The **ADA4075-2ACPZ-R7** is a high-performance, dual-channel, ultra-low noise operational amplifier (op-amp) manufactured by Analog Devices. It is specifically engineered for high-fidelity audio applications and precision instrumentation where signal integrity is critical. --- ### 1. Key Technical Specifications The following table highlights the core electrical characteristics of the ADA4075-2: | Feature | Specification | | :--- | :--- | | **Number of Channels** | 2 (Dual) | | **Voltage Noise Density** | 2.8 nV/√Hz @ 1 kHz | | **Total Harmonic Distortion (THD+N)** | 0.0002% (typical) | | **Gain Bandwidth Product** | 6.5 MHz | | **Slew Rate** | 12 V/µs | | **Supply Voltage Range** | ±4.5 V to ±18 V | | **Input Offset Voltage** | 150 µV (max) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Characteristics and Packaging The suffix **"ACPZ-R7"** provides specific information regarding the physical format and delivery: * **Package Type:** LFCSP (Lead Frame Chip Scale Package). * **Pin Count:** 8-lead. * **Dimensions:** Approximately 3mm x 3mm (very small footprint). * **Mounting Type:** Surface Mount (SMD/SMT). * **R7 Packaging:** Indicates a 7-inch reel containing 1,500 units for automated assembly. --- ### 3. Core Functional Advantages 1. **Audio Excellence:** With a THD+N of 0.0002%, this part is ideal for high-end preamplifiers and professional audio mixing consoles where "colorless" amplification is required. 2. **Low Power/High Performance:** It balances a relatively low quiescent current (approx. 1.8 mA per amplifier) with high speed and low noise. 3. **Precision Accuracy:** The low offset voltage and high common-mode rejection ratio (CMRR) make it suitable for precision sensor interfaces, not just audio. --- ### 4. Typical Applications * **Professional Audio:** Line stages, microphones preamps, and active filters. * **Precision Data Acquisition:** Driving high-resolution Analog-to-Digital Converters (ADCs). * **Medical Instrumentation:** Low-noise signal conditioning for patient monitoring. * **Sensor Interfaces:** Amplifying small signals from strain gauges or thermopiles. --- ### 5. Pin Configuration (Internal) ```text ADA4075-2 (LFCSP) +---------------------+ OUT A | 1 8 | V+ -IN A | 2 (PAD) 7 | OUT B +IN A | 3 6 | -IN B V- | 4 5 | +IN B +---------------------+ (Note: Exposed Pad should be connected to V-) ```