The **AD8065ARTZ-R2** is a high-performance, high-speed FET input operational amplifier (op-amp) manufactured by Analog Devices. It is part of the *FastFET™* family, known for combining high speed with low input bias current. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the AD8065: | Parameter | Specification | | :--- | :--- | | **Input Type** | FET Input (FastFET™) | | **Bandwidth (-3 dB)** | 145 MHz | | **Slew Rate** | 180 V/µs | | **Supply Voltage Range** | 5 V to 24 V (Single) / ±2.5 V to ±12 V (Dual) | | **Input Bias Current** | 1 pA (typical) | | **Output Current** | 30 mA | | **Settling Time** | 55 ns to 0.1% | | **Package Type** | SOT-23-5 (ARTZ designation) | --- ### 2. Physical Part Breakdown (Nomenclature) The part number **AD8065ARTZ-R2** can be broken down to understand its physical and shipping specifications: * **AD8065**: The base model number (Single Op-Amp). * **A**: Performance grade. * **RT**: Indicates the package style (SOT-23-5). * **Z**: Denotes RoHS compliance (Lead-free). * **R2**: Indicates the packaging format (7-inch reel containing 250 units). --- ### 3. Core Features and Advantages * **High Input Impedance:** Because it uses FET (Field-Effect Transistor) inputs, it has an extremely low input bias current (1 pA), making it ideal for photodiode preamps or sensors with high output impedance. * **Wide Supply Range:** Unlike many high-speed op-amps that are limited to 5V, the AD8065 can handle up to 24V total, allowing for greater dynamic range. * **Low Noise:** It offers low voltage noise (7 nV/√Hz) and low current noise (0.6 fA/√Hz), ensuring signal integrity in precision applications. --- ### 4. Common Applications Due to its high speed and FET inputs, this component is frequently used in: 1. **Photodiode Amplifiers:** Converting light signals to voltage with minimal error. 2. **ADC Drivers:** Buffering signals for high-speed Analog-to-Digital Converters. 3. **Active Filters:** Designing high-frequency filters with high Q-factors. 4. **Instrumentation:** High-impedance buffering for precision measurement tools. --- ### 5. Typical Application Circuit ```python # Conceptual Pinout for SOT-23-5 Package Pin 1: V_OUT (Output signal) Pin 2: V- (Negative supply / Ground) Pin 3: +IN (Non-inverting input) Pin 4: -IN (Inverting input) Pin 5: V+ (Positive supply) ```