The **ADR3425ARJZ-R2** is a high-precision, low-power, low-noise CMOS voltage reference. Manufactured by Analog Devices, it is part of the ADR34xx family, specifically designed for applications requiring high accuracy and stability in a compact form factor. --- ### 1. Key Technical Specifications | Parameter | Specification | |:--- |:--- | | **Output Voltage ($V_{out}$)** | 2.5 V | | **Initial Accuracy** | ±0.1% (Max) | | **Temperature Coefficient** | 8 ppm/°C (Max) | | **Operating Supply Range** | 2.7 V to 5.5 V | | **Quiescent Current** | 100 µA (Max) | | **Output Current Drive** | ±10 mA | | **Package Type** | SOT-23-6 (indicated by the 'RJ' suffix) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Functional Features * **High Precision:** The 0.1% initial accuracy ensures that the 2.5V output is highly reliable for ADC (Analog-to-Digital Converter) references. * **Low Power Consumption:** With a maximum current of 100 µA, it is ideal for battery-operated handheld devices. * **Low Noise:** It provides a clean signal, which is critical for maintaining high resolution in sensor-based circuits. * **No External Capacitor Required:** It is stable without a large output capacitor, though one can be added to improve transient response. --- ### 3. Pin Configuration (SOT-23-6) While specific pinouts should be verified via the official datasheet, the typical configuration for the ADR34xx series is: | Pin Number | Name | Description | |:--- |:--- |:--- | | 1 | **NC** | No internal connection | | 2 | **GND** | Ground | | 3 | **NC** | No internal connection | | 4 | **Vout** | Output Voltage (2.5V) | | 5 | **NC** | No internal connection | | 6 | **Vin** | Input Voltage Supply | --- ### 4. Applications 1. **Precision Data Acquisition:** Providing the reference voltage for 12-bit to 16-bit ADCs and DACs. 2. **Industrial Instrumentation:** Used in process control systems and smart transmitters. 3. **Portable Devices:** Due to the low power draw and small SOT-23 footprint. 4. **Medical Equipment:** Suitable for patient monitoring systems requiring stable analog signals. --- ### 5. Ordering Code Breakdown: ADR3425ARJZ-R2 * **ADR3425:** The model series (25 indicates 2.5V output). * **A:** Performance grade (Initial accuracy/Temp drift). * **RJ:** Package designator (SOT-23). * **Z:** RoHS compliant/Lead-free. * **R2:** Reel size/Quantity (typically a 250-piece reel).