## ADA4084-2ACPZ-R7: Technical Overview The **ADA4084-2ACPZ-R7** is a high-performance, dual-channel, low-noise operational amplifier (Op-Amp) manufactured by Analog Devices. It is designed for precision applications requiring rail-to-rail input and output capabilities. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Number of Channels** | Dual (2) | | **Supply Voltage (Single)** | 3 V to 30 V | | **Supply Voltage (Dual)** | ±1.5 V to ±15 V | | **Gain Bandwidth Product** | 15.9 MHz | | **Slew Rate** | 4.6 V/µs | | **Low Noise** | 3.9 nV/√Hz @ 1 kHz | | **Input Offset Voltage** | 100 µV (max) | | **Output Type** | Rail-to-Rail | | **Package / Case** | LFCSP-8 (3x3 mm) | --- ### 2. Functional Characteristics * **Rail-to-Rail I/O:** This allows the amplifier to handle signals that swing all the way to the positive and negative supply rails, maximizing dynamic range in low-voltage systems. * **High Precision:** The combination of low offset voltage and low input bias current makes it ideal for DC-precision circuits. * **Low Noise and Distortion:** Suitable for high-quality audio pre-amplification and sensor signal conditioning where signal integrity is critical. * **Wide Supply Range:** Its ability to operate up to 30V (or ±15V) makes it versatile for both battery-powered portable devices and industrial-grade equipment. --- ### 3. Pin Configuration (LFCSP-8) While the physical pins are located on the bottom of the lead-frame chip scale package (LFCSP), the standard dual Op-Amp layout is as follows: | Pin Number | Symbol | Description | | :--- | :--- | :--- | | 1 | OUT A | Output, Channel A | | 2 | -IN A | Inverting Input, Channel A | | 3 | +IN A | Non-inverting Input, Channel A | | 4 | V- | Negative Supply | | 5 | +IN B | Non-inverting Input, Channel B | | 6 | -IN B | Inverting Input, Channel B | | 7 | OUT B | Output, Channel B | | 8 | V+ | Positive Supply | --- ### 4. Common Applications * **Precision Filters:** Used in active filter designs due to high bandwidth and low noise. * **Sensor Interfaces:** Amplifying small signals from thermocouples, RTDs, and strain gauges. * **Photodiode Amplifiers:** High impedance and low noise are perfect for transimpedance amplification. * **Battery Monitoring:** Low power consumption relative to its performance makes it suitable for portable power management. --- ### 5. Part Number Breakdown * **ADA4084-2:** The base model (Dual version). * **ACPZ:** Indicates the package type (LFCSP) and RoHS compliance (Lead-free). * **R7:** Specifies the tape and reel packaging (usually 7-inch reel).