## Technical Overview: ADR130BUJZ-R2 The **ADR130BUJZ-R2** is a precision, low-power, low-dropout voltage reference manufactured by **Analog Devices**. It belongs to the ADR130 family, specifically designed for high-accuracy applications where space and power consumption are critical. --- ### 1. Key Technical Specifications | Parameter | Value / Specification | | :--- | :--- | | **Output Voltage ($V_{out}$)** | 1.0 V | | **Initial Accuracy** | ±1.0 mV (0.1%) | | **Temperature Coefficient** | 25 ppm/°C | | **Input Voltage Range** | 2.0 V to 18 V | | **Quiescent Current** | 120 µA (max) | | **Output Current Drive** | 4 mA | | **Package Type** | TSOT-23-6 (6-lead) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Functional Features * **Low Dropout Voltage:** It can maintain a stable output even when the input voltage is only slightly higher than the output voltage. * **No Output Capacitor Required:** Unlike many other references, the ADR130 is stable without an external output capacitor, reducing board space (though one can be added for noise reduction). * **Shutdown Mode:** It features a SHDN pin that allows the device to be powered down to less than 3 µA, making it ideal for battery-operated devices. * **Low Noise:** Provides a clean voltage signal suitable for high-resolution Data Converters (ADC/DAC). --- ### 3. Pin Configuration The device typically utilizes a 6-lead TSOT-23 package with the following functional pins: | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | **DNC** | Do Not Connect | | 2 | **GND** | Ground | | 3 | **SHDN** | Shutdown (Active Low) | | 4 | **$V_{in}$** | Input Voltage | | 5 | **DNC** | Do Not Connect | | 6 | **$V_{out}$** | Reference Output Voltage | --- ### 4. Typical Applications * **Precision Data Acquisition:** Providing the reference voltage for 12-bit or 16-bit ADCs. * **Battery Powered Equipment:** Due to its low quiescent current and shutdown feature. * **Industrial Process Control:** Used in sensors and transmitters. * **Portable Medical Instruments:** Where small form factor and accuracy are paramount. --- ### 5. Part Number Breakdown The suffix `BUJZ-R2` provides specific ordering information: * **B**: Denotes the grade (Accuracy/Tempco). * **UJ**: Refers to the TSOT package. * **Z**: Lead-free/RoHS compliant. * **R2**: Indicates the tape and reel size (typically a 7-inch reel with 250 units).