The **AD8663ACPZ-R2** is a high-precision, low-noise CMOS operational amplifier (Op-Amp) manufactured by Analog Devices. It is specifically designed for applications requiring low power consumption and high accuracy, such as battery-powered medical instrumentation and sensors. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the AD8663: | Parameter | Specification | | :--- | :--- | | **Architecture** | CMOS, Rail-to-Rail Output | | **Supply Voltage (Single)** | 5.0 V to 16 V | | **Supply Voltage (Dual)** | ±2.5 V to ±8.0 V | | **Supply Current** | 230 µA per amplifier (Typical) | | **Offset Voltage (Max)** | 1.0 mV | | **Input Bias Current** | 1 pA (Typical) | | **Bandwidth** | 540 kHz | | **Package Type** | LFCSP-8 (Lead Frame Chip Scale Package) | --- ### 2. Core Features * **Rail-to-Rail Output:** The output voltage can swing almost to the supply rails, maximizing dynamic range, which is critical in low-voltage systems. * **Low Input Bias Current:** Because it uses a CMOS input stage, the bias current is extremely low (pico-ampere range), making it ideal for photodiode preamps or high-impedance sensors. * **Wide Supply Range:** Unlike many CMOS op-amps limited to 5V, the AD8663 can operate up to 16V, allowing it to interface with industrial sensors. * **Low Power:** With a quiescent current of only 230 µA, it is highly efficient for portable devices. --- ### 3. Pin Configuration (LFCSP-8) The "ACPZ" in the part number refers to the 8-lead LFCSP package. While pinouts can vary slightly based on specific circuit needs, the standard configuration follows: | Pin Number | Function | Description | | :--- | :--- | :--- | | 1 | NC | No Connect | | 2 | –IN | Inverting Input | | 3 | +IN | Non-inverting Input | | 4 | V– / GND | Negative Power Supply or Ground | | 5 | NC | No Connect | | 6 | OUT | Amplifier Output | | 7 | V+ | Positive Power Supply | | 8 | NC | No Connect | --- ### 4. Part Number Breakdown The suffix **AD8663ACPZ-R2** provides specific manufacturing information: * **AD8663:** The base model number. * **A:** Performance grade. * **CP:** Indicates the LFCSP (Lead Frame Chip Scale Package). * **Z:** RoHS compliant (Lead-free). * **R2:** Packaging format (7-inch reel containing 250 units). --- ### 5. Common Applications * **Sensor Interfaces:** Transducer amplifiers and strain gages. * **Medical Equipment:** Portable ECGs and pulse oximeters. * **Battery Monitoring:** Precision current sensing in power management systems. * **Photodiode Amplifiers:** Due to the ultra-low input bias current. ---