The **ADA4091-2ARZ-R7** is a high-precision, dual-channel operational amplifier manufactured by Analog Devices. It is specifically designed for applications requiring robustness, low power consumption, and high accuracy in industrial environments. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the device: | Parameter | Specification | | :--- | :--- | | **Number of Channels** | 2 (Dual Op-Amp) | | **Supply Voltage Range** | 3V to 36V (Single); ±1.5V to ±18V (Dual) | | **Supply Current** | 250 µA per amplifier (typical) | | **Gain Bandwidth Product** | 1.27 MHz | | **Input Offset Voltage** | 350 µV (maximum) | | **Slew Rate** | 0.46 V/µs | | **Output Type** | Rail-to-Rail | | **Package Type** | SOIC-8 (N-8) | --- ### 2. Notable Features * **Overvoltage Protection (OVP):** One of the standout features is its input overvoltage protection. The inputs can withstand voltages up to 12V beyond the power supply rails without damaging the part or causing phase reversal. * **Micropower Operation:** It consumes very little current, making it ideal for battery-powered or portable instruments. * **Rail-to-Rail Output:** This allows the output signal to swing very close to the supply rails, maximizing the dynamic range. * **High Precision:** Low offset voltage and low drift make it suitable for sensing small signals accurately over time and temperature. --- ### 3. Pin Configuration (SOIC-8) The device follows the industry-standard pinout for dual operational amplifiers: | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | OUT A | Output of channel A | | 2 | -IN A | Inverting input of channel A | | 3 | +IN A | Non-inverting input of channel A | | 4 | V- | Negative supply voltage | | 5 | +IN B | Non-inverting input of channel B | | 6 | -IN B | Inverting input of channel B | | 7 | OUT B | Output of channel B | | 8 | V+ | Positive supply voltage | --- ### 4. Applications The ADA4091-2 is commonly used in: * **Industrial Process Control:** Monitoring sensors in environments where electrical surges might occur. * **Battery Monitoring:** Low current draw extends battery life in remote sensors. * **Precision Filters:** Used in signal conditioning for data acquisition systems. * **Power Supply Control Loops:** Providing stable feedback for voltage regulators. --- ### 5. Part Number Breakdown `ADA4091-2ARZ-R7` * **ADA4091-2:** The base model name (Dual Op-Amp). * **A:** Performance grade. * **R:** Package type (SOIC). * **Z:** RoHS compliant (Lead-free). * **R7:** 7-inch reel packaging (standard for automated assembly).