The **ADR3550WBRMZ-R7** is a high-precision, low-power, CMOS voltage reference manufactured by Analog Devices (ADI). It is specifically designed for high-accuracy applications in demanding environments, such as automotive and industrial systems. --- ### ## Technical Specifications Overview The following table highlights the primary electrical characteristics of the ADR3550WBRMZ-R7: | Parameter | Specification | | :--- | :--- | | **Output Voltage ($V_{out}$)** | 5.0 V | | **Initial Accuracy** | ±0.1% (Max) | | **Temperature Coefficient** | 8 ppm/°C | | **Supply Voltage Range** | 5.1 V to 5.5 V | | **Quiescent Current** | 100 µA (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | 8-Lead MSOP (Micro Small Outline Package) | | **Automotive Qualified** | Yes (AEC-Q100) | --- ### ## Key Features and Component Breakdown #### 1. High Precision and Stability The "50" in the part number signifies the **5.0V output**. With a low temperature coefficient (8 ppm/°C), the device ensures that the output voltage remains stable despite fluctuations in the ambient temperature. #### 2. Low Power Consumption Operating at a maximum quiescent current of **100 µA**, this part is ideal for battery-operated equipment and precision data acquisition systems where power efficiency is critical. #### 3. Low Noise Performance The ADR3550 belongs to a family known for low-frequency noise (0.1 Hz to 10 Hz), typically around **30 µV p-p**. This is essential for maintaining the resolution of high-bit Analog-to-Digital Converters (ADCs). #### 4. Automotive Grade (WBRMZ) The "W" in the suffix indicates that the part is **Automotive Grade**. It is AEC-Q100 qualified, meaning it has passed rigorous stress tests for reliability in automotive subsystems like powertrain control or sensor interfaces. --- ### ## Pin Configuration (8-Lead MSOP) While the package has 8 pins, several are often designated for specific functions or left unconnected: * **VIN:** Input Supply Voltage. * **VOUT:** Reference Voltage Output. * **GND:** Ground. * **NC:** No Internal Connection (often used for routing or stability). --- ### ## Typical Applications * **Automotive Systems:** Battery Management Systems (BMS) and Electric Power Steering. * **Data Acquisition:** Providing a stable reference for 12-bit to 16-bit ADCs. * **Instrumentation:** Precision handheld measurement tools. * **Process Control:** Industrial 4-20mA loops and PLC modules. ---