The **ADR5044ARTZ-R2** is a precision shunt voltage reference manufactured by Analog Devices. It is designed for space-constrained applications requiring high accuracy and low power consumption. --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Output Voltage ($V_{out}$)** | 4.096 V | | **Initial Accuracy** | ±0.1% (Grade A) | | **Temperature Coefficient** | 100 ppm/°C | | **Operating Current Range** | 60 µA to 15 mA | | **Package Type** | SOT-23-3 | | **Operating Temperature** | -40°C to +125°C | | **Output Noise** | 240 µV p-p (0.1 Hz to 10 Hz) | --- ### 2. Functional Characteristics * **Shunt Topology:** Unlike series regulators, this device operates like a Zener diode. It maintains a constant voltage across its terminals by varying the amount of current it shunts to ground. * **No Output Capacitor Required:** This device is stable without an external output capacitor, which saves board space and reduces BOM (Bill of Materials) costs. * **High Capability:** It can handle up to 15 mA of surge current, providing robustness against supply fluctuations. --- ### 3. Pin Configuration (SOT-23-3) | Pin Number | Name | Function | |:---:|:---:|:---| | 1 | **$V_{out}$** | Positive Output / Cathode Connection | | 2 | **NC** | No Connect (Internally not connected) | | 3 | **GND** | Ground / Anode Connection | --- ### 4. Typical Application Circuit To use the ADR5044, an external resistor ($R_{set}$) is required to limit the current flowing into the device. ```text Input Voltage (Vin) | [R_set] | +-------+------> Output Voltage (4.096V) | | [ADR5044] [Load] | | GND GND ``` --- ### 5. Common Use Cases 1. **Precision Data Converters:** Providing a stable reference for 12-bit or 14-bit ADCs/DACs. 2. **Portable Instrumentation:** Due to the low minimum operating current (60 µA). 3. **Industrial Process Control:** Used in 4-20 mA loop-powered systems. 4. **Power Supplies:** Serving as a reference for switching regulators or linear supplies.