The **ADP7104ACPZ-9.0-R7** is a high-performance, CMOS low dropout (LDO) linear regulator manufactured by Analog Devices. It is designed to provide a stable, low-noise power supply for high-performance analog and mixed-signal circuits. --- ### ## Technical Specifications The following table outlines the primary electrical characteristics of the device: | Parameter | Specification | | :--- | :--- | | **Output Voltage (Fixed)** | 9.0 V | | **Input Voltage Range** | 3.3 V to 20 V | | **Maximum Output Current** | 500 mA | | **Dropout Voltage** | 200 mV (typical at 500 mA) | | **PSRR (Power Supply Rejection Ratio)** | 60 dB at 10 kHz | | **Output Noise** | 15 µV rms (10 Hz to 100 kHz) | | **Package Type** | 8-lead LFCSP (3mm x 3mm) | | **Operating Temperature** | -40°C to +125°C | --- ### ### Key Features and Components 1. **Low Noise Performance:** With only 15 µV rms noise, it is ideal for powering sensitive components like Analog-to-Digital Converters (ADCs), Digital-to-Analog Converters (DACs), and precision amplifiers. 2. **Wide Input Range:** The ability to handle up to 20V makes it versatile for industrial applications and systems with varying battery voltages. 3. **Soft Start Capability:** The device includes an internal soft-start mechanism to limit inrush current during startup, protecting the rest of the circuit. 4. **Precision Enable:** It features a precision enable input with a logic threshold, allowing for controlled sequencing of power rails. 5. **Protection Circuitry:** * **Current-Limit Protection:** Prevents damage during short-circuit conditions. * **Thermal Shutdown (TSD):** Automatically shuts down the part if the junction temperature exceeds safety limits. --- ### ### Application Circuit Layout To ensure stability, the ADP7104 requires high-quality ceramic capacitors. A typical implementation involves: ```c // Example Component Selection for Stability Input_Capacitor = 1.0uF (X5R or X7R Dielectric); Output_Capacitor = 1.0uF (Low ESR, essential for stability); ``` ### ### Part Number Breakdown (ADP7104ACPZ-9.0-R7) * **ADP7104**: Model series (500 mA LDO). * **ACPZ**: Package code (LFCSP - Lead Frame Chip Scale Package, RoHS compliant). * **9.0**: Fixed output voltage of 9.0 Volts. * **R7**: Packaging type (7-inch reel containing 3,000 units).