### AD8215WYRZ-R7: Electronic Component Overview The **AD8215WYRZ-R7** is a high-voltage, precision current shunt amplifier manufactured by Analog Devices. It is specifically designed to amplify small differential voltages in the presence of high common-mode voltages. --- ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Component Type** | Current Sense Amplifier | | **Common-Mode Voltage** | -2V to +65V (Continuous) | | **Supply Voltage (Vcc)** | 4.5V to 5.5V | | **Fixed Gain** | 20 V/V | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 8-SOIC (Small Outline Integrated Circuit) | | **Automotive Grade** | AEC-Q100 Qualified | | **Bandwidth** | 450 kHz | --- ### Key Features and Internal Architecture 1. **High Common-Mode Rejection:** The device can monitor current on a high-voltage rail (up to 65V) while being powered by a standard 5V supply. 2. **AEC-Q100 Qualification:** The "W" in the part number signifies its automotive grade, making it suitable for harsh environments like engine control units or battery management systems. 3. **Integrated Precision Resistors:** The internal gain is set to a fixed 20 V/V using high-precision trimmed resistors, ensuring low gain drift over temperature. 4. **Zero-Drift Core:** It utilizes a specialized architecture to minimize input offset voltage (typically 150 μV) and offset drift. --- ### Typical Application Circuit The AD8215 is typically used with an external shunt resistor ($R_{shunt}$). ```python # Simplified Gain Calculation # Output Voltage = (Current * R_shunt) * Gain current = 10.0 # Amps r_shunt = 0.005 # 5 milliOhms gain = 20 # Fixed for AD8215 v_out = (current * r_shunt) * gain # v_out = 0.05V * 20 = 1.0V ``` --- ### Pin Configuration (8-SOIC) * **Pin 1 (-IN):** Inverting Input. * **Pin 2 (GND):** Ground. * **Pin 3 (REF):** Reference Input (defines the output zero-current level). * **Pin 4 (NC):** No Connection. * **Pin 5 (OUT):** Output Voltage. * **Pin 6 (Vcc):** Supply Power (5V). * **Pin 7 (NC):** No Connection. * **Pin 8 (+IN):** Non-Inverting Input. --- ### Comparison with Similar Parts | Part Number | Gain | Max Common-Mode | Automotive Grade | | :--- | :--- | :--- | :--- | | **AD8215** | 20V/V | 65V | Yes | | **AD8210** | 20V/V | 65V | Yes (Bidirectional) | | **AD8211** | 20V/V | 65V | Yes (Smaller SOT-23) | ---