5.0 # Input supply voltage Vout = 2.5 # ADR525 output voltage I_load_max = 0.001 # 1mA max load I_shunt_min = 0.00005 # 50uA min operating current Rs = (Vin_min - Vout) / (I_load_max + I_shunt_min) print(f"Required Resistor: {Rs:.2f} Ohms") ```