The **AD8210WYRZ-R7** is a high-performance, high-voltage, bidirectional current shunt amplifier manufactured by Analog Devices. It is specifically designed to amplify small differential voltages in the presence of large common-mode voltages. --- ### ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Analog Devices | | **Common-Mode Voltage Range** | -2 V to +65 V | | **Supply Voltage** | 4.5 V to 5.5 V | | **Gain** | Fixed at 20 V/V | | **Bandwidth** | 450 kHz | | **CMRR (Common-Mode Rejection)** | 120 dB (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | SOIC-8 (R-8) | | **Qualification** | AEC-Q100 (Automotive Grade) | --- ### ### Key Functional Features 1. **Bidirectional Current Sensing:** The device can measure current flowing in both directions through a shunt resistor. It uses an internal offset (VREF) to shift the output voltage, allowing it to represent both positive and negative currents. 2. **High Common-Mode Rejection:** Even if the voltage at the sensor pins is as high as 65V, the amplifier can accurately extract the tiny millivolt signal across the shunt resistor. 3. **Automotive Grade (W-Suffix):** The "WY" in the part number indicates it is qualified for automotive applications, ensuring reliability under extreme temperatures and vibrations. 4. **Integrated Precision:** The internal resistors are laser-trimmed, resulting in a low gain drift (< 20 ppm/°C) and high accuracy without needing external components. --- ### ### Pin Configuration (SOIC-8) | Pin # | Pin Name | Description | | :--- | :--- | :--- | | 1 | -IN | Inverting Input (Connected to Shunt) | | 2 | GND | Ground | | 3 | VREF2 | Reference Input 2 (Sets Output Offset) | | 4 | NC | No Connection | | 5 | OUT | Output Voltage | | 6 | V+ | Supply Voltage (5V Typical) | | 7 | VREF1 | Reference Input 1 (Sets Output Offset) | | 8 | +IN | Non-Inverting Input (Connected to Shunt) | --- ### ### Typical Application Circuit The AD8210 is commonly used for motor control, solenoid control, and battery management systems. ```c // Calculation for Output Voltage (Vout) // Vout = (Vdiff * Gain) + Vref // Where: // Vdiff = Voltage across shunt resistor // Gain = 20 // Vref = Offset voltage (set via Pin 3 and Pin 7) ``` ---