## Overview of AD822TRZ-EP-R7 The **AD822TRZ-EP-R7** is an Enhanced Product (EP) version of the popular AD822, which is a dual, precision, low-power, FET-input operational amplifier. This specific variant is designed for high-reliability applications, featuring extended temperature ranges and rigorous testing standards. --- ### Key Technical Specifications | Parameter | Value / Description | | :--- | :--- | | **Amplifier Type** | Dual JFET-Input Operational Amplifier | | **Supply Voltage Range** | Single: 5V to 30V / Dual: ±2.5V to ±15V | | **Input Bias Current** | 25 pA (Typical) | | **Slew Rate** | 3 V/µs | | **Bandwidth** | 1.9 MHz | | **Package Type** | 8-Lead SOIC (Small Outline Integrated Circuit) | | **Temperature Range** | -55°C to +125°C (Military/Aerospace Grade) | --- ### Core Features 1. **Rail-to-Rail Output:** Unlike standard op-amps, the AD822 can swing its output voltage very close to both the positive and negative supply rails, maximizing dynamic range. 2. **JFET Input Stage:** Provides extremely high input impedance and ultra-low input bias current, making it ideal for interfacing with high-impedance sensors. 3. **Enhanced Product (EP):** The "-EP" suffix indicates this part supports: * Controlled manufacturing baseline. * One assembly/test site. * Enhanced change notification. * Qualification data available upon request. 4. **Low Power Consumption:** Operates with a low quiescent current of approximately 800 µA per amplifier. --- ### Typical Applications * **Aerospace & Defense:** Due to the extended temperature range and reliability. * **Medical Instrumentation:** Low bias current is perfect for photodiode preamps or ECG equipment. * **Battery Powered Tools:** Low power consumption extends battery life. * **Precision Filters:** High input impedance prevents loading on previous stages. --- ### Pin Configuration (8-Lead SOIC) ```text 1: OUTPUT A 8: V+ (Positive Supply) 2: -INPUT A 7: OUTPUT B 3: +INPUT A 6: -INPUT B 4: V- (Negative) 5: +INPUT B ``` ---